Rev. 5.00, 12/03, page 718 of 1088
EB0
H'00000
EB1
H'01000
EB2
H'02000
EB3
H'03000
EB4
H'04000
EB5
H'05000
EB6
H'06000
EB7
H'07000
H'08000
H'7FFFF
Flash memory
(user MAT)
EB8 to EB15
H'FFDC00
H'FFBC00
H'FFEBFF
H'FFFBFF
On-chip RAM
This area is accessible as both a RAM
area and as a flash memory area.
Figure 17-77 Example of a RAM-Overlap Operation
Figure 17-77 shows an example of an overlap on block area EB0 of the flash memory.
Emulation is possible for a single area selected from among the eight areas, from EB0 to EB7, of
user MAT bank 0. The area is selected by the setting of the RAM2 to RAM0 bits in the RAMER
register.
(1) To overlap a part of the RAM on area EB0, to allow realtime programming of the data for this
area, set the RAMER register's RAMS bit to 1, and each of the RAM2 to RAM0 bits to 0.
(2) Realtime programming is carried out using the overlaid area of RAM.
In programming or erasing the user MAT, it is necessary to run a program that implements a series
of procedural steps, including the downloading of a on-chip program. In this process, set the
download area with FTDAR so that the overlaid RAM area and the area where the on-chip
program is to be downloaded do not overlap. An FTDAR setting of H'02 will cause part of the
tuned data area to overlap with part of the download area. When using the initial setting of
FTDAR, the data that is to be programmed must be saved beforehand in an area that is not used by
the system.
Figure 17-78 shows an example of programming of the data, after emulation has been completed,
to the EB0 area in the user MAT.
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