M32CSLASH86 datasheet(444/505 Pages) RENESAS

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Page 421

25. Flash Memory Version

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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.)

M32C/86 bảng dữ liệu(PDF) 444 Page - Renesas Technology Corp