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Section 17 Flash Memory (0.18-(m F-ZTAT Version)
Rev. 3.00 Mar. 14, 2006 Page 604 of 804
REJ09B0104-0300
(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 17.10 shows the area of the on-chip
program to be downloaded.
H'FFBFFF
Programming/erasing
program entry
System use area
(15 bytes)
DPFR
(Return value: 1 byte)
FTDAR setting
FTDAR s 32 bytes
FTDAR s 4 kbytes
FTDAR s 16 bytes
Initialization program
entry
Initiali
programming program
or
Initiali
erasing program
RAM emulation area or
area that can be used
by user
Area that can be used
by user
Area to be
downloaded
(size: 4 kbytes)
Unusable area during
programming/erasing
Figure 17.10 RAM Map when Programming/Erasing is Executed
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