h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 115

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

5.3.4
ISR indicates the status of IRQ0 to IRQ5 interrupt requests.
Note:
Bit
7, 6
5
4
3
2
1
0
*
Bit Name

IRQ5F
IRQ4F
IRQ3F
IRQ2F
IRQ1F
IRQ0F
IRQ Status Register (ISR)
Only 0 can be written to clear the flag.
Initial
Value
All 0
0
0
0
0
0
0
R/W
R/W*
R/W*
R/W*
R/W*
R/W*
R/W*
R/W*
Description
Reserved
These bits are always read as 0.
[Setting conditions]
When the interrupt source selected by the ISCR
registers 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
Rev. 2.00 Dec. 05, 2005 Page 77 of 724
Section 5 Interrupt Controller
REJ09B0200-0200