参数资料
型号: M37221MAH-XXXFP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDSO42
封装: 0.450 INCH, 0.80 MM INCH, PLASTIC, SSOP-42
文件页数: 17/112页
文件大小: 1207K
代理商: M37221MAH-XXXFP
12
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
M37221M4H/M6H/M8H/MAH–XXXSP/FP
M37221EASP/FP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
8. FUNCTION BLOCK DESCRIPTION
8.1 CENTRAL PROCESSING UNIT (CPU)
This microcomputer uses the standard 740 Family instruction set.
Refer to the table of 740 Family addressing modes and machine
instructions or the SERIES 740 <Software> User’s Manual for de-
tails on the instruction set.
Availability of 740 Family instructions is as follows:
The FST and SLW instructions cannot be used.
The MUL, DIV, WIT and STP instructions can be used.
8.1.1 CPU Mode Register
The CPU mode register includes a stack page selection bit and inter-
nal system clock selection bit. The CPU mode register is allocated to
address 00FB16.
Fig. 8.1.1 CPU Mode Register
B
After reset
RW
0, 1
2
3 to 7
Indeterminate
Name
Functions
Fix these bits to “1.”
1
Stack page selection
bit (CM2) (See note)
0: 0 page
1: 1 page
CPU mode register (CM) [Address 00FB16]
R W
RW
R W
Note: This bit is set to “1” after the reset release.
b7b6b5 b4 b3 b2 b1 b0
CPU Mode Register
1
0
1
Fix these bits to “0.”
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