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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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H8/3008 数据表(PDF) 97 Page - Renesas Technology Corp |
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H8/3008 数据表(HTML) 97 Page - Renesas Technology Corp |
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97 / 686 page  2. CPU Rev.4.00 Aug. 20, 2007 Page 53 of 638 REJ09B0395-0400 Address bus Internal read signal Internal data bus Internal write signal Address Internal data bus φ T state Bus cycle 1 T state 2 T state 3 Read access Write access Write data Read data Figure 2.17 Access Cycle for On-Chip Supporting Modules T , , , AS φ 1 T2 Address bus D to D 15 0 RD HWR LWR High High impedance T3 Address Figure 2.18 Pin States during Access to On-Chip Supporting Modules 2.9.4 Access to External Address Space The external address space is divided into eight areas (areas 0 to 7). Bus-controller settings determine whether each area is accessed via an 8-bit or 16-bit data bus, and whether it is accessed in two or three states. For details see section 6, Bus Controller. |
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