Z8F042ASJ020EG2156 Datasheet, PDF (56/280 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F082A Series
Product Specification
40
Table 15. Port Alternate Function Mapping (Non 8-Pin Parts)
Port
Pin
Port A^1,2 PA0
Mnemonic
T0IN/T0OUT
Alternate Function Description
Alternate Function
Set Register AFS1
Timer 0 Input/Timer 0 Output Complement N/A
Reserved
PA1 T0OUT
Timer 0 Output
Reserved
PA2 DE0
UART 0 Driver Enable
Reserved
PA3 CTS0
UART 0 Clear to Send
Reserved
PA4 RXD0/IRRX0 UART 0/IrDA 0 Receive Data
Reserved
PA5 TXD0/IRTX0
UART 0/IrDA 0 Transmit Data
Reserved
PA6 T1IN/T1OUT
Timer 1 Input/Timer 1 Output Complement
Reserved
PA7 T1OUT
Timer 1 Output
Reserved
Notes:
1. Because there is only a single alternate function for each Port A pin, the Alternate Function Set registers are not
implemented for Port A. Enabling alternate function selections automatically enables the associated alternate
function. See the Port A–D Alternate Function Subregisters (PxAF) section on page 47 for details.
2. Whether PA0/PA6 takes on the timer input or timer output complement function depends on the timer configura-
tion. See the Timer Pin Signal Operation section on page 84 for details.
3. Because there are at most two choices of alternate function for any pin of Port B, the Alternate Function Set
Register AFS2 is not used to select the function. Alternate function selection must also be enabled. See the Port
A–D Alternate Function Subregisters (PxAF) section on page 47 for details.
4. V_REF is available on PB5 in 28-pin products and on PC2 in 20-pin parts.
5. Because there are at most two choices of alternate function for any pin of Port C, the Alternate Function Set
Register AFS2 is not used to select the function. Alternate function selection must also be enabled. See the Port
A–D Alternate Function Subregisters (PxAF) section on page 47 for details.
6. Because there is only a single alternate function for the Port PD0 pin, the Alternate Function Set registers are
not implemented for Port D. Enabling alternate function selections automatically enables the associated alter-
nate function. See the Port A–D Alternate Function Subregisters (PxAF) section on page 47 for details.
PS022828-0413
PRELIMINARY
External Clock Setup