SH7720 Datasheet, PDF (1412/1524 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 38 Electrical Characteristics
CKIO
A23 to A0
A12/A11*¹
CSn
RD/WR
RAS
CAS
DQMx
D15 to D0
BS
CKE
DACKn*²
Tr
Tc
Tcw
Td1
Tde
Tr
Tc
Trwl
tAD1
tAD1
Row
Address
tAD1
tAD1
Column
Address
tAD1
tCSD1
READA
Command
tCSD1
tAD1
tAD1
tAD1
Row
Address
Column
Address
tAD1
tAD1
tAD1
tCSD1
WRITA
Command
tCSD1
tAD1
tAD1
tRASD1
tRASD1
tCASD1
tCASD1
tDQMD1
tRWD1
tRWD1
tRWD1
tRASD1
tRASD1
tRASD1
tCASD1
tCASD1
tCASD1
tDQMD1 tDQMD1
tDQMD1
tRDS2 tRDH2
tWDD2
tWDH2
tBSD
tBSD
tBSD
tBSD
tBSD
tCKED1
tDACD
tDACD
tDACD
tCKED1
tDACD
tDACD
Notes: 1. Address pin that is connected to A10 of SDRAM
2. Waveform when active low is specified for DACKn
Figure 38.38 Read to Write Bus Cycle in Power-Down Mode of SDRAM
(Auto Precharge Mode, TRCD = 1 Cycle, TRP = 1 Cycle, TRWL = 1 Cycle)
Rev. 3.00 Jan. 18, 2008 Page 1350 of 1458
REJ09B0033-0300