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4, 8 MEG x 32 DRAM SIMMs (OBSOLETE)

DRAM MODULE

MT8D432(X)
MT16D832(X)

For the latest data sheet revisions, please refer to the Micron Web site: www.micron.com/mti/msp/html/datasheet.html

FEATURES

  • JEDEC- and industry-standard pinout in a 72-pin, single in-line memory module (SIMM)
  • 16MB (4 Meg x 32) and 32MB (8 Meg x 32)
  • High-performance CMOS silicon-gate process
  • Single 5V 10% power supply
  • All inputs, outputs and clocks are TTL-compatible
  • Refresh modes: RAS#-ONLY, CAS#-BEFORE-RAS# (CBR) and HIDDEN
  • 2,048-cycle refresh distributed across 32ms
  • FAST PAGE MODE (FPM) access or Extended Data-Out (EDO) PAGE MODE access

OPTIONS

OPTIONSMARKING
Timing 
50ns access-5*
60ns access-6
  
Packages 
72-pin SIMMM
72-pin SIMM (Gold)G
  
Operating Modes 
FAST PAGE MODENone
EDO PAGE MODEX
  
*EDO version only 

PART NUMBERS

EDO Operating Mode

PART NUMBER CONFIGURATION PLATING
MT8D432G- x X 4 Meg x 32 Gold
MT8D432M- x X 4 Meg x 32 Tin/Lead
MT16D832G-x X 8 Meg x 32 Gold
MT16D832M-x X 8 Meg x 32 Tin/Lead
x = speed

FPM Operating Mode

PART NUMBERCONFIGURATIONPLATING
MT8D432G-x4 Meg x 32Gold
MT8D432M-x4 Meg x 32Tin/Lead
MT16D832G-x8 Meg x 32Gold
MT16D832M-x8 Meg x 32Tin/Lead
x = speed

PIN ASSIGNMENT (Front View)

72-Pin SIMM

4 Meg x 32
8 Meg x 32

PINSYMBOLPIN SYMBOLPINSYMBOLPINSYMBOL
1Vss19A1037NC55DQ12
2DQ120DQ538NC56DQ28
3DQ1721DQ2139Vss57DQ13
4DQ222DQ640CAS0#58DQ29
5DQ1823DQ2241CAS2#59Vdd
6DQ324DQ742CAS3#60DQ30
7DQ1925DQ2343CAS1#61DQ14
8DQ426DQ844RAS0#62DQ31
9DQ2027DQ2445NC/RAS1#*63DQ15
10VDD28A746NC64DQ32
11NC29NC (A11)47WE#65DQ16
12A030VDD48NC66NC
13A131A849DQ967PRD1
14A232A950DQ2568PRD2
15A333NC/RAS3#*51DQ1069PRD3
16A434RAS2#52DQ2670PRD4
17A535NC53DQ1171NC
18A636NC54DQ2772Vss
*32MB version only

NOTE: Symbols in parentheses are not used on these modules but may be used for other modules in this product family. They are for reference only.

KEY TIMING PARAMETERS

EDO Operating Mode

    SPEED          tRC               tRAC            tPC             tAA            tCAC             tCAS
       -5         84ns            50ns               20ns          25ns            13ns             8ns
       -6        104ns            60ns               25ns          30ns            15ns             10ns

FPM Operating Mode

    SPEED          tRC               tRAC            tPC             tAA            tCAC             tRP
       -6        110ns            60ns               35ns          30ns            15ns             40ns

GENERAL DESCRIPTION

The MT8D432(X) and MT16D832(X) are randomly ac cessed, 16MB and 32MB solid-state memories organized in a x32 configuration. During READ or WRITE cycles, each bit is uniquely addressed through 22 address bits that are entered 11 bits (A0-A10) at a time. RAS# is used to latch the first 11 bits and CAS# the latter 11 bits. READ and WRITE cycles are selected with the WE# input. A logic HIGH on WE# dictates read mode, while a logic LOW on WE# dictates write mode. During a WRITE cycle, data-in (D) is latched by the falling edge of CAS#. Since WE# goes LOW prior to CAS# going LOW, the output pin(s) remain open (High-Z) until the next CAS# cycle.

FAST PAGE MODE

FAST-PAGE-MODE operations allow faster data operations (READ or WRITE) within a row-address- defined page boundary. The FAST-PAGE-MODE cycle is always initiated with a row address strobed in by RAS#, followed by a column address strobed in by CAS#. Additional columns may be accessed by providing valid column addresses, strobing CAS# and holding RAS# LOW, thus executing faster memory cycles. Returning RAS# HIGH terminates the FAST-PAGE-MODE operation.

EDO PAGE MODE

EDO PAGE MODE, designated by the "X" version, is an accelerated FAST-PAGE-MODE cycle. The primary advantage of EDO is the availability of data-out even after CAS# goes back HIGH. EDO provides for CAS# precharge time (tCP) to occur without the output data going invalid. This elimination of CAS# output control provides for pipelined READs.

FAST-PAGE-MODE modules have traditionally turned the output buffers off (High-Z) with the rising edge of CAS#. EDO operates like FAST-PAGE-MODE READs, ex- cept data will be held valid or become valid after CAS# goes HIGH, as long as RAS# and OE# are held LOW. (Refer to the MT4C4M4E8 DRAM data sheet for additional information on EDO functionality.)

