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M32C/86 数据表(PDF) 106 Page - Renesas Technology Corp |
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M32C/86 数据表(HTML) 106 Page - Renesas Technology Corp |
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106 / 505 page ![]() Page 83 9 7 4 f o 5 0 0 2 , 8 0 . p e S 0 0 . 1 . v e R 0 0 1 0 - 4 0 2 0 B 9 0 J E R 9. Clock Generation Circuit ) T 6 8 / C 2 3 M , 6 8 / C 2 3 M ( p u o r G 6 8 / C 2 3 M Figure 9.11 Switching Procedure from On-chip Oscillator Clock to Main Clock Switch to the main clock Determine several times whether the CM23 bit is set to "0" (main clock oscillates) Set the CM22 bit to "0" (main clock does not stop) Set the MCD4 to MCD0 bits to "010002" (divide-by-8 mode) Set the CM21 bit to "0" (main clock as CPU clock source) MCD4 to MCD0 bits : Bits in the MCD Register CM23 to CM21 bits : Bits in the CM2 Register Yes No End |
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