r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 146

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 5 Interrupt Controller
5.3.5
ISR is an IRQ15 to IRQ0 interrupt request flag register.
Notes: 1. Only 0 can be written, to clear the flag.
Rev. 1.00 Sep. 19, 2008 Page 118 of 1270
REJ09B0466-0100
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Bit Name
IRQ15F*
IRQ14F*
IRQ13F*
IRQ12F*
IRQ11F*
IRQ10F*
IRQ9F*
IRQ8F*
IRQ7F
IRQ6F
IRQ5F
IRQ4F
IRQ3F
IRQ2F
IRQ1F
IRQ0F
2. These bits are reserved in the H8S/2424 Group.
IRQ Status Register (ISR)
2
2
2
2
2
2
2
2
Initial Value
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Description
[Setting condition]
When the interrupt source selected by ISCR
occurs
[Clearing conditions]
•
•
•
•
Cleared by reading IRQnF flag when IRQnF =
1, then writing 0 to IRQnF flag
When interrupt exception handling is executed
when low-level detection is set and IRQn input
is high
When IRQn interrupt exception handling is
executed when falling, rising, or both-edge
detection is set
When the DTC is activated by an IRQn
interrupt, and the DISEL bit in MRB of the DTC
is cleared to 0