hd66100 Renesas Electronics Corporation., hd66100 Datasheet - Page 82

• Manufacturer Part Number: hd66100
• Description: H8/3867 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.
1. IRQ edge select register (IEGR)
IEGR is an 8-bit read/write register used to designate whether pins IRQ
edge sensing or falling edge sensing.
Bits 7 to 5: Reserved bits
Bits 7 to 5 are reserved: they are always read as 1 and cannot be modified.
Bit 4: IRQ
Bit 4 selects the input sensing of the IRQ
Bit 4
IEG4
0
1
Bit
Initial value
Read/Write
Interrupt Control Registers
4
edge select (IEG4)
Interrupt Control Registers
Description
Falling edge of IRQ
Rising edge of IRQ
—
—
7
1
—
—
6
1
4
4
and ADTRG pin input is detected
and ADTRG pin input is detected
—
—
Abbreviation
IEGR
IENR1
IENR2
IRR1
IRR2
IWPR
WEGR
4
5
1
pin and ADTRG pin.
IEG4
R/W
4
0
R/W
R/W
R/W
R/W
R/W*
R/W*
R/W*
R/W
IEG3
R/W
3
0
IEG2
R/W
Initial Value
H'E0
H'00
H'00
H'20
H'00
H'00
H'00
2
0
4
to IRQ
IEG1
R/W
0
1
0
are set to rising
(initial value)
Address
H'FFF2
H'FFF3
H'FFF4
H'FFF6
H'FFF7
H'FFF9
H'FF90
IEG0
R/W
0
0
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