HD6417751RBP240V Datasheet, PDF (1150/1226 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

23. Electrical Characteristics
CKIO
A25–A0
CSn
RD/WR
RAS
CASn
D31–D0
(write)
TRr1
TRr2
TRr3
TRr4 TRr4w TRr5
Trc
Trc
Trc
t_AD
t_CSD
t_RWD
t_RASD
t_RASD
t_CASD1
t_CASD1
t_WDD
t_RASD
t_CASD1
BS
DACKn
(SA: IO ← memory)
DACKn
(SA: IO → memory)
t_DACD
t_DACD
Legend:
IO: DACK device
SA: Single address DMA transfer
DA: Dual address DMA transfer
DACK set to active-high
Figure 23.48 DRAM Bus Cycle: DRAM CAS-Before-RAS Refresh
(TRAS [2:0] = 001, TRC [2:0] = 001)
Rev.4.00 Oct. 10, 2008 Page 1050 of 1122
REJ09B0370-0400