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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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H8/3022 数据表(PDF) 82 Page - Renesas Technology Corp |
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H8/3022 数据表(HTML) 82 Page - Renesas Technology Corp |
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82 / 712 page  3. MCU Operating Modes Rev.2.00 Mar. 22, 2007 Page 58 of 684 REJ09B0352-0200 Modes 5 and 6 are externally expanded mode that enables access to external memory and peripheral devices and also enables access to the on-chip ROM. Mode 5 supports a maximum address space of 1 Mbyte. Mode 6 supports a maximum address space of 16 Mbyte. Mode 7 is single-chip modes that operate using the on-chip ROM, RAM, and registers. All I/O ports are available. Mode 7 is an advanced mode with a maximum address space of 1 Mbyte. The H8/3022 Group can be used only in modes 1, 3, or 5 to 7. The inputs at the mode pins must select one of these seven modes. The inputs at the mode pins must not be changed during operation. 3.1.2 Register Configuration The H8/3022 Group has a mode control register (MDCR) that indicates the inputs at the mode pins (MD 2 and MD0), and a system control register (SYSCR). Table 3.2 summarizes these registers. Table 3.2 Registers Address* Name Abbreviation R/W Initial Value H'FFF1 Mode control register MDCR R Undetermined H'FFF2 System control register SYSCR R/W H'0B Note: * The lower 16 bits of the address are indicated. |
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