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| SH7708 Datasheet, PDF (553/633 Pages) Renesas Technology Corp – SuperH™ RISC engine | |||
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CKIO
A25âA16
A12 or A10
A15âA0
CSn
RD/WR
RAS
CAS
DQMxx
Tr
Trw
Tc1
Tc2
Tc3
Tc4 (Trwl) (Tpc)
tAD
tAD
Row address
tAD
tAD
,, Row
address
tAD
tAD
,, Row
address
,, tCSD1
tAD
tAD
Write command
Write A
command
tAD
Column address (1â4)
tCSD1
tRWD
tRWD
tRWD
tRASD2 tRASD2
tCASD2
,,,tDQMD
tWDD2 tWDD2
tCASD2
tDQMD
tWDH2
D31âD0
tBSD
BS
tBSD
CKE
(High)
Figure 17.41 Synchronous DRAM Write Bus Cycle (Burst Mode (Single Write à 4),
RCD = 1, TPC = 0, TRWL = 0)
535
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