Z8 Encore! XP® 4K Series
Product Specification
39
Table 16. Port Alternate Function Mapping (8-Pin Parts)
Alternate
Function Select
Alternate Function Description Register AFS1
Alternate
FunctionSelect
Register AFS2
Port
Pin
Mnemonic
PA0
T0IN
Timer 0 Input
AFS1[0]: 0
AFS1[0]: 0
Port A
Reserved
Reserved
T0OUT
AFS1[0]: 0
AFS1[0]: 1
AFS1[0]: 1
AFS1[1]: 0
AFS1[1]: 0
AFS1[1]: 1
AFS1[1]: 1
AFS1[2]: 0
AFS1[2]: 0
AFS1[2]: 1
AFS1[2]: 1
AFS1[3]: 0
AFS1[3]: 0
AFS1[3]: 1
AFS1[3]: 1
AFS2[0]: 1
AFS2[0]: 0
AFS2[0]: 1
AFS2[1]: 0
AFS2[1]: 1
AFS2[1]: 0
AFS2[1]: 1
AFS2[2]: 0
AFS2[2]: 1
AFS2[2]: 0
AFS2[2]: 1
AFS2[3]: 0
AFS2[3]: 1
AFS2[3]: 0
AFS2[3]: 1
Timer 0 Output Complement
Timer 0 Output
PA1
PA2
PA3
T0OUT
Reserved
CLKIN
External Clock Input
Analog Functions* ADC Analog Input/VREF
DE0
UART 0 Driver Enable
External Reset
RESET
T1OUT
Reserved
CTS0
Timer 1 Output
UART 0 Clear to Send
Comparator Output
Timer 1 Input
COUT
T1IN
Analog Functions* ADC Analog Input/LPO Input
(P)
PA4
PA5
RXD0
UART 0 Receive Data
AFS1[4]: 0
AFS1[4]: 0
AFS1[4]: 1
AFS2[4]: 0
AFS2[4]: 1
AFS2[4]: 0
AFS2[4]: 1
Reserved
Reserved
Analog Functions* ADC/Comparator Input (N)/LPO AFS1[4]: 1
Input (N)
TXD0
UART 0 Transmit Data
AFS1[5]: 0
AFS1[5]: 0
AFS2[5]: 0
AFS2[5]: 1
T1OUT
Timer 1 Output Complement
* Analog Functions include ADC inputs, ADC reference, comparator inputs and LPO ports.
Note: Also, alternate function selection as described in Port A–D Alternate Function Sub-Registers on page 42
must be enabled.
PS022815-0206
General-Purpose I/O
ZILOG [ ZILOG, INC. ]