REFRESH

Returning RAS# and CAS# HIGH terminates a memory cycle and decreases chip current to a reduced standby level. Also, the chip is preconditioned for the next cycle during the RAS# HIGH time. Memory cell data is retained in its correct state by maintaining power and executing any RAS# cycle (READ, WRITE) or RAS# REFRESH cycle (RAS#- ONLY, CBR or HIDDEN) so that all 2,048 combinations of RAS# addresses are executed at least every 32ms, regard- less of sequence. The CBR REFRESH cycle will invoke the refresh counter for automatic RAS# addressing. terminates the FAST-PAGE-MODE operation.

x16 CONFIGURATION

For x16 applications, the corresponding DQ and CAS# pins must be connected together (DQ1 to DQ17, DQ2 to DQ18 and so forth, and CAS0# to CAS2# and CAS1# to CAS3#). Each RAS# is then a bank select for the x16 memory organization.

JEDEC-DEFINED                                     
PRESENCE-DETECT                                
MT8D432(X) (16MB)                                
   SYMBOL                   PIN    -5*    -6   
   PRD1                     67     VSS    VSS 
   PRD2                     68     NC     NC 
   PRD3                     69     VSS    NC
   PRD4                     70     VSS    NC


JEDEC-DEFINED
PRESENCE-DETECT 
MT16D832(X) (32MB)
 SYMBOL               PIN              -5*                -6
 PRD1                  67              NC               NC
 PRD2                  68              VSS              VSS
 PRD3                  69              VSS              NC
 PRD4                  70              VSS              NC

*EDO version only

FUNCTIONAL BLOCK DIAGRAM, MT8D432(X) (16MB)

FUNCTIONAL BLOCK DIAGRAM, MT16D832(X) (32MB)

ABSOLUTE MAXIMUM RATINGS*

Voltage on Any Pin Relative to VSS .................. -1V to +7V
Operating Temperature, TA (ambient) ............... 0C to +70C
Storage Temperature (plastic)................... -55C to +125C
Power Dissipation ........................................... 8W
Short Circuit Output Current .............................. 50mA
*Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.

DC ELECTRICAL CHARACTERISTICS AND OPERATING CONDITIONS

(Notes: 1) (VDD = +5V 10%)

PARAMETER/CONDITION                                      SYMBOL    MIN     MAX      UNITS        NOTES

SUPPLY VOLTAGE                                            VDD      4.5     5.5           V
INPUT HIGH VOLTAGE: Logic 1; All inputs                   VIH      2.4   VDD + 1         V
INPUT LOW VOLTAGE: Logic 0; All inputs                    VIL     -1.0     0.8           V
INPUT LEAKAGE CURRENT:                    RAS0#-RAS3#     II1       -8       8          A
Any input 0V   VIN   5.5V                 A0-A10, WE#     II2      -32      32          A         23
(All other pins not under test = 0V)      CAS0#-CAS3#     II3       -8       8          A         23
OUTPUT LEAKAGE CURRENT:                      DQ1-DQ32     IOZ      -10      10          A         23
(DQ is disabled; 0V   VOUT   5.5V)
OUTPUT LEVELS:                                            VOH      2.4                  V
Output High Voltage (IOUT = -5mA)
Output Low Voltage (IOUT = 4.2mA)                         VOL             0.4           V

ICC SPECIFICATIONS AND CONDITIONS

(Notes: 1, 5, 6) (VDD = +5V 10%)

                                                                                                MAX
PARAMETER/CONDITION                                          SYMBOL         SIZE           -5*       -6      UNITS    NOTES
STANDBY CURRENT: FAST PAGE MODE (TTL)                          ICC1         16MB                    16        mA
(RAS# = CAS# = VIH)                                                         32MB                    32
STANDBY CURRENT: EDO PAGE MODE (TTL)                           ICC2         16MB             8        8        mA
(RAS# = CAS# = VIH)                                                         32MB            16       16
STANDBY CURRENT: (CMOS)                                        ICC3         16MB             4        4        mA
(RAS# = CAS# = other inputs = VDD - 0.2V)                                   32MB             8        8
OPERATING CURRENT: Random READ/WRITE                                        16MB          1120     1040        mA     3, 22
Average power supply current                                   ICC4
(RAS#, CAS#, address cycling: tRC = tRC [MIN])                              32MB          1128     1048
OPERATING CURRENT: FAST PAGE MODE                                           16MB                   800        mA     3, 22
Average power supply current                                   ICC5
(RAS# = VIL, CAS#, address cycling: tPC = tPC [MIN]                         32MB                   816
OPERATING CURRENT: EDO PAGE MODE                               ICC6         16MB           880      800        mA     3, 22
Average power supply current                                 (X only)
(RAS# = VIL, CAS#, address cycling: tPC = tPC [MIN])                        32MB           888      808
REFRESH CURRENT: RAS#-ONLY                                                  16MB          1120     1040
Average power supply current                                   ICC7                                            mA     3, 22
(RAS# cycling, CAS# = VIH: tRC = tRC [MIN])                                 32MB          1128     1048
REFRESH CURRENT: CBR                                                        16MB          1120     1040
Average power supply current                                   ICC8                                            mA     3, 4
(RAS#, CAS#, address cycling: tRC = tRC [MIN])                              32MB          1128     1048
*EDO version only

