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Section 24 Flash Memory
(1)
On-Chip RAM Address Map when Programming/Erasing is Executed
Parts of the procedure program that is made by the user, like download request,
programming/erasing procedure, and decision of the result, must be executed in the on-chip RAM.
Since the on-chip program to be downloaded is embedded in the on-chip RAM, make sure the on-
chip program and procedure program do not overlap. Figure 24.11 shows the area of the on-chip
program to be downloaded.
Area to be
downloaded
(size: 3 kbytes)
Unusable area during
programming/erasing
Figure 24.11 RAM Map when Programming/Erasing is Executed
Rev. 1.00 May 09, 2008 Page 748 of 954
REJ09B0462-0100
DPFR
(Return value: 1 byte)
System use area
(15 bytes)
Programming/
programming end/
erasing program entry
Initialization program
entry
Initialization +
programming +
programming end program
or
Initialization +
erasing program
Area that can be used
by user
FTDAR setting
FTDAR setting + address 16
FTDAR setting + address 32
FTDAR setting + 3 kbytes
H'FFEFFF
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