SMJ44C256 Datasheet, PDF (12/21 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
tc(W)
tw(RL)
CAS
tt
td(RLCL)
td(CLRH)
td(RLCH)
tw(CL)
tw(RH)
td(CHRL)
th(RA)
tsu(RA)
th(RLCA)
tsu(CA)
A0 – A8
Row
Column
td(CACH)
td(CARH)
Don’t Care
td(RLCA)
th(CA)
W
Don’t Care
tsu(WCH)
tsu(WRH)
tsu(D)
th(RLD)
th(RLW)
tw(WL)
th(D)
tw(CH)
Don’t Care
DQ1 – DQ4
G
Don’t Care
td(GHD)
Valid Data
th(WLGL)
Figure 4. Write-Cycle Timing
Don’t Care
Don’t Care
12
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443