CAPACITANCE

                                                       MAX
PARAMETER                               SYMBOL     16MB   32MB    UNITS    NOTES
Input Capacitance: A0-A10                 CI1       48     95       pF       2
Input Capacitance: WE#                    CI2       64    127       pF       2
Input Capacitance: RAS0#-RAS3#            CI3       32     32       pF       2
Input Capacitance: CAS0#-CAS3#            CI4       16     32       pF       2
Input/Output Capacitance: DQ1-DQ32        CIO       10     16       pF       2

AC ELECTRICAL CHARACTERISTICS, FAST PAGE MODE

(Notes: 5, 6, 7, 8, 9, 10, 11, 12) (VDD = +5V 10%)

   AC CHARACTERISTICS - FAST PAGE MODE OPTION                                                  -6
   PARAMETER                                                 SYMBOL                 MIN               MAX               UNITS               NOTES
   Access time from column address                              tAA                                    30                  ns
   Column-address hold time (referenced to RAS#)                tAR                  45                                    ns
   Column-address setup time                                   tASC                   0                                    ns
   Row-address setup time                                      tASR                   0                                    ns
   Access time from CAS#                                       tCAC                                    15                  ns
   Column-address hold time                                    tCAH                  10                                    ns
   CAS# pulse width                                            tCAS                  15              10,000                ns
   CAS# hold time (CBR Refresh)                                tCHR                  10                                    ns                   4
   CAS# to output in Low-Z                                     tCLZ                   3                                    ns                  21
   CAS# precharge time                                          tCP                  10                                    ns                  13
   Access time from CAS# precharge                             tCPA                                     35                 ns
   CAS# to RAS# precharge time                                 tCRP                   5                                    ns
   CAS# hold time                                              tCSH                  60                                    ns
   CAS# setup time (CBR Refresh)                               tCSR                   5                                    ns                   4
   WRITE command to CAS# lead time                             tCWL                  15                                    ns
   Data-in hold time                                            tDH                  10                                    ns                  18
   Data-in setup time                                           tDS                   0                                    ns                  18
   Output buffer turn-off delay                                tOFF                   3                 15                 ns              17, 21
   FAST-PAGE-MODE READ or WRITE cycle time                      tPC                  35                                    ns
   Access time from RAS#                                       tRAC                                     60                 ns
   RAS# to column-address delay time                           tRAD                  15                                    ns                  15
   Row-address hold time                                       tRAH                  10                                    ns
   RAS# pulse width                                            tRAS                  60              10,000                ns
   RAS# pulse width (FAST PAGE MODE)                          tRASP                  60              125,000               ns
   Random READ or WRITE cycle time                              tRC                 110                                    ns
   RAS# to CAS# delay time                                     tRCD                  20                                    ns                  14
   READ command hold time (referenced to CAS#)                 tRCH                   0                                    ns                  16
   READ command setup time                                     tRCS                   0                                    ns
   Refresh period (2,048 cycles)                               tREF                                     32                 ms
   RAS# precharge time                                          tRP                  40                                    ns
   RAS# to CAS# precharge time                                 tRPC                   0                                    ns
   READ command hold time (referenced to RAS#)                 tRRH                   0                                    ns                  16
   RAS# hold time                                              tRSH                  15                                    ns
   WRITE command to RAS# lead time                             tRWL                  15                                    ns
   Transition time (rise or fall)                                tT                  2                 50                  ns
   WRITE command hold time                                     tWCH                  10                                    ns
   WRITE command hold time (referenced to RAS#)                tWCR                  45                                    ns
   WE# command setup time                                      tWCS                   0                                    ns
   WRITE command pulse width                                    tWP                  10                                    ns
   WE# hold time (CBR Refresh)                                 tWRH                  10                                    ns
   WE# setup time (CBR Refresh)                                tWRP                  10                                    ns

AC ELECTRICAL CHARACTERISTICS, EDO PAGE MODE

(Notes: 5, 6, 7, 8, 9, 10, 11, 12) (VDD = +5V 10%)


