HD64F3670 RENESAS [Renesas Technology Corp], HD64F3670 Datasheet - Page 67

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

3.2
Interrupts are controlled by the following registers.
3.2.1
IEGR1 selects the direction of an edge that generates interrupt requests of pins and
Bit Bit Name
7
6
5
4
3
2
1
0
Interrupt edge select register 1 (IEGR1)
Interrupt edge select register 2 (IEGR2)
Interrupt enable register 1 (IENR1)
Interrupt flag register 1 (IRR1)
Wakeup interrupt flag register (IWPR)
IEG3
IEG0
.
Register Descriptions
Interrupt Edge Select Register 1 (IEGR1)
Initial Value R/W
0
1
1
1
0
0
0
0
R/W
R/W
Description
Reserved
This bit is always read as 0.
Reserved
These bits are always read as 1.
IRQ3 Edge Select
0: Falling edge of
1: Rising edge of
Reserved
These bits are always read as 0.
IRQ0 Edge Select
0: Falling edge of
1: Rising edge of
,54
,54
,54
,54
pin input is detected
pin input is detected
pin input is detected
pin input is detected
Rev. 2.0, 03/02, page 43 of 298
and