Z8F042ASJ020EG2156 Datasheet, PDF (77/280 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F082A Series
Product Specification
61
Bit
[4]
U0RXI
[3]
U0TXI
[2:1]
[0]
ADCI
Description (Continued)
UART 0 Receiver Interrupt Request
0 = No interrupt request is pending for the UART 0 receiver.
1 = An interrupt request from the UART 0 receiver is awaiting service.
UART 0 Transmitter Interrupt Request
0 = No interrupt request is pending for the UART 0 transmitter.
1 = An interrupt request from the UART 0 transmitter is awaiting service.
Reserved
These bits are reserved and must be programmed to 00.
ADC Interrupt Request
0 = No interrupt request is pending for the analog-to-digital Converter.
1 = An interrupt request from the Analog-to-Digital Converter is awaiting service.
Interrupt Request 1 Register
The Interrupt Request 1 (IRQ1) Register, shown in Table 36, stores interrupt requests for
both vectored and polled interrupts. When a request is presented to the interrupt controller,
the corresponding bit in the IRQ1 Register becomes 1. If interrupts are globally enabled
(vectored interrupts), the interrupt controller passes an interrupt request to the eZ8 CPU. If
interrupts are globally disabled (polled interrupts), the eZ8 CPU can read the Interrupt
Request 1 Register to determine if any interrupt requests are pending.
Table 36. Interrupt Request 1 Register (IRQ1)
Bit
Field
RESET
R/W
Address
7
PA7VI
0
R/W
6
PA6CI
0
R/W
5
PA5I
0
R/W
4
3
PA4I
PA3I
0
0
R/W
R/W
FC3H
2
PA2I
0
R/W
1
PA1I
0
R/W
0
PA0I
0
R/W
Bit
Description
[7]
PA7VI
Port A Pin 7 or LVD Interrupt Request
0 = No interrupt request is pending for GPIO Port A or LVD.
1 = An interrupt request from GPIO Port A or LVD.
[6]
PA6CI
Port A Pin 6 or Comparator Interrupt Request
0 = No interrupt request is pending for GPIO Port A or Comparator.
1 = An interrupt request from GPIO Port A or Comparator.
[5:0]
PA5I
Port A Pin x Interrupt Request
0 = No interrupt request is pending for GPIO Port A pin x.
1 = An interrupt request from GPIO Port A pin x is awaiting service.
Note: x indicates the specific GPIO port pin number (0–5).
PS022828-0413
PRELIMINARY
Interrupt Control Register Definitions