   AC CHARACTERISTICS - EDO PAGE MODE OPTION                               -5                                  -6
   PARAMETER                                           SYMBOL       MIN           MAX               MIN               MAX               UNITS               NOTES
   Access time from column address                      tAA                        25                                   30                 ns
   Column-address set-up to CAS# precharge              tACH        12                               15                                    ns
   Column-address hold time (referenced to RAS#)        tAR         38                               45                                    ns
   Column-address setup time                            tASC        0                                 0                                    ns
   Row-address setup time                               tASR        0                                 0                                    ns
   Access time from CAS#                                tCAC                       13                                   15                 ns
   Column-address hold time                             tCAH         8                               10                                    ns
   CAS# pulse width                                     tCAS        8            10,000              10              10,000                ns
   CAS# hold time (CBR Refresh)                        tCHR         8                                10                                    ns                   4
   CAS# to output in Low-Z                              tCLZ         0                                0                                    ns
   Data output hold after next CAS# LOW                tCOH          3                                3                                    ns
   CAS# precharge time                                  tCP          8                               10                                    ns                  13
   Access time from CAS# precharge                      tCPA                       28                                   35                 ns
   CAS# to RAS# precharge time                          tCRP         5                                5                                    ns
   CAS# hold time                                       tCSH        38                               45                                    ns
   CAS# setup time (CBR Refresh)                        tCSR         5                                5                                    ns                   4
   WRITE command to CAS# lead time                     tCWL          8                               10                                    ns
   Data-in hold time                                    tDH         8                                10                                    ns                  18
   Data-in setup time                                   tDS          0                                0                                    ns                  18
   Output buffer turn-off delay                         tOFF         0             12                 0                 15                 ns               17, 21
   EDO-PAGE-MODE READ or WRITE cycle time               tPC         20                               25                                    ns
   Access time from RAS#                                tRAC                       50                                   60                 ns
   RAS# to column-address delay time                    tRAD         9                               12                                    ns                  15
   Row-address hold time                                tRAH         9                               10                                    ns
   RAS# pulse width                                     tRAS        50           10,000              60              10,000                ns
   RAS# pulse width (EDO PAGE MODE)                    tRASP        50           125,000             60              125,000               ns
   Random READ or WRITE cycle time                      tRC         84                              104                                    ns
   RAS# to CAS# delay time                             tRCD         11                               14                                    ns                  14
   READ command hold time (referenced to CAS#)         tRCH          0                                0                                    ns                  16
   READ command setup time                              tRCS         0                                0                                    ns
   Refresh period (2,048 cycles)                        tREF                       32                                   32                 ms
   RAS# precharge time                                  tRP         30                               40                                    ns
   RAS# to CAS# precharge time                          tRPC         5                                5                                    ns
   READ command hold time (referenced to RAS#)         tRRH          0                                0                                    ns                  16
   RAS# hold time                                       tRSH        13                               15                                    ns
   WRITE command to RAS# lead time                     tRWL         13                               15                                    ns
   Transition time (rise or fall)                        tT          2             50                 2                 50                 ns
   WRITE command hold time                             tWCH         8                                10                                    ns
   WRITE command hold time (referenced to RAS#)        tWCR         38                               45                                    ns
   WE# command setup time                              tWCS          0                                0                                    ns
   Output disable delay from WE#                       tWHZ          0             12                 0                 15                 ns
   WRITE command pulse width                            tWP          5                                5                                    ns
   WE# pulse to disable at CAS# HIGH                   tWPZ         10                               10                                    ns
   WE# hold time (CBR Refresh)                         tWRH         8                                10                                    ns
   WE# setup time (CBR Refresh)                        tWRP          8                               10                                    ns

NOTES

  1. All voltages referenced to VSS.
  2. This parameter is sampled. Capacitance is measured using MIL-STD-883C, Method 3012.1 (1 MHz AC, VDD = 4.5V, DC bias = 2.4V at 15mV RMS).
  3. ICC is dependent on output loading and cycle rates. Specified values are obtained with minimum cycle time and the outputs open.
  4. Enables on-chip refresh and address counters.
  5. The minimum specifications are used only to indicate cycle time at which proper operation over the full temperature range is ensured.
  6. An initial pause of 100s is required after power-up, followed by eight RAS# refresh cycles (RAS#-ONLY or CBR with WE# HIGH), before proper device operation is ensured. The eight RAS# cycle wake-ups should be repeated any time the tREF refresh requirement is exceeded.
  7. AC characteristics assume tT = 5ns for FPM and tT = 2.5ns for EDO.
  8. VIH (MIN) and VIL (MAX) are reference levels for measuring timing of input signals. Transition times are measured between VIH and VIL (or between VIL and VIH).
  9. In addition to meeting the transition rate specification, all input signals must transit between VIH and VIL (or between VIL and VIH) in a monotonic manner.
  10. If CAS# = VIH, data output is High-Z.
  11. If CAS# = VIL, data output may contain data from the last valid READ cycle.
  12. Measured with a load equivalent to two TTL gates and 100pF, VOL = 0.8V and VOH = 2V.
  13. If CAS# is LOW at the falling edge of RAS#, Q will be maintained from the previous cycle. To initiate a new cycle and clear the data-out buffer, CAS# must be pulsed HIGH for tCP.
  14. The tRCD (MAX) limit is no longer specified. tRCD (MAX) was specified as a reference point only. If tRCD was greater than the specified tRCD (MAX) limit, then access time was controlled exclusively by tCAC (tRAC [MIN] no longer applied). With or without the tRCD (MAX) limit, tAA and tCAC must always be met.
  15. The tRAD (MAX) limit is no longer specified. tRAD (MAX) was specified as a reference point only. If tRAD was greater than the specified tRAD (MAX) limit, then access time was controlled exclusively by tAA (tRAC and tCAC no longer applied). With or without the tRAD (MAX) limit, tAA, tRAC and tCAC must always be met.
  16. Either tRCH or tRRH must be satisfied for a READ cycle.
  17. tOFF (MAX) defines the time at which the output achieves the open circuit condition and is not referenced to VOH or VOL.
  18. These parameters are referenced to CAS# leading edge in EARLY WRITE cycles.
  19. OE# is tied permanently LOW; LATE WRITE or READ-MODIFY-WRITE operations are not permissible and should not be attempted.
  20. A HIDDEN REFRESH may also be performed after a WRITE cycle. In this case, WE# = LOW and OE# = HIGH.
  21. The 3ns minimum is a parameter guaranteed by design.
  22. Column address changed once each cycle.
  23. 16MB module values will be half of those shown.
  24. For the FPM option, tOFF is determined by the first RAS# or CAS# signal to transition HIGH. In comparison, tOFF on an EDO option is determined by the latter of the RAS# and CAS# signals to transition HIGH.
  25. Applies to both EDO and FPM modules.

