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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) 336 Page - Renesas Technology Corp |
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H8SX/1663R 数据表(HTML) 336 Page - Renesas Technology Corp |
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336 / 1504 page  Section 9 Bus Controller (BSC) Rev. 2.00 Sep. 24, 2008 Page 304 of 1468 REJ09B0412-0200 (1) When DDS = 1 or EDDS = 1 A fast-page access is performed regardless of the bus master, only according to the address. The DACK and EDACK signals are asserted at the start of the Tc1 cycle. Figure 9.58 shows the output timing example of the DACK and EDACK signals when DDS = 1 or EDDS = 1. T p T r T c1 T c2 Address bus B φ RAS LUCAS LLCAS WE OE (RD) WE OE (RD) Data bus High Row address Column address High Read Write Data bus DACK or EDACK BS RD/ WR DKC, EDKC = 1 DKC, EDKC = 0 Figure 9.58 Output Timing Example of DACK and EDACK when DDS = 1 or EDDS = 1 (RAST = 0, CAST = 0) |
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