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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/2240 数据表(PDF) 189 Page - Renesas Technology Corp |
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H8S/2240 数据表(HTML) 189 Page - Renesas Technology Corp |
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189 / 818 page  Section 6 Bus Controller Rev.3.00 Mar. 26, 2007 Page 147 of 772 REJ09B0355-0300 Table 6.3 shows the bus specifications for each basic bus interface area. Table 6.3 Bus Specifications for Each Area (Basic Bus Interface) ABWCR ASTCR WCRH WCRL Bus Specifications (Basic Bus Interface) ABWn ASTn Wn1 Wn0 Bus Width Access States Program Wait States 00 —— 16 2 0 10 0 3 0 11 10 2 13 10 —— 82 0 10 0 3 0 11 10 2 13 6.3.3 Memory Interfaces The H8S/2245 Group memory interfaces comprise a basic bus interface that allows direct connection of ROM, SRAM, and so on; and a burst ROM interface that allows direct connection of burst ROM. An area for which the basic bus interface is designated functions as normal space, and an area for which the burst ROM interface is designated functions as burst ROM space. |
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