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SH7261 Datasheet(PDF) 294 Page - Renesas Technology Corp

Part # SH7261
Description  32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series
PDF  1348 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7261 Datasheet(HTML) 294 Page - Renesas Technology Corp

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Section 9 Bus State Controller (BSC)
Rev. 2.00 Sep. 07, 2007 Page 262 of 1312
REJ09B0320-0200
CKIO
ACT: Row and bank activation command
WR: Write command
PRA: Precharge-all command
DSL: Deselect command
SDRAM command
Data bus
Multiple write
ACT
WR
DSL
WR
DSL
WR
DSL
WR
PRA
d1
d2
d3
d0
Figure 9.17 Multiple Write Timing Example (Multiple Write of 4 Data Units,
Shortest Timing Settings) Non-Consecutive Write Commands Issued
CKIO
ACT: Row and bank activation command
WR: Write command
PRA: Precharge-all command
SDRAM command
Data bus
Multiple write
Row address A
Row address B
ACT
WR
WR
WR
PRA
ACT
WR
PRA
d0
d1
d2
d3
Figure 9.18 Multiple Write Timing Example (Multiple Write of 4 Data Units,
Shortest Timing Settings) Access Spanning Rows



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