hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 121

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

3.3.2
Table 3.3 lists the registers that control interrupts.
Table 3.3
Name
IRQ edge select register
Interrupt enable register 1
Interrupt enable register 2
Interrupt request register 1
Interrupt request register 2
Wakeup interrupt request register
Wakeup edge select register
Note: * Write is enabled only for writing of 0 to clear a flag.
IRQ Edge Select Register (IEGR)
IEGR is an 8-bit read/write register used to designate whether pins
are set to rising edge sensing or falling edge sensing. For the IRQAEC pin edge sensing
specifications, see section 9.7, Asynchronous Event Counter (AEC).
Bits 7 to 5—Reserved
Bits 7 to 5 are reserved: they are always read as 1 and cannot be modified.
Bit
Initial value
Read/Write
Interrupt Control Registers
Interrupt Control Registers


7
1


6
1


Abbreviation
IEGR
IRR1
IRR2
IWPR
WEGR
IENR1
IENR2
5
1
IEG4
R/W
4
0
Rev. 7.00 Mar 10, 2005 page 79 of 652
R/W
R/W *
R/W *
R/W *
R/W
R/W
R/W
R/W
IEG3
R/W
3
0
I R Q
Section 3 Exception Handling
Initial Value
—
—
—
—
—
H'00
H'00


W
2
4
,
I R Q
3
,
IEG1
R/W
I R Q
REJ09B0042-0700
1
0
1
, and
Address
H'FFF2
H'FFF6
H'FFF7
H'FFF9
H'FF90
H'FFF3
H'FFF4
IEG0
R/W
I R Q
0
0
0