HD64336901G Renesas Technology, HD64336901G Datasheet - Page 78

• Manufacturer Part Number: HD64336901G
• Description: (HD64xxx Series) 16-BIT MICROCONTROLLER
• Manufacturer: Renesas Technology

3.2.5
IRR1 is a status flag register for direct transition interrupts, and IRQ3 and IRQ0 interrupt requests.
Rev. 1.00, 11/03, page 50 of 376
Bit
7
6
5, 4
3
2, 1
0
Bit Name
IRRDT
IRRI3
IRRl0
Interrupt Flag Register 1 (IRR1)
Initial
Value
0
0
All 1
0
All 0
0
R/W
R/W
R/W
R/W
Description
Direct Transfer Interrupt Request Flag
[Setting condition]
When a direct transfer is made by executing a SLEEP
instruction while DTON in SYSCR2 is set to 1.
[Clearing condition]
When IRRDT is cleared by writing 0
Reserved
This bit is always read as 0.
Reserved
These bits are always read as 1.
IRQ3 Interrupt Request Flag
[Setting condition]
When IRQ3 pin is designated for interrupt input and the
designated signal edge is detected
[Clearing condition]
When IRRI3 is cleared by writing 0
Reserved
These bits are always read as 0.
IRQ0 Interrupt Request Flag
[Setting condition]
When IRQ0 pin is designated for interrupt input and the
designated signal edge is detected
[Clearing condition]
When IRRI0 is cleared by writing 0