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M16C/26 数据表(PDF) 19 Page - Renesas Technology Corp |
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M16C/26 数据表(HTML) 19 Page - Renesas Technology Corp |
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19 / 239 page  Reset 13 Renesas Technology Corp. M16C/26 Group SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER Under development Preliminary Specifications Rev. 0.9 Specifications in this manual are tentative and subject to change. Figure 1.5.2. Reset sequence Software reset When the PM0 register's PM03 bit is set “1” (microcomputer reset), the CPU, SFR, and pins of the microcomputer are initialized similar to a hardware reset. After reset, the program is executed starting from the address indicated by the reset vector. Figure 1.5.2 shows the reset sequence and Figure 1.5.3 shows the status of the CPU registers after reset. Figure 1.5.1. Example reset circuit More than 2ms are needed More than 20 cycles are needed BCLK Address Single chip mode XIN RESET Content of reset vector BCLK 28cycles FFFFE16 FFFFC16 VCC RESET VCC RESET VCC 0V 0V More than 20 cycles of XIN +2 ms are needed. Equal to or less than 0.2VCC Equal to or less than 0.2VCC Recommended operating voltage |
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