SH7641 Datasheet, PDF(1001/1036 Page) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7641 Series

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SH7641 Datasheet, PDF (1001/1036 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7641 Series

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CKIO

A25 to A0

A12/A11*1

Tp Tpw Trr Trc

PALL

tAD1

REF

tAD1

CSn

RD/WR

RASU/L

CASU/L

tCSD1 tCSD1 tCSD1 tCSD1

tRWD1 tRWD1

tRASD1 tRASD1 tRASD1 tRASD1

tCASD1 tCASD1

Section 25 Electrical Characteristics

Trc Trr Trc

REF

Trc Tmw Tde

MRS

tAD1

tAD1

tAD1

tCSD1 tCSD1

tRASD1 tRASD1

tCASD1 tCASD1

tCSD1 tCSD1

tRWD1 tRWD1 tRWD1

tRASD1 tRASD1

tCASD1 tCASD1

DQMxx

D31 to D0

(Hi-Z)*3

BS

CKE

DACKn*2

Note: 1. An address pin to be connected to pin A10 of SDRAM.

2. Waveform for DACKn when active low is selected.

3. Pins D31 to D16 with weak keeper are retained as weak keepers.

Figure 25.39 Synchronous DRAM Mode Register Write Timing (WTRP = 1 Cycle)

Rev. 4.00 Sep. 14, 2005 Page 951 of 982

REJ09B0023-0400

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