READ CYCLE (FAST PAGE MODE Module)

FAST PAGE MODE TIMING PARAMETERS

                                                                -6                                                                                                                       -6
   SYMBOL                                           MIN                MAX      UNITS                       SYMBOL                                                             MIN                MAX           UNITS
   t                                                                                                        t
   AA                                                                  30        ns                              RAC                                                                               60              ns
   t                                                                                                        t
   AR                                               45                           ns                              RAD                                                            15                                 ns
   t                                                                                                        t
   ASC                                                   0                       ns                              RAH                                                            10                                 ns
   t                                                                                                        t
   ASR                                                   0                       ns                              RAS                                                            60              10,000             ns
   t                                                                                                        t
   CAC                                                                 15        ns                              RC                                                            110                                 ns
   t                                                                                                        t
   CAH                                              10                           ns                              RCD                                                            20                                 ns
   t                                                                                                        t
   CAS                                              15                10,000     ns                              RCH                                                            0                                  ns
   t                                                                                                        t
   CLZ                                                   3                       ns                              RCS                                                            0                                  ns
   t                                                                                                        t
   CRP                                                   5                       ns                              RP                                                             40                                 ns
   t                                                                                                        t
   CSH                                              60                           ns                              RRH                                                            0                                  ns
   t                                                                                                        t
   OFF                                                   3             15        ns                              RSH                                                            15                                 ns

READ CYCLE (EDO PAGE MODE Module)

EDO PAGE MODE TIMING PARAMETERS

                                     -5                                       -6                                                                               -5                                 -6
   SYMBOL                     MIN                MAX             MIN                 MAX      UNITS                       SYMBOL                     MIN                   MAX          MIN                MAX           UNITS
   tAA                                           25                                  30        ns                         tRAC                                              50                              60              ns
   tAR                        38                                 45                            ns                         tRAD                         9                                 12                                 ns
   tASC                       0                                  0                             ns                         tRAH                         9                                 10                                 ns
   tASR                       0                                  0                             ns                         tRAS                        50                  10,000         60              10,000             ns
   tCAC                                          13                                  15        ns                         tRC                         84                                104                                 ns
   tCAH                       8                                  10                            ns                         tRCD                        11                                 14                                 ns
   tCAS                       8                 10,000           10                 10,000     ns                         tRCH                         0                                 0                                  ns
   tCLZ                       0                                  0                             ns                         tRCS                         0                                 0                                  ns
   tCRP                       5                                   5                            ns                         tRP                         30                                 40                                 ns
   tCSH                       38                                 45                            ns                         tRRH                         0                                 0                                  ns
   tOFF                       0                  12              0                   15        ns                         tRSH                        13                                 15                                 ns

NOTE: 1. tOFF is referenced from rising edge of RAS# or CAS#, whichever occurs last.

EARLY WRITE CYCLE25

FAST PAGE MODE AND EDO PAGE MODE TIMING PARAMETERS

                                           -5*                                     -6                                                                                               -5*                                 -6
   SYMBOL                           MIN            MAX                 MIN                 MAX      UNITS                             SYMBOL                               MIN              MAX               MIN                MAX           UNITS
   t                                                                                                                                  t
   ACH (EDO)                        12                                 15                            ns                                    RAD (EDO)                         9                                 12                                 ns
   t                                                                                                                                  t
   AR                               38                                 45                            ns                                    RAH                               9                                 10                                 ns
   t                                                                                                                                  t
   ASC                              0                                  0                             ns                                    RAS                              50             10,000              60              10,000             ns
   t                                                                                                                                  t
   ASR                              0                                  0                             ns                                    RC (FPM)                                                          110                                 ns
   t                                                                                                                                  t
   CAH                              8                                  10                            ns                                    RC (EDO)                         84                                104                                 ns
   t                                                                                                                                  t
   CAS (FPM)                                                         15                 10,000     ns                                    RCD (FPM)                                                          20                                 ns
   t                                                                                                                                  t
   CAS (EDO)                        8             10,000               10                 10,000     ns                                    RCD (EDO)                        11                                 14                                 ns
   t                                                                                                                                  t
   CRP                              5                                   5                            ns                                    RP                               30                                 40                                 ns
   t                                                                                                                                  t
   CSH (FPM)                                                          60                            ns                                    RSH                              13                                 15                                 ns
   t                                                                                                                                  t
   CSH (EDO)                        38                                 45                            ns                                    RWL                              13                                 15                                 ns
   t                                                                                                                                  t
   CWL (FPM)                                                          15                            ns                                    WCH                               8                                 10                                 ns
   t                                                                                                                                  t
   CWL (EDO)                        8                                  10                            ns                                    WCR                              38                                 45                                 ns
   t                                                                                                                                  t
   DH                               8                                  10                            ns                                    WCS                               0                                 0                                  ns
   t                                                                                                                                  t
   DS                               0                                  0                             ns                                    WP (FPM)                                                           10                                 ns
   t                                                                                                                                  t
   RAD (FPM)                                                          15                            ns                                    WP (EDO)                          5                                 5                                  ns
*EDO version only

