SH7720 Datasheet, PDF (1408/1524 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
Tp
Tpw
Trr
Trc
Trc
Trc
Trc
tAD1
tAD1
tAD1
tAD1
tAD1
tAD1
tCSD1
tCSD1
tCSD1
tCSD1
tCSD1
tRWD1
tRWD1
tRASD1
tRASD1
tRASD1
tRASD1
tRWD1
tRASD1
tCASD1
tDQMD1
tCASD1
tCASD1
tCASD1
tDQMD1
D15 to D0
(High-Z)
tBSD
BS
CKE
(High)
tDACD
DACKn*²
Notes: 1. Address pin that is connected to A10 of SDRAM
2. Waveform when active low is specified for DACKn
Figure 38.34 Auto Refresh Timing of SDRAM (TRP = 2 Cycles)
Rev. 3.00 Jan. 18, 2008 Page 1346 of 1458
REJ09B0033-0300