z8f0822 ZiLOG Semiconductor, z8f0822 Datasheet - Page 75
z8f0822
Manufacturer Part Number
z8f0822
Description
High Performance 8-bit Microcontrollers
Manufacturer
ZiLOG Semiconductor
Datasheet
1.Z8F0822.pdf
(264 pages)
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Table 26. Interrupt Request 1 Register (IRQ1)
PS022517-0508
BITS
FIELD
RESET
R/W
ADDR
Interrupt Request 1 Register
7
PA7I
U0RXI—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.
U0TXI—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.
I 2 CI— I
0 = No interrupt request is pending for the I
1 = An interrupt request from the I
SPII—SPI Interrupt Request
0 = No interrupt request is pending for the SPI.
1 = An interrupt request from the SPI is awaiting service.
ADCI—ADC Interrupt Request
0 = No interrupt request is pending for the ADC.
1 = An interrupt request from the ADC is awaiting service.
The Interrupt Request 1 (IRQ1) Register
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 reads the IRQ1
Register to determine if any interrupt requests are pending.
PAxI—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.
Where x indicates the specific GPIO Port pin number (0 through 7).
6
2
PA6I
C Interrupt Request
5
PA5I
4
PA4I
2
C is awaiting service.
FC3H
R/W
(Table
0
3
2
C.
PA3I
26) stores interrupt requests for both
2
Z8 Encore! XP
PA2I
Product Specification
PA1I
1
®
Interrupt Controller
F0822 Series
PA0I
0
62
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