HD64F3670 RENESAS [Renesas Technology Corp], HD64F3670 Datasheet - Page 70

• Manufacturer Part Number: HD64F3670
• Description: Hitachi Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

3.2.4
IRR1 is a status flag register for direct transition interrupts, and
Bit Bit Name
7
6
5
4
3
2
1
0
Rev. 2.0, 03/02, page 46 of 298
IRRDT
IRRI3
IRRl0
Interrupt Flag Register 1 (IRR1)
Initial Value
0
0
1
1
0
0
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
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
designated signal edge is detected.
[Clearing condition]
When IRRI0 is cleared by writing 0
,54
,54
pin is designated for interrupt input and the
pin is designated for interrupt input and the
and
interrupt requests.