FAST-PAGE-MODE READ CYCLE

FAST PAGE MODE TIMING PARAMETERS

                                                                                               -6                                                                                                                                                                             -6
   SYMBOL                                                                    MIN                      MAX                    UNITS                                           SYMBOL                                                                                  MIN               MAX                  UNITS
   t                                                                                                                                                                         t
   AA                                                                                                 30                           ns                                             OFF                                                                                 3                 15                   ns
   t                                                                                                                                                                         t
   AR                                                                        45                                                    ns                                             PC                                                                                 35                                      ns
   t                                                                                                                                                                         t
   ASC                                                                        0                                                    ns                                             RAC                                                                                                   60                   ns
   t                                                                                                                                                                         t
   ASR                                                                        0                                                    ns                                             RAD                                                                                15                                      ns
   t                                                                                                                                                                         t
   CAC                                                                                                15                           ns                                             RAH                                                                                10                                      ns
   t                                                                                                                                                                         t
   CAH                                                                       10                                                    ns                                             RASP                                                                               60             125,000                  ns
   t                                                                                                                                                                         t
   CAS                                                                       15                      10,000                        ns                                             RCD                                                                                20                                      ns
   t                                                                                                                                                                         t
   CLZ                                                                        3                                                    ns                                             RCH                                                                                 0                                      ns
   t                                                                                                                                                                         t
   CP                                                                        10                                                    ns                                             RCS                                                                                 0                                      ns
   t                                                                                                                                                                         t
   CPA                                                                                                35                           ns                                             RP                                                                                 40                                      ns
   t                                                                                                                                                                         t
   CRP                                                                        5                                                    ns                                             RRH                                                                                 0                                      ns
   t                                                                                                                                                                         t
   CSH                                                                       60                                                    ns                                             RSH                                                                                15                                      ns

EDO-PAGE-MODE READ CYCLE

EDO PAGE MODE TIMING PARAMETERS

                                                    -5                                             -6                                                                                                                     -5                              -6
   SYMBOL                              MIN                 MAX                    MIN                      MAX                     UNITS                      SYMBOL                                     MIN                     MAX               MIN             MAX                     UNITS
   t                                                                                                                                                          t
   AA                                                           25                                         30                       ns                             CSH                                       38                                    45                                       ns
   t                                                                                                                                                          t
   ACH                                  12                                        15                                                ns                             OFF                                       0                    12               0                15                      ns
   t                                                                                                                                                          t
   AR                                   38                                        45                                                ns                             PC                                        20                                    25                                       ns
   t                                                                                                                                                          t
   ASC                                  0                                         0                                                 ns                             RAC                                                            50                                60                      ns
   t                                                                                                                                                          t
   ASR                                  0                                         0                                                 ns                             RAD                                       9                                     12                                       ns
   t                                                                                                                                                          t
   CAC                                                          13                                         15                       ns                             RAH                                       9                                     10                                       ns
   t                                                                                                                                                          t
   CAH                                  8                                         10                                                ns                             RASP                                      50                 125,000            60           125,000                     ns
   t                                                                                                                                                          t
   CAS                                  8                 10,000                  10                      10,000                    ns                             RCD                                       11                                    14                                       ns
   t                                                                                                                                                          t
   CLZ                                  0                                         0                                                 ns                             RCH                                       0                                     0                                        ns
   t                                                                                                                                                          t
   COH                                  3                                         3                                                 ns                             RCS                                       0                                      0                                       ns
   t                                                                                                                                                          t
   CP                                   8                                         10                                                ns                             RP                                        30                                    40                                       ns
   t                                                                                                                                                          t
   CPA                                                          28                                         35                       ns                             RRH                                       0                                     0                                        ns
   t                                                                                                                                                          t
   CRP                                  5                                          5                                                ns                             RSH                                       13                                    15                                       ns

FAST-PAGE-MODE EARLY-WRITE CYCLE

FAST PAGE MODE TIMING PARAMETERS

                                                                                                     -6                                                                                                                                                            -6
   SYMBOL                                                                          MIN                      MAX                  UNITS                           SYMBOL                                                                                     MIN             MAX               UNITS
   t                                                                                                                                                             t
   AR                                                                               45                                            ns                                  RAD                                                                                   15                                 ns
   t                                                                                                                                                             t
   ASC                                                                              0                                             ns                                  RAH                                                                                   10                                 ns
   t                                                                                                                                                             t
   ASR                                                                              0                                             ns                                  RASP                                                                                  60           125,000               ns
   t                                                                                                                                                             t
   CAH                                                                              10                                            ns                                  RCD                                                                                   20                                 ns
   t                                                                                                                                                             t
   CAS                                                                              15                     10,000                 ns                                  RP                                                                                    40                                 ns
   t                                                                                                                                                             t
   CP                                                                               10                                            ns                                  RSH                                                                                   15                                 ns
   t                                                                                                                                                             t
   CRP                                                                              5                                             ns                                  RWL                                                                                   15                                 ns
   t                                                                                                                                                             t
   CSH                                                                              60                                            ns                                  WCH                                                                                   10                                 ns
   t                                                                                                                                                             t
   CWL                                                                              15                                            ns                                  WCR                                                                                   45                                 ns
   t                                                                                                                                                             t
   DH                                                                               10                                            ns                                  WCS                                                                                   0                                  ns
   t                                                                                                                                                             t
   DS                                                                               0                                             ns                                  WP                                                                                    10                                 ns
   tPC                                                                              35                                            ns

