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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) 285 Page - Renesas Technology Corp |
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H8SX/1663R 数据表(HTML) 285 Page - Renesas Technology Corp |
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285 / 1504 page  Section 9 Bus Controller (BSC) Rev. 2.00 Sep. 24, 2008 Page 253 of 1468 REJ09B0412-0200 9.6.5 Read Strobe ( RD) Timing The read strobe timing can be modified in area units by setting bits RDN7 to RDN0 in RDNCR to 1. Note that the RD timing with respect to the DACK and EDACK rising edge will change if the read strobe timing is modified by setting RDNn to 1 when the DMAC or the EXDMAC is used in the single address mode. Figure 9.22 shows an example of timing when the read strobe timing is changed in the basic bus 3- state access space. Bus cycle T 1 T 2 Address bus B φ CSn AS RD T 3 Data bus RD Data bus RDNn = 0 RDNn = 1 BS RD/ WR DACK or EDACK 1. n = 0 to 7 2. When DKC and EDKC = 0 Notes: Figure 9.22 Example of Read Strobe Timing |
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