參數(shù)資料
型號: M37754S4CHP
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 16BIT CMOS MICROCOMPUTER
中文描述: 單芯片16位微機的CMOS
文件頁數(shù): 78/114頁
文件大?。?/td> 1116K
代理商: M37754S4CHP
78
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
MITSUBISHI MICROCOMPUTERS
M37754M8C-XXXGP, M37754M8C-XXXHP
M37754S4CGP, M37754S4CHP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
MEMORY MODIFICATION FUNCTION
The M37754M8C-XXXGP’s internal memory size and address area
can be modified by set of bit 2 (memory allocation select bit) of the
particular function select register 0. Figure 90 shows the memory al-
location when modifying the internal memory area.
When ordering a mask ROM, Mitsubishi Electric corp. produces the
mask ROM using the data within 60 Kbytes (between addresses
001000
16
to 00FFFF
16
). It is regardless of the selected ROM size
(refer to MASK ROM ORDER CONFIRMATION FORM). Therefore,
on the EPROM tendered for ordering a mask ROM, program data
“FF
16
” to addresses which correspond to the area out of the selected
ROM area.
Additionally, address 00FFFF
16
of the microcomputer corresponds
to the lowest address of the tendered EPROM.
00 0000
16
00 0080
16
00 087F
16
00 2000
16
00 FFFF
16
Internal ROM
60 Kbytes
Internal ROM
56 Kbytes
SFR
Internal RAM 2048 bytes
SFR
Internal RAM 2048 bytes
FF FFFF
16
00 0000
16
00 0080
16
00 087F
16
00 1000
16
00 FFFF
16
FF FFFF
16
External memory area
Memory allocation select bit = “0”
ROM size : 60 Kbytes
RAM size : 2048 bytes
Memory allocation select bit = “1”
ROM size : 56 Kbytes
RAM size : 2048 bytes
External memory area
Note : The internal ROM area becomes external memory area
in microprocessor mode.
Fig. 90 Memory allocation when modifying internal memory area with memory allocation select bit
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