EDO-PAGE-MODE EARLY-WRITE CYCLE

EDO PAGE MODE TIMING PARAMETERS

                                               -5                                                         -6                                                                                                                        -5                                         -6
   SYMBOL                             MIN                 MAX                           MIN                      MAX                  UNITS                           SYMBOL                                     MIN                            MAX                     MIN             MAX               UNITS
   t                                                                                                                                                                  t
   ACH                                 12                                               15                                             ns                                  PC                                     20                                                    25                                 ns
   t                                                                                                                                                                  t
   AR                                  38                                               45                                             ns                                  RAD                                     9                                                    12                                 ns
   t                                                                                                                                                                  t
   ASC                                 0                                                 0                                             ns                                  RAH                                     9                                                    10                                 ns
   t                                                                                                                                                                  t
   ASR                                 0                                                 0                                             ns                                  RASP                                   50                      125,000                       60           125,000               ns
   t                                                                                                                                                                  t
   CAH                                 8                                                10                                             ns                                  RCD                                    11                                                    14                                 ns
   t                                                                                                                                                                  t
   CAS                                 8                 10,000                         10                      10,000                 ns                                  RP                                     30                                                    40                                 ns
   t                                                                                                                                                                  t
   CP                                  8                                                10                                             ns                                  RSH                                    13                                                    15                                 ns
   t                                                                                                                                                                  t
   CRP                                 5                                                 5                                             ns                                  RWL                                    13                                                    15                                 ns
   t                                                                                                                                                                  t
   CSH                                 38                                               45                                             ns                                  WCH                                     8                                                    10                                 ns
   t                                                                                                                                                                  t
   CWL                                 8                                                10                                             ns                                  WCR                                    38                                                    45                                 ns
   t                                                                                                                                                                  t
   DH                                  8                                                10                                             ns                                  WCS                                     0                                                      0                                ns
   t                                                                                                                                                                  t
   DS                                  0                                                 0                                             ns                                  WP                                      5                                                      5                                ns

EDO-PAGE-MODE READ-EARLY-WRITE CYCLE (Pseudo READ-MODIFY-WRITE)

EDO PAGE MODE TIMING PARAMETERS

                                      -5                                       -6                                                                                                                                       -5                                          -6
   SYMBOL                     MIN             MAX                 MIN                  MAX                         UNITS                                SYMBOL                                             MIN                  MAX                     MIN                  MAX            UNITS
   t                                                                                                                                                    t
   AA                                         25                                            30                           ns                                  DS                                             0                                                0                                ns
   t                                                                                                                                                    t
   ACH                         12                                 15                                                     ns                                  PC                                             20                                               25                               ns
   t                                                                                                                                                    t
   AR                          38                                 45                                                     ns                                  RAC                                                                50                                            60              ns
   t                                                                                                                                                    t
   ASC                         0                                   0                                                     ns                                  RAD                                            9                                                12                               ns
   t                                                                                                                                                    t
   ASR                         0                                   0                                                     ns                                  RAH                                            9                                                10                               ns
   t                                                                                                                                                    t
   CAC                                        13                                            15                           ns                                  RASP                                           50                125,000                        60           125,000             ns
   t                                                                                                                                                    t
   CAH                         8                                  10                                                     ns                                  RCD                                            11                                               14                               ns
   t                                                                                                                                                    t
   CAS                         8            10,000                10                  10,000                             ns                                  RCH                                            0                                                0                                ns
   t                                                                                                                                                    t
   COH                         3                                   3                                                     ns                                  RCS                                            0                                                0                                ns
   t                                                                                                                                                    t
   CP                          8                                  10                                                     ns                                  RP                                             30                                               40                               ns
   t                                                                                                                                                    t
   CPA                                        28                                            35                           ns                                  RSH                                            13                                               15                               ns
   t                                                                                                                                                    t
   CRP                         5                                   5                                                     ns                                  WCH                                            8                                                10                               ns
   t                                                                                                                                                    t
   CSH                         38                                 45                                                     ns                                  WCS                                            0                                                0                                ns
   t                                                                                                                                                    t
   DH                          8                                  10                                                     ns                                  WHZ                                            0                   12                           0                15              ns

FAST-PAGE-MODE READ-EARLY-WRITE CYCLE (Pseudo READ-MODIFY-WRITE)

