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M32C/86 데이터시트(PDF) 444 Page - Renesas Technology Corp |
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M32C/86 데이터시트(HTML) 444 Page - Renesas Technology Corp |
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444 / 505 page ![]() Page 421 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 25. Flash Memory Version ) T 6 8 / C 2 3 M , 6 8 / C 2 3 M ( p u o r G 6 8 / C 2 3 M 25.5 Parallel I/O Mode In parallel I/O mode, the user ROM area and the boot ROM area can be rewritten by a parallel programmer supporting the M32C/86 Group (M32C/86, M32C/86T). Contact your parallel programmer manufacturer for more information on the parallel programmer. Refer to the user's manual included with your parallel pro- grammer for instructions. 25.5.1 Boot ROM Area An erase block operation in the boot ROM area is applied to only one 4-Kbyte block. The rewrite control program in standard serial I/O mode is written in the boot ROM area before shipment. Do not rewrite the boot ROM area if using the serial programmer. In parallel I/O mode, the boot ROM area is located in addresses FFF00016 to FFFFFF16. Rewrite this address range only if rewriting the boot ROM area. (Do not access addresses other than addresses FFF00016 to FFFFFF16.) 25.5.2 ROM Code Protect Function The ROM code protect function prevents the flash memory from being read and rewritten in parallel I/O mode. (Refer to 25.2 Functions to Prevent Flash Memory from Rewriting.) |
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