![](http://datasheet.mmic.net.cn/280000/M37753FFCFP_datasheet_16084053/M37753FFCFP_12.png)
12
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
MITSUBISHI MICROCOMPUTERS
M37753FFCFP
M37753FFCHP
SHINGLE-CHIP 16-BIT CMOS MICROCOMPUTER FLASH MEMORY VERSION
MEMORY AREA MODIFICATION FUNCTION
For the M37753FFCFP and the M37753FFCHP, the internal
memory’s size and address area can be changed by setting bits 2, 3,
4 (memory allocation select bits) of the particular function select reg-
ister 0 (see figure 5). Figure 4 shows the memory map when chang-
ing the internal memory area.
(Reserved area)
Internal RAM 3968 bytes
SFR
(ML
2
, ML
1
, ML
0
) = (0, 0, 0)
Flash memory size : 120 Kbytes
RAM size : 3968 bytes
00 0000
16
00 0080
16
00 0FFF
16
00 1000
16
Internal RAM 3968 bytes
SFR
Internal flash memory
60 Kbytes
Internal RAM 3072 bytes
SFR
SFR
(ML
2
, ML
1
, ML
0
) = (0, 0, 1)
Flash memory size : 92 Kbytes
RAM size : 3968 bytes
(ML
2
, ML
1
, ML
0
) = (0, 1, 0)
Flash memory size : 60 Kbytes
RAM size : 3072 bytes
(ML
2
, ML
1
, ML
0
) = (0, 1, 1)
Flash memory size : 56 Kbytes
RAM size : 3072 bytes
01 EFFF
16
01 FFFF
16
FF FFFF
16
00 0000
16
00 0080
16
00 0C7F
16
00 1000
16
00 FFFF
16
FF FFFF
16
00 0000
16
00 0080
16
00 0C7F
16
00 2000
16
00 FFFF
16
FF FFFF
16
Internal flash memory
48 Kbytes
Internal RAM 2048 bytes
SFR
(ML
2
, ML
1
, ML
0
) = (1, 0, 0)
Flash memory size : 48 Kbytes
RAM size : 2048 bytes
00 0000
16
00 0080
16
00 087F
16
00 4000
16
00 FFFF
16
FF FFFF
16
00 0000
16
00 0080
16
00 0FFF
16
00 8000
16
01 EFFF
16
01 FFFF
16
FF FFFF
16
ML
0
: Memory allocation select bit 0
ML
1
: Memory allocation select bit 1
ML
2
: Memory allocation select bit 2
Internal RAM 2048 bytes
SFR
(ML
2
, ML
1
, ML
0
) = (1, 0, 1)
Flash memory size : 32 Kbytes
RAM size : 2048 bytes
00 0000
16
00 0080
16
00 087F
16
00 8000
16
00 FFFF
16
FF FFFF
16
Internal flash memory
60 Kbytes
Internal flash memory
56 Kbytes
Internal RAM 2048 bytes
SFR
SFR
(ML
2
, ML
1
, ML
0
) = (1, 1, 0)
Flash memory size : 60 Kbytes
RAM size : 2048 bytes
00 0000
16
00 0080
16
00 087F
16
00 1000
16
00 FFFF
16
FF FFFF
16
Internal RAM 2048 bytes
(ML
2
, ML
1
, ML
0
) = (1, 1, 1)
Flash memory size : 56 Kbytes
RAM size : 2048 bytes
00 0000
16
00 0080
16
00 087F
16
00 2000
16
00 FFFF
16
FF FFFF
16
Note:
The internal flash memory area becomes the external memory area in the microprocessor mode.
Internal flash memory
120 Kbytes
(Reserved area)
Internal flash memory
92 Kbytes
Internal flash memory
56 Kbytes
Internal RAM 3072 bytes
Internal flash memory
32 Kbytes
Fig. 4 Memory allocation (Internal memory area modification by memory allocation select bits)
External memory area
External memory area
External memory area
External memory area
External memory area
External memory area
External memory area
External memory area
External memory area
External memory area
External memory area