HD6433935 Hitachi, HD6433935 Datasheet - Page 75

• Manufacturer Part Number: HD6433935
• Description: 8-Bit MICROCONTROLLER
• Manufacturer: Hitachi

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:
1. IRQ edge select register (IEGR)
IEGR is an 8-bit read/write register used to designate whether pins IRQ
IRQ
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
0
signal used to interface to the FLEX™ decoder, are set to rising edge sensing or falling edge
*
Interrupt Control Registers
4
Write is enabled only for writing of 0 to clear a flag.
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
Initial Value
H'E0
H'00
H'00
H'20
H'00
H'00
H'00
IEG2
R/W
2
0
4
to IRQ
IEG1
R/W
1
, and the internal
1
0
Address
H'FFF2
H'FFF3
H'FFF4
H'FFF6
H'FFF7
H'FFF9
H'FF90
(initial value)
IEG0
R/W
0
0
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