20. Flash Memory Version
puorG92/C61M
page 332
854fo7002,03.raM21.1.veR
2110-1010B90JER
20.2 Memory Map
The flash memory contains the user ROM area and the boot ROM area (reserved area). Figures 20.1 to
20.3 show a block diagram of the flash memory. The user ROM area has space to store the MCU operation
program in single-chip mode and two 2-Kbyte spaces: the block A and B.
The user ROM area is divided into several blocks. The user ROM area can be rewritten in CPU rewrite,
standard serial I/O, parallel I/O, or CAN I/O mode.
However, to rewrite program in block 0 and 1 in CPU rewrite mode, set the FMR02 bit in the FMR0 register
to 1 (block 0, 1 rewrite enabled) and the FMR16 bit in the FMR1 register to 1 (blocks 0 to 5 rewrite enabled).
Also, to rewrite program in blocks 2 to 5 in CPU rewrite mode, set the FMR16 bit in the FMR1 register to 1
(blocks 0 to 5 rewrite enabled). When the PM10 bit in the PM1 register is set to 1 (data space access
enabled), blocks A and B can be available for use.
00FFFF
16
Block B :2K bytes
(2)
00F000
16
4K bytes
(4)
0FF000
16
0FFFFF
16
Boot ROM area
0FE000
16
0FC000
16
0FDFFF
16
0F8000
16
Block 2 : 16K bytes
0FBFFF
16
0F7FFF
16
0F0000
16
0FFFFF
16
User ROM area
Block A :2K bytes
(2)
Block 2 : 16K bytes
(5)
Block 3 : 32K bytes
(5)
Block 1 : 8K bytes
(3)
Block 0 : 8K bytes
(3)
00F7FF
16
00F800
16
NOTES:
1. To specify a block, use the maximum even address in the block.
2. Blocks A and B are enabled to use when the PM10 bit in the PM1
register is set to 1.
3. Blocks 0 and 1 are enabled for programs and erases when the
FMR02 bit in the FMR0 register is set to 1 and the FMR16 bit in
the FMR1 register is set to 1. (CPU rewrite mode only)
4. The boot ROM area is reserved. Do not access.
5. Blocks 2 and 3 are enabled for programs and erases when the
FMR16 bit in the FMR1 register is set to 1. (CPU rewrite mode
only)
(Data space)
(Program space)
Figure 20.1 Flash Memory Block Diagram (ROM capacity 64 Kbytes)
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