ZUSBOPTSC01ZACG datasheet(60/282 Pages) ZILOG

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PS022827-1212

P R E L I M I N A R Y

External Clock Setup

Z8