参数资料
型号: M37272MFH-XXXSP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP42
封装: 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-42
文件页数: 13/131页
文件大小: 1297K
代理商: M37272MFH-XXXSP
11
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37272M6H/M8H/MAH/MFH–XXXSP/FP
M37272E8SP/FP, M37272EFSP/FP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
8. FUNCTIONAL 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.
Machine-resident 740 Family instructions are as follows:
The FST, SLW instruction cannot be used.
The MUL, DIV, WIT and STP instructions can be used.
8.1.1 CPU Mode Register
The CPU mode register contains the stack page selection bit and
internal system clock selection bit. The CPU mode register is allo-
cated at address 00FB16.
Fig. 8.1.1 CPU Mode Register
b7 b6 b5 b4 b3 b2 b1 b0
B
After reset RW
CPU Mode Register
0, 1
2
3, 4
0
1
Name
Functions
Processor mode bits
(CM0, CM1)
0 0: Single-chip mode
0 1:
1 0:
Not available
1 1:
Fix these bits to 1.
1
Stack page selection
bit (CM2) (See note)
1
b1 b0
0: 0 page
1: 1 page
1
0
51
60
CPU mode register (CM) [Address 00FB16]
W
RW
R
RW
0: LOW drive
1: HIGH drive
0: Oscillating
1: Stopped
70
Internal system clock
selection bit
(CM7)
RW
Note: This bit is set to 1 after the reset release.
XCOUT drivability
selection bit (CM5)
0: XIN—XOUT selected
(high-speed mode)
1: XCIN—XCOUT selected
(high-speed mode)
Main Clock (XIN—XOUT)
stop bit (CM6)
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