HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 815

• Manufacturer Part Number: HD6417615
• Description: Hardware Manual
• Manufacturer: Hitachi Semiconductor

806
CKIO
Address
upper bits
Address
lower bits
BS
CSn
RD/WR
RD
WEn
DQMxx
D31–D0
DACKn
WAIT
RAS
CAS
OE
CKE
Note: A self-refresh cycle is always preceded by a precharge cycle. The number of cycles
between the two is determined by the number of cycles specified by TRP.
tRASD1
tCASD1
Figure 21.32 Synchronous DRAM Self-Refresh Cycle (TRAS = 3)
tAD
tRWD
Trr
tCKED
Trc1
tAD
tCSD1
tCASD1
tRASD1
Trc2
Tre
tCKED
Trc1
Tre
tCSD1
tRASD1