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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) 280 Page - Renesas Technology Corp |
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H8SX/1663R 数据表(HTML) 280 Page - Renesas Technology Corp |
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280 / 1504 page  Section 9 Bus Controller (BSC) Rev. 2.00 Sep. 24, 2008 Page 248 of 1468 REJ09B0412-0200 (2) 16-Bit 3-State Access Space Figures 9.18 to 9.20 show the bus timing of 16-bit 3-state access space. When accessing 16-bit access space, the upper byte data bus (D15 to D8) is used for even addresses, and the lower byte data bus (D7 to D0) is used for odd addresses. Wait cycles can be inserted. 1. n = 0 to 7 2. When RDNn = 0 3. When DKC and EDKC = 0 Notes: DACK or EDACK Valid Invalid T 1 T 2 T 3 Address CSn AS RD D15 to D8 D7 to D0 D15 to D8 D7 to D0 LHWR LLWR High level High-Z B φ Bus cycle Valid BS RD/ WR Read Write Figure 9.18 16-Bit 3-State Access Space Bus Timing (Byte Access for Even Address) |
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