FAST PAGE MODE TIMING PARAMETERS

                                                                      -6                                                                                                                                                           -6
   SYMBOL                                                MIN                 MAX                 UNITS                                  SYMBOL                                                                   MIN                        MAX           UNITS
   t                                                                                                                                    t
   AA                                                                         30                      ns                                     OFF                                                                  3                          15              ns
   t                                                                                                                                    t
   AR                                                    45                                           ns                                     PC                                                                   35                                         ns
   t                                                                                                                                    t
   ASC                                                    0                                           ns                                     RAC                                                                                             60              ns
   t                                                                                                                                    t
   ASR                                                    0                                           ns                                     RAD                                                                  15                                         ns
   t                                                                                                                                    t
   CAC                                                                        15                      ns                                     RAH                                                                  10                                         ns
   t                                                                                                                                    t
   CAH                                                   10                                           ns                                     RASP                                                                 60                     125,000             ns
   t                                                                                                                                    t
   CAS                                                   15                 10,000                    ns                                     RCD                                                                  20                                         ns
   t                                                                                                                                    t
   CLZ                                                   3                                            ns                                     RCS                                                                  0                                          ns
   t                                                                                                                                    t
   CP                                                    10                                           ns                                     RP                                                                   40                                         ns
   t                                                                                                                                    t
   CRP                                                   5                                            ns                                     RSH                                                                  15                                         ns
   t                                                                                                                                    t
   CSH                                                   60                                           ns                                     RWL                                                                  15                                         ns
   t                                                                                                                                    t
   CWL                                                   15                                           ns                                     WCH                                                                  10                                         ns
   t                                                                                                                                    t
   DH                                                    10                                           ns                                     WCS                                                                  0                                          ns
   t                                                                                                                                    t
   DS                                                    0                                            ns                                     WP                                                                   10                                         ns

EDO READ CYCLE (with WE#-controlled disable)

EDO PAGE MODE TIMING PARAMETERS

                                           -5                                  -6                                                                                        -5                              -6
   SYMBOL                           MIN           MAX              MIN                MAX       UNITS                       SYMBOL                          MIN                MAX             MIN                MAX           UNITS
   tAA                                            25                                   30        ns                         tCSH                             38                                 45                                 ns
   tAR                              38                              45                           ns                         tRAC                                               50                                  60              ns
   tASC                             0                               0                            ns                         tRAD                              9                                 12                                 ns
   tASR                             0                               0                            ns                         tRAH                              9                                 10                                 ns
   tCAC                                           13                                   15        ns                         tRCD                             11                                 14                                 ns
   tCAH                             8                               10                           ns                         tRCH                              0                                 0                                  ns
   tCAS                             8            10,000             10               10,000      ns                         tRCS                              0                                 0                                  ns
   tCLZ                             0                               0                            ns                         tWHZ                              0                12               0                  15              ns
   tCP                              8                               10                           ns                         tWPZ                             10                                 10                                 ns
   tCRP                             5                               5                            ns

RAS#-ONLY REFRESH CYCLE 25

CBR REFRESH CYCLE 25 (Addresses = DON'T CARE)

FAST PAGE MODE AND EDO PAGE MODE TIMING PARAMETERS

                                                    -5*                                      -6                                                                                   -5*                                 -6
   SYMBOL                                  MIN              MAX                      MIN            MAX        UNITS               SYMBOL                                MIN              MAX               MIN                MAX           UNITS
   t                                                                                                                               t
   ASR                                         0                                      0                          ns                     RC (FPM)                                                           110                                 ns
   t                                                                                                                               t
   CHR (FPM)                                                                         10                         ns                     RC (EDO)                          84                                104                                 ns
   t                                                                                                                               t
   CHR (EDO)                                   8                                      10                         ns                     RP                                30                                 40                                 ns
   t                                                                                                                               t
   CP                                          8                                      10                         ns                     RPC (FPM)                                                           0                                  ns
   t                                                                                                                               t
   CRP                                         5                                      5                          ns                     RPC (EDO)                          5                                 5                                  ns
   t                                                                                                                               t
   CSR                                         5                                      5                          ns                     WRH                                8                                 10                                 ns
   t                                                                                                                               t
   RAH                                         9                                      10                         ns                     WRP                                8                                 10                                 ns
   tRAS                                    50              10,000                     60           10,000        ns

*EDO version only

HIDDEN REFRESH CYCLE 20, 25 (WE# = HIGH)

FAST PAGE MODE AND EDO PAGE MODE TIMING PARAMETERS

                                            -5*                                 -6                                                                                             -5*                                    -6
   SYMBOL                       MIN                MAX                MIN               MAX                 UNITS                         SYMBOL                      MIN              MAX               MIN                   MAX           UNITS
   t                                                                                                                                      t
   AA                                               25                                  30                   ns                                OFF (EDO)                0               12                0                     15              ns
   t                                                                                                                                      t
   AR                           38                                     45                                    ns                                RAC                                      50                                      60              ns
   t                                                                                                                                      t
   ASC                          0                                       0                                    ns                                RAD (FPM)                                                 15                                    ns
   t                                                                                                                                      t
   ASR                          0                                       0                                    ns                                RAD (EDO)                9                                 12                                    ns
   t                                                                                                                                      t
   CAC                                              13                                  15                   ns                                RAH                      9                                 10                                    ns
   t                                                                                                                                      t
   CAH                          8                                      10                                    ns                                RAS                     50             10,000              60                 10,000             ns
   t                                                                                                                                      t
   CHR                          8                                      10                                    ns                                RCD (FPM)                                                 20                                    ns
   t                                                                                                                                      t
   CLZ (FPM)                                                           3                                    ns                                RCD (EDO)               11                                 14                                    ns
   t                                                                                                                                      t
   CLZ (EDO)                    0                                       0                                    ns                                RP                      30                                 40                                    ns
   t                                                                                                                                      t
   CRP                          5                                       5                                    ns                                RSH                     13                                 15                                    ns
   tOFF (FPM)                                                         3               15                   ns

*EDO version only

72-Pin SIMM (16MB)

72-Pin SIMM (32MB)

NOTE: 1. All dimensions in inches (millimeters) MAX or typical where noted.

 

 

 

 

 

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