SMJ44C251 Datasheet, PDF (32/53 Pages) Texas Instruments – 262144 BY 4-BIT MULTIPORT VIDEO RAM

SMJ44C251B
262144 BY 4-BIT
MULTIPORT VIDEO RAM
SGMS058A – MARCH 1995 – REVISED JUNE 1995
PARAMETER MEASUREMENT INFORMATION
RAS
tc( _{W )}
tw(RL)
tt
td(CHRL)
CAS
td(RLCL)
tsu(RA)
A0 – A8
Refresh
Row
th(RA)
th(RSF)
tsu(SFR)
tsu(SFC)
th(SFR)
th(RSF)
td(RLCH)
td(CLRH)
tw(CL)
Don’t Care
th(SFC)
tw(RH)
tt
td(CHRL)
tw(CH)
DSF
tsu( _TRG)
TRG
tsu( _WMR)
W
DQ0 – DQ3
th( _TRG)
th(RWM)
tsu( _WCH)
tsu( _WRH)
th(RLW ₎
tsu( _WCL)
th(CLW ₎
tsu(DCL)
tw( _WL)
th(CLD)
th(RLD)
Valid Color Data Input
Figure 20. Load-Color-Register-Cycle Timing (Early-Write Load)
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