Datasheet

Section 17 ROM
Rev.7.00 Feb. 14, 2007 page 635 of 1108
REJ09B0089-0700
Writing Overlap RAM Data in User Program Mode: When overlap RAM data is confirmed,
the RAMS bit is cleared, RAM overlap is released, and writes should actually be performed to the
flash memory.
When the programming control program is transferred to RAM, ensure that the transfer destination
and the overlap RAM do not overlap, as this will cause data in the overlap RAM to be rewritten.
Application program
Flash memory RAM
SCI
Overlap RAM
(programming data)
Programming data
Programming control
program
Execution state
Figure 17.38 Writing Overlap RAM Data in User Program Mode
17.13.6 Differences between Boot Mode and User Program Mode
Table 17.25 Differences between Boot Mode and User Program Mode
Boot Mode User Program Mode
Entire memory erase Yes Yes
Block erase No Yes
Programming control program
*
Program/program-verify Erase/erase-verify/program/
program-verify/emulation
Note: * To be provided by the user, in accordance with the recommended algorithm.