參數(shù)資料
型號： M34554MC-XXXFP
元件分類： 微控制器/微處理器
英文描述： 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP64
封裝： 14 X 14 MM, 0.80 MM PITCH, PLASTIC, QFP-64
文件頁數(shù)： 59/137頁
文件大小： 1606K
代理商： M34554MC-XXXFP
28
4554 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
(3) External interrupt control registers
Interrupt control register I1
Register I1 controls the valid waveform for the external 0 inter-
rupt. Set the contents of this register through register A with the
TI1A instruction. The TAI1 instruction can be used to transfer the
contents of register I1 to register A.
Table 8 External interrupt control register
Interrupt control register I2
Register I2 controls the valid waveform for the external 1 inter-
rupt. Set the contents of this register through register A with the
TI2A instruction. The TAI2 instruction can be used to transfer the
contents of register I2 to register A.
Notes 1: “R” represents read enabled, and “W” represents write enabled.
2: When the contents of these bits (I12 , I13, I22 and I23) are changed, the external interrupt request flag (EXF0, EXF1) may be set.
I13
I12
I11
I10
INT0 pin input control bit (Note 2)
Interrupt valid waveform for INT0 pin/
return level selection bit (Note 2)
INT0 pin edge detection circuit control bit
INT0 pin Timer 1 count start synchronous
circuit selection bit
Interrupt control register I1
R/W
TAI1/TI1A
at power down : state retained
at reset : 00002
INT0 pin input disabled
INT0 pin input enabled
Falling waveform/“L” level (“L” level is recognized with the SNZI0
instruction)
Rising waveform/“H” level (“H” level is recognized with the SNZI0
instruction)
One-sided edge detected
Both edges detected
Timer 1 count start synchronous circuit not selected
Timer 1 count start synchronous circuit selected
0
1
0
1
0
1
0
1
I23
I22
I21
I20
INT1 pin input control bit (Note 2)
Interrupt valid waveform for INT1 pin/
return level selection bit (Note 2)
INT1 pin edge detection circuit control bit
INT1 pin Timer 3 count start synchronous
circuit selection bit
Interrupt control register I2
R/W
TAI2/TI2A
at power down : state retained
at reset : 00002
INT1 pin input disabled
INT1 pin input enabled
Falling waveform/“L” level (“L” level is recognized with the SNZI1
instruction)
Rising waveform/“H” level (“H” level is recognized with the SNZI1
instruction)
One-sided edge detected
Both edges detected
Timer 3 count start synchronous circuit not selected
Timer 3 count start synchronous circuit selected
0
1
0
1
0
1
0
1
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