z8f1601 ZiLOG Semiconductor, z8f1601 Datasheet - Page 68
z8f1601
Manufacturer Part Number
z8f1601
Description
Z8 Encore!? Microcontroller With Flash Memory And 10-bit A/d Converter
Manufacturer
ZiLOG Semiconductor
Datasheet
1.Z8F1601.pdf
(246 pages)
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Table 25. Interrupt Request 2 Register (IRQ2)
PS017609-0803
RESET
FIELD
ADDR
BITS
R/W
Interrupt Request 2 Register
R/W
T3I
7
0
The Interrupt Request 2 (IRQ2) register (Table 25) stores interrupt requests for both vec-
tored and polled interrupts. When a request is presented to the interrupt controller, the cor-
responding bit in the IRQ2 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.
T3I—Timer 3 Interrupt Request
0 = No interrupt request is pending for Timer 3.
1 = An interrupt request from Timer 3 is awaiting service.
U1RXI—UART 1 Receive Interrupt Request
0 = No interrupt request is pending for the UART1 receiver.
1 = An interrupt request from UART1 receiver is awaiting service.
U1TXI—UART 1 Transmit Interrupt Request
0 = No interrupt request is pending for the UART 1 transmitter.
1 = An interrupt request from the UART 1 transmitter is awaiting service.
DMAI—DMA Interrupt Request
0 = No interrupt request is pending for the DMA.
1 = An interrupt request from the DMA is awaiting service.
PCxI—Port C Pin x Interrupt Request
0 = No interrupt request is pending for GPIO Port C pin x.
1 = An interrupt request from GPIO Port C pin x is awaiting service.
where x indicates the specific GPIO Port C pin number (0 through 3).
U1RXI
R/W
6
0
U1TXI
R/W
5
0
DMAI
R/W
4
0
Z8F640x/Z8F480x/Z8F320x/Z8F240x/Z8F160x
FC6H
PC3I
R/W
3
0
PC2I
R/W
2
0
PC1I
R/W
Interrupt Controller
1
0
Z8 Encore!
PC0I
R/W
0
0
®
50
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