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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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H8SX/1663R 数据表(PDF) 306 Page - Renesas Technology Corp |
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H8SX/1663R 数据表(HTML) 306 Page - Renesas Technology Corp |
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306 / 1504 page  Section 9 Bus Controller (BSC) Rev. 2.00 Sep. 24, 2008 Page 274 of 1468 REJ09B0412-0200 9.9.6 Address Cycle Control An extension cycle (Tmaw) can be inserted between Tma1 and Tma2 cycles to extend the AH signal output period by setting the ADDEX bit in MPXCR. By inserting the Tmaw cycle, the address setup for AH and the AH minimum pulse width can be assured. Figure 9.33 shows the access timing when the address cycle is three cycles. T ma1 T maw T ma2 T 2 T 1 B φ Address bus D15 to D0 D15 to D0 Address cycle Data cycle CSn LHWR LLWR AH RD DACK or EDACK BS RD/ WR Note: n = 3 to 7 Address Read data Address Write data Read Write Figure 9.33 Access Timing of 3 Address Cycles (ADDEX = 1) |
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