SMJ44C256 Datasheet, PDF (11/21 Pages) Texas Instruments – 262144 BY 4-BIT DYNAMIC RANDOM-ACCESS MEMORY

SMJ44C256
262144 BY 4-BIT
DYNAMIC RANDOM-ACCESS MEMORY
SGMS034C – MAY 1989 – REVISED JUNE 1995
PARAMETER MEASUREMENT INFORMATION
RAS
tw(RL)
tc(W)
tt
CAS
td(RLCL)
td(CLRH)
td(RLCH)
tw(CL)
tsu(RA)
th(RA)
tsu(CA)
th(RLCA)
td(CACH)
td(CARH)
A0 – A8
Row
Column
Don’t Care
td(RLCA)
W
Don’t Care
th(CA)
tsu(WCH)
tsu(WRH)
th(RLW)
th(CLW)
tsu(WCL)
tsu(D)
th(RLD)
tw(WL)
th(D)
DQ1 – DQ4
Valid Data
tw(RH)
td(CHRL)
tw(CH)
Don’t Care
Don’t Care
G
Don’t Care
Figure 3. Early-Write-Cycle Timing
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