Z8F042ASJ020EG2156 Datasheet, PDF (83/280 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F082A Series
Product Specification
67
Bit
7
Field
RESET
0
R/W
R/W
Address
Table 46. IRQ2 Enable Low Bit Register (IRQ2ENL)
6
5
Reserved
0
0
R/W
R/W
4
3
C3ENL
0
0
R/W
R/W
FC8H
2
C2ENL
0
R/W
1
C1ENL
0
R/W
0
C0ENL
0
R/W
Bit
[7:4]
[3]
C3ENL
[2]
C2ENL
[1]
C1ENL
[0]
C0ENL
Description
Reserved
These bits are reserved and must be programmed to 0000.
Port C3 Interrupt Request Enable Low Bit
Port C2 Interrupt Request Enable Low Bit
Port C1 Interrupt Request Enable Low Bit
Port C0 Interrupt Request Enable Low Bit
Interrupt Edge Select Register
The Interrupt Edge Select (IRQES) Register, shown in Table 47, determines whether an
interrupt is generated for the rising edge or falling edge on the selected GPIO Port A input
pin.
Table 47. Interrupt Edge Select Register (IRQES)
Bit
Field
RESET
R/W
Address
7
IES7
0
R/W
6
IES6
0
R/W
5
IES5
0
R/W
4
3
IES4
IES3
0
0
R/W
R/W
FCDH
2
IES2
0
R/W
1
IES1
0
R/W
0
IES0
0
R/W
Bit
Description
[7:0]
IESx
Interrupt Edge Select x
0 = An interrupt request is generated on the falling edge of the PAx input.
1 = An interrupt request is generated on the rising edge of the PAx input.
Note: x indicates the specific GPIO port pin number (0–7).
PS022828-0413
PRELIMINARY
Interrupt Control Register Definitions