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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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H8SX1663 数据表(PDF) 340 Page - Renesas Technology Corp |
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H8SX1663 数据表(HTML) 340 Page - Renesas Technology Corp |
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340 / 1158 page  Section 6 Bus Controller (BSC) Rev.1.00 Jun. 07, 2006 Page 288 of 1102 REJ09B0294-0100 (4) When CKSPE = 1 When the SDRAM space is read, the read data settling cycle can be inserted for one cycle using the clock suspend mode. To enter the clock suspend mode, set the OEE bit to 1, and connect the CKE pin. Figure 6.87 shows an output timing example of the DACK signal when CKSPE = 1 with DDS = 1 and DKC = 0. T p T r T c1 T cl T sp T c2 T c1 T cl T sp T c2 CS Precharge-sel RAS CAS WE CKE PALL ACTV READ READ NOP NOP DQMLU DQMLL D7 to D0 BS DACK RD/ WR D15 to D8 SD φ Address bus Row address Column address 2 Column address 1 Row address Figure 6.87 Output Timing Example of DACK when CKSPE = 1 (Read, CAS Latency = 2) |
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