參數(shù)資料
型號(hào)： M34512M4
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
中文描述： 單芯片4位微機(jī)的CMOS
文件頁(yè)數(shù)： 17/80頁(yè)
文件大?。?/td> 760K
代理商： M34512M4
17
4512 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PRELIMINARY
Notice: This is not a final specification.
change.
Some parametric limits are subject to
Table 7 External interrupt activated conditions
Name
External 0 interrupt
External 1 interrupt
Input pin
INT0
INT1
Activated condition
When the next waveform is input to INT0 pin
Falling waveform (“H”
→
“L”)
Rising waveform (“L”
→
“H”)
Both rising and falling waveforms
When the next waveform is input to INT1 pin
Falling waveform (“H”
→
“L”)
Rising waveform (“L”
→
“H”)
Both rising and falling waveforms
Valid waveform
selection bit
I1
1
I1
2
I2
1
I2
2
Fig. 17 External interrupt circuit structure
EXTERNAL INTERRUPTS
The 4512 Group has two external interrupts (external 0 and exter-
nal 1). An external interrupt request occurs when a valid waveform
is input to an interrupt input pin (edge detection).
The external interrupts can be controlled with the interrupt control
registers I1 and I2.
0
1
I2
2
0
1
EXF1
I2
1
SNZI1
INT1
0
1
I1
2
Wakeup
Skip
0
1
EXF0
I1
1
SNZI0
INT0
Rising
Falling
One-sided edge
detection circuit
Both edges
detection circuit
External 0
interrupt
External 1
interrupt
Wakeup
Skip
Rising
Falling
One-sided edge
detection circuit
Both edges
detection circuit
This symbol represents a parasitic diode on the port.
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