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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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H8S/2218 数据表(PDF) 180 Page - Renesas Technology Corp |
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H8S/2218 数据表(HTML) 180 Page - Renesas Technology Corp |
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180 / 750 page  Section 6 Bus Controller Rev.6.00 Jun. 03, 2008 Page 132 of 698 REJ09B0074-0600 Bus cycle T 1 Unchanged Address bus* AS* RD* HWR, LWR* Data bus* Note: * Supported only by the H8S/2218 Group. φ High High High High-impedance state Figure 6.5 Pin States during On-Chip Memory Access 6.5.2 On-Chip Peripheral Module Access Timing The on-chip peripheral modules are accessed in two states except on-chip USB and RTC. The data bus is either 8 bits or 16 bits wide, depending on the particular internal I/O register being accessed. Figure 6.6 shows the access timing for the on-chip peripheral modules. Figure 6.7 shows the pin states. T 1 T 2 φ Internal address bus Bus cycle Address Read data Write data Internal read signal Internal data bus Internal write signal Internal data bus Read access Write access Figure 6.6 On-Chip Peripheral Module Access Cycle |
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