參數(shù)資料
型號: M37272M8-517SP
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
中文描述: 單芯片8位CMOS微機隱蔽字幕解碼器和屏幕顯示控制器
文件頁數(shù): 11/131頁
文件大?。?/td> 1297K
代理商: M37272M8-517SP
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 00FB
16
.
Fig. 8.1.1 CPU Mode Register
b7b6 b5b4b3 b2b1b0
1
B
After reset
R W
0
CPU Mode Register
0, 1
2
3, 4
1
Name
Functions
Processor mode bits
(CM0, CM1)
0 0: Single-chip mode
0 1:
1 0:
Not available
1 1:
0: 0 page
1: 1 page
Fix these bits to 1.
1
Stack page selection
bit (CM2) (See note)
1
b1 b0
0
0
5
1
6
0
CPU mode register (CM) [Address 00FB
16
]
W
R W
R
R W
R W
R W
0: LOW drive
1: HIGH drive
0: Oscillating
1: Stopped
7
0
Internal system clock
selection bit
(CM7)
R W
Note:
This bit is set to 1 after the reset release.
X
COUT
drivability
selection bit (CM5)
0: X
IN
—X
OUT
selected
(high-speed mode)
1: X
CIN
—X
COUT
selected
(high-speed mode)
Main Clock (X
IN
—X
OUT
)
stop bit (CM6)
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