m30833fjgp Renesas Electronics Corporation., m30833fjgp Datasheet - Page 438

• Manufacturer Part Number: m30833fjgp
• Description: Renesas 16/32-bit Single-chip Microcomputer M16c Family / M32c/80 Series
• Manufacturer: Renesas Electronics Corporation.

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25.5 Parallel I/O Mode
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In parallel I/O mode, the user ROM area and the boot ROM area (see Figure 25.1) can be rewritten by a
parallel programmer supporting the M32C/83 Group. 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
25.5.2 ROM Code Protect Function
25.5.3 Precautions on Parallel I/O Mode
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Within the boot ROM area, 8K bytes equal one 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 a serial programmer.
In parallel I/O mode, the boot ROM area is allocated to addresses 0FFE000
only this address range when rewriting the boot ROM area. (Do not access addresses other than ad-
dresses 0FFE000
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.)
Standard serial I/O mode cannot be used if rewriting the boot ROM area in parallel I/O mode. (Refer to
25.4 Standard Serial I/O Mode.)
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25. Flash Memory Version
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