Z8F6421PM020SC Datasheet, PDF (58/299 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers Z8 Encore-R 64K Series

Z8 Encore!^® 64K Series
Z8 Encore!
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Interrupt Request 2
IRQ2 (FC6H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
Port C Pin Interrupt Request
0 = IRQ from corresponding pin [3:0]
is not pending
1 = IRQ from corresponding pin [3:0]
is awaiting service
DMA Interrupt Request
UART 1 Transmitter Interrupt Request
UART 1 Receiver Interrupt Request
Timer 3 Interrupt Request
For all of the above peripherals:
0 = Peripheral IRQ is not pending
1 = Peripheral IRQ is awaiting service
IRQ2 Enable High Bit
IRQ2ENH (FC7H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
Port C Pin IRQ Enable High Bit
DMA IRQ Enable High Bit
UART 1 Transmitter IRQ Enable High
UART 1 Receiver IRQ Enable High Bit
Timer 3 IRQ Enable High Bit
IRQ2 Enable Low Bit
IRQ2ENL (FC8H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
Port C Pin IRQ Enable Low Bit
DMA IRQ Enable Low Bit
UART 1 Transmitter IRQ Enable Low
UART 1 Receiver IRQ Enable Low Bit
Timer 3 IRQ Enable Low Bit
Interrupt Port Select
IRQPS (FCEH - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
Port A or D Port Pin Select [7:0]
0 = Port A pin is the interrupt source
1 = Port D pin is the interrupt source
Interrupt Control
IRQCTL (FCFH - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
Reserved
Interrupt Request Enable
0 = Interrupts are disabled
1 = Interrupts are enabled
Port A Address
PAADDR (FD0H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
Port A Address[7:0]
Selects Port Sub-Registers:
00H = No function
01H = Data direction
02H = Alternate function
03H = Output control (open-drain)
04H = High drive enable
05H = STOP mode recovery enable
06H-FFH = No function
Port A Control
PACTL (FD1H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
Port A Control[7:0]
Provides Access to Port Sub-Registers
Port A Input Data
PAIN (FD2H - Read Only)
D7 D6 D5 D4 D3 D2 D1 D0
Port A Input Data [7:0]
Interrupt Edge Select
IRQES (FCDH - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
Port A or D Interrupt Edge Select [7:0]
0 = Falling edge
1 = Rising edge
Port A Output Data
PAOUT (FD3H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
Port A Output Data [7:0]
PS019915-1005
Control Register Summary