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15.6.2
User Program Mode
When set to the user program mode, this LSI can erase and program its flash memory by executing
a user program. Therefore, on-chip flash memory on-board programming can be performed by
providing a means of controlling FWE and supplying the write data on the board and providing a
write program in a part of the program area.
To select this mode, set the LSI to on-chip ROM enable modes 5, 6, and 7 and apply a high level
to the FWE pin. In this mode, the peripheral functions, other than flash memory, are performed the
same as in modes 5, 6, and 7.
Since the flash memory cannot be read while it is being programmed/erased, place a programming
program on external memory, or transfer the programming program to RAM area, and execute it
in the RAM.
Figure 15-9 shows the procedure for executing when transferred to on-chip RAM. During reset
start, starting from the user program mode is possible.
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