z8f1621 ZiLOG Semiconductor, z8f1621 Datasheet - Page 88

• Manufacturer Part Number: z8f1621
• Description: High Performance 8-bit Microcontrollers
• Manufacturer: ZiLOG Semiconductor

Table 36. Interrupt Edge Select Register (IRQES)
Table 37. Interrupt Port Select Register (IRQPS)
PS019921-0308
BITS
FIELD
RESET
R/W
ADDR
BITS
FIELD
RESET
R/W
ADDR
Interrupt Edge Select Register
Interrupt Port Select Register
PAD7S
IES7
7
7
C1ENL—Port C1 Interrupt Request Enable Low Bit
C0ENL—Port C0 Interrupt Request Enable Low Bit
The Interrupt Edge Select (IRQES) register
generated for the rising edge or falling edge on the selected GPIO Port input pin. The
Interrupt Port Select register selects between Port A and Port D for the individual inter-
rupts.
IESx—Interrupt Edge Select x
The minimum pulse width should be greater than 1 system clock to guarantee capture of
the edge triggered interrupt. Shorter pulses may be captured but not guaranteed.
0 = An interrupt request is generated on the falling edge of the PAx/PDx input.
1 = An interrupt request is generated on the rising edge of the PAx/PDx input.
where x indicates the specific GPIO Port pin number (0 through 7).
The Port Select (IRQPS) register
PAx/PDx interrupts. This register allows either Port A or Port D pins to be used as
interrupts. The Interrupt Edge Select register controls the active interrupt edge.
PAD6S
IES6
6
6
PAD5S
IES5
5
5
PAD4S
(Table
IES4
4
4
FCDH
FCEH
R/W
R/W
37) determines the port pin that generates the
0
0
(Table
PAD3S
IES3
3
3
36) determines whether an interrupt is
Z8 Encore! XP
PAD2S
IES2
2
2
Product Specification
PAD1S
IES1
1
1
®
Interrupt Controller
F64XX Series
PAD0S
IES0
0
0
74