Z8F082ASJ020EG Datasheet, PDF (85/282 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F082A Series
Product Specification
68
Shared Interrupt Select Register
The Shared Interrupt Select (IRQSS) Register, shown in Table 48, determines the source
of the PADxS interrupts. The Shared Interrupt Select Register selects between Port A and
alternate sources for the individual interrupts.
Because these shared interrupts are edge-triggered, it is possible to generate an interrupt
just by switching from one shared source to another. For this reason, an interrupt must be
disabled before switching between sources.
Table 48. Shared Interrupt Select Register (IRQSS)
Bit
7
6
5
4
3
2
1
0
Field
PA7VS PA6CS
Reserved
RESET
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Address
FCEH
Bit
[7]
PA7VS
[6]
PA6CS
[5:0]
Description
PA7/LVD Selection
0 = PA7 is used for the interrupt for PA7VS interrupt request.
1 = The LVD is used for the interrupt for PA7VS interrupt request.
PA6/Comparator Selection
0 = PA6 is used for the interrupt for PA6CS interrupt request.
1 = The Comparator is used for the interrupt for PA6CS interrupt request.
Reserved
These bits are reserved and must be programmed to 000000.
PS022827-1212
PRELIMINARY
Interrupt Control Register Definitions