Rev. 1.0, 02/00, page 1112 of 1141
H'FFF2: IRQ Status Register IRQR: Interrupt Controller
0
0
1
0
R/(W)*
2
0
R/(W)*
3
0
4
0
R/(W)*
5
0
0
7
R/(W)*
R/(W)*
R/(W)*
IRQ5F
IRQ4F
IRQ3F
IRQ2F
IRQ1F
IRQ0F
0
6
Note: * Only 0 can be written to clear the flag.
IRQ5 to IRQ0 flag
[Clearing conditions]
Cleared by reading IRQnF set to 1, then writing 0 in IRQnF
When IRQn interrupt exception handling is executed
[Setting conditions]
(1) When a falling edge occurs in IRQn input while falling edge detection is set (IRQnEG = 0)
(2) When a rising edge occurs in IRQn input while rising edge detection is set (IRQnEG = 0)
(3) When a falling or rising edge occurs in IRQ0 input while both-edge detection is set (IRQ0EG1 = 1)
0
1
(n = 5 to 0)
Bit
Initial value
R/W
:
:
:
(Initial value)
H'FFF3: Interrupt Control Register A ICRA: Interrupt Controller
H'FFF4: Interrupt Control Register B ICRB: Interrupt Controller
H'FFF5: Interrupt Control Register C ICRC: Interrupt Controller
H'FFF6: Interrupt Control Register D ICRD: Interrupt Controller
0
0
1
0
R/W
2
0
R/W
3
0
4
0
R/W
0
R/W
5
0
7
ICR4
ICR3
ICR2
ICR1
ICR0
0
R/W
ICR7
R/W
R/W
R/W
ICR6
ICR5
6
Interrupt control level
Corresponding interrupt source is control level 0 (non-priority)
(Initial value)
Corresponding interrupt source is control level 1 (priority)
0
1
(n = 7 to 0)
Bit
Initial value
R/W
:
:
: