TMS464409 Datasheet, PDF (29/33 Pages) Texas Instruments – 16 777 216 BY 4-BIT EXTENDED DATA OUT DYNAMIC RANDOM-ACCESS MEMORIES

TMS464409, TMS464409P, TMS465409, TMS465409P
16 777 216 BY 4-BIT EXTENDED DATA OUT
DYNAMIC RANDOM-ACCESS MEMORIES
SMKS895A – MAY 1997 – REVISED OCTOBER 1997
PARAMETER MEASUREMENT INFORMATION
Memory Cycle
tRAS
tRP
Refresh Cycle
tRAS
tRP
Refresh Cycle
RAS
CAS
tCAS
tCHR
tRAH
tCAH
tASC
tASR
Address
Row
Col
tWCS
tWP
W
Don’t Care
tWRH
tWRP
tWCH
tDS
tDH
DQ1 – DQ4
Valid Data
Don’t Care
OE
Don’t Care
Figure 17. Hidden-Refresh-Cycle (Write) Timing
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