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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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SH7708 数据表(PDF) 308 Page - Renesas Technology Corp |
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SH7708 数据表(HTML) 308 Page - Renesas Technology Corp |
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308 / 633 page  290 When the entire 32-Mbyte memory space is used as IC memory card interface space, the common memory/attribute memory switching signal REG is generated using a port, etc. If 16-Mbytes or less of memory space is sufficient, using 16M bytes of memory space as common memory space and 16 Mbytes as attribute memory space enables the A24 pin to be used for the REG signal. I/O space Area 5: H'14000000 Area 5: H'16000000 Area 6: H'18000000 Area 6: H'1A000000 Area 5: H'14000000 Area 5: H'15000000 H'16000000 Area 6: H'18000000 Area 6: H'19000000 Area 6: H'1A000000 H'1B000000 Attribute memory Common memory Attribute memory Common memory I/O space Up to 16-Mbyte capacity (REG = A24) 32-Mbyte capacity (REG = I/O port) Common memory/ attribute memory Common memory/ attribute memory Figure 10.46 PCMCIA Space Allocation |
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