Z8F0113 datasheet(51/245 Pages) ZILOG

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PS024315-1011

P R E L I M I N A R Y

GPIO Alternate Functions

Z8 Encore! XP® F0823 Series

Product Specification

Table 17. Port Alternate Function Mapping (Non 8-Pin Parts)

Port

Mnemonic

Alternate Function Description

Alternate Function

Set Register AFS1

Port A1

PA0

T0IN/T0OUT

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/T1OUT2

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 as described in the Port A–C Alternate Function

Subregisters section on page 43 automatically enables the associated alternate function.

2. Whether PA0/PA6 take on the timer input or timer output complement function depends on the timer configura-

tion as described in the Timer Pin Signal Operation section on page 83.

3. Because there are at most two choices of alternate function for any pin of Port B, the Alternate Function Set reg-

ister AFS2 is implemented but not used to select the function. Also, alternate function selection as described in

the Port A–C Alternate Function Subregisters section on page 43 must also be enabled.

4. VREF is available on PB5 in 28-pin products only.

5. Because there are at most two choices of alternate function for any pin of Port C, the Alternate Function Set reg-

ister AFS2 is implemented but not used to select the function. Also, Alternate Function selection as described in

the Port A–C Alternate Function Subregisters section on page 43 must also be enabled.

6. VREF is available on PC2 in 20-pin parts only.

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