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2. APPLICATION
MITSUBISHI MICROCOMPUTER
3819 Group
2.6 Interrupt interval determination function
3819 Group USER’S MANUAL
Fig. 2.6.3 Structure of Interrupt edge selection register
Fig. 2.6.4 Structure of Interrupt request register 1
Interrupt request register 1
b7 b6 b5 b4 b3 b2 b1 b0
B
Function
At reset
RW
0
1
2
3
0
Interrupt request reigster 1 (IREQ1) [Address:3C16]
Name
INT0 interrupt request bit
INT1/ZCR interrupt request bit
0 : No interrupt request
1 : Interrupt request
0 : No interrupt request
1 : Interrupt request
0 : No interrupt request
1 : Interrupt request
0 : No interrupt request
1 : Interrupt request
Serial I/O 1 interrupt request
bit
Serial I/O automatic transfer
interrupt request bit
q
T
4
5
6
7
0
Serial I/O 2 interrupt request
bit
Timer 1 interrupt request bit
0 : No interrupt request
1 : Interrupt request
Serial I/O 3 interrupt request
bit
Timer 2 interrupt request bit
0 : No interrupt request
1 : Interrupt request
0 : No interrupt request
1 : Interrupt request
0 : No interrupt request
1 : Interrupt request
T
T "0" is set by software, but not "1."
INT2 interrupt request bit
Remote control/counter
overflow interrupt request bit
q
Interrupt edge selection register
b7 b6 b5 b4 b3 b2 b1 b0
b
Function
At reset
RW
0
1
2
3
0
Interrupt edge selecton reigster (INTEDGE) [Address:3A16]
Name
INT0 interrupt edge selection
bit
INT1/ZCR interrupt edge
selection bit
INT2 interrupt edge selection
bit
0 : Falling edge active
1 : Rising edge active
0 : Falling edge active
1 : Rising edge active
0 : Falling edge active
1 : Rising edge active
0 : Falling edge active
1 : Rising edge active
INT3 interrupt edge selection
bit
4
0
0 : Falling edge active
1 : Rising edge active
INT4 interrupt edge selection
bit
5
6
7
CNTR0 pin active edge switch
bit
0
CNTR1 pin active edge switch
bit
INT4/A-D conversion interrupt
switch bit
0 : INT4 interrupt
1 : A-D conversion interrupt
0 : Falling edge active
1 : Rising edge active
0 : Falling edge active
1 : Rising edge active