Renesas M16C/64A Series User Manual page 691

M16C/64A Group
Table 30.2 Flash Memory Rewrite Modes Overview
Flash Memory
Rewrite Mode
Function
Areas which can
be rewritten
CPU operating
mode
ROM programmer None
On-board rewrite
R01UH0136EJ0210 Rev.2.10
Jul 31, 2012
CPU Rewrite Mode
The flash memory is rewritten
when the CPU executes software
commands.
EW0 mode:
Rewritable in areas other than
the flash memory
EW1 mode:
Rewritable in the flash memory
Program ROM 1, program ROM 2,
and data flash
Single-chip mode
Memory expansion mode (EW0
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
30. 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
Parallel I/O mode
Parallel programmer
Unavailable
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