參數(shù)資料
型號(hào)： M37271EFSP
廠商： Mitsubishi Electric Corporation
英文描述： Single Chip 8 Bits Microcomputer(8位單片機(jī))
中文描述： 單芯片8位單片機(jī)（8位單片機(jī)）
文件頁(yè)數(shù)： 77/97頁(yè)
文件大小： 1364K
代理商： M37271EFSP
MITSUBISHI MICROCOMPUTERS
M37271MF-XXXSP
M37271EF-XXXSP, M37271EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
77
Fig. 88. Setting value of interrpt interval determination control
register and measuring interval
Fig. 86. Block diagram of interrupt interval determination circuit
Fig. 87. Structure of interrupt interval determination control
register
RE
5
0
0
1
1
RE
i
0
1
0
1
INT1 or INT2 input
Count interval
RE
i
:
Bit i (i = 3, 4) of interrupt interval determination
control register (address 0211
16
)
8
Data bus
Control
circuit
Connected to
black colored
side at rest.
Selection gate :
(Address 0211
16
)
32
μ
s
RE
1
16
μ
s
8-bit binary up counter (8)
Interrupt interval determination register(8)
RE
0
8
INT1 (Note)
RE
2
INT2 (Note)
Note:
The pulse width of external interrupt INT1 and INT2 needs 5 or more machine cycles.
RE: Input interval determination control register
0
7
Interrupt interval determination
control register
(RE : address 0212
16
)
Interrupt interval determination
circuit operation control bit
0 : Stopped
1 : Operating
Reference clock control selection
bit
(at f(X
IN
) = 8MHz)
0 : 32
μ
s
1 : 16
μ
s
External interrupt input pin
selection bit
0 : INT1 input
1 : INT2 input
INT1 pin input polarity switch bit
0 : Positive polarity input
1 : Negative polarity input
INT2 pin input polarity switch bit
0 : Positive polarity input
1 : Negative polarity input
Interrupt interval determination mode
switch bit
0 : Interrupt interval determination
mode
1 : Pulse width determination mode
INT3 pin input polarity switch bit
0 : Positive polarity input
1 : Negative polarity input
A-D conversion · INT3 interrupt
source selection bit
0 : INT3 interrupt
1 : A-D conversion interrupt
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參數(shù)描述
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