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M16C/5L Group, M16C/56 Group
Table 26.2
Flash Memory Rewrite Modes Overview
Flash Memory
Rewrite Mode
Function
Areas which can
be rewritten
CPU operating
mode
ROM programmer None
On-board rewrite
R01UH0127EJ0110 Rev.1.10
Sep 01, 2011
CPU Rewrite Mode
The flash memory is rewritten
when the CPU executes software
commands.
EW0 mode:
Rewritable in RAM
EW1 mode:
Rewritable in the flash memory
Program ROM 1, program ROM 2,
and data flash
Single-chip mode
Available
Standard Serial I/O Mode
The flash memory is rewritten
using a dedicated serial
programmer.
Standard serial I/O mode 1:
Clock synchronous serial I/O
Standard serial I/O mode 2:
2-wire clock asynchronous
serial I/O
Program ROM 1, program ROM 2,
and data flash
Boot mode
Serial programmer
Available
26. Flash Memory
Parallel I/O Mode
The flash memory is
rewritten using a
dedicated parallel
programmer.
Program ROM 1,
program ROM 2, and
data flash
Pararell I/O mode
Parallel programmer
Unavailable
Page 649 of 803
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