HD6413003RVF RENESAS [Renesas Technology Corp], HD6413003RVF Datasheet - Page 102

• Manufacturer Part Number: HD6413003RVF
• Description: microcontroller (MCU)
• Manufacturer: RENESAS [Renesas Technology Corp]

5.2.3 IRQ Status Register (ISR)
ISR is an 8-bit readable/writable register that indicates the status of IRQ
requests.
ISR is initialized to H'00 by a reset and in hardware standby mode.
Bits 7 to 0—IRQ
IRQ
Bits 7 to 0
IRQ7F to IRQ0F
0
1
Note: n = 7 to 0
Bit
Initial value
Read/Write
Note:
0
interrupt requests.
*
Only 0 can be written, to clear flags.
7
IRQ7F
R/(W)
to IRQ
Description
[Clearing conditions]
0 is written in IRQnF after reading the IRQnF flag when IRQnF = 1.
IRQnSC = 0, IRQn input is high, and interrupt exception handling is carried out.
IRQnSC = 1 and IRQn interrupt exception handling is carried out.
[Setting conditions]
IRQnSC = 0 and IRQn input is low.
IRQnSC = 1 and IRQn input changes from high to low.
7
0
*
0
Flags (IRQ7F to IRQ0F): These bits indicate the status of IRQ
IRQ6F
R/(W) *
6
0
IRQ5F
R/(W) *
IRQ to IRQ flags
These bits indicate IRQ to IRQ interrupt request status
5
0
7
84
IRQ4F
R/(W) *
4
0
0
IRQ3F
R/(W) *
3
0
7
IRQ2F
R/(W) *
2
0
0
0
to IRQ
IRQ1F
R/(W) *
7
1
0
interrupt
(Initial value)
IRQ0F
R/(W) *
0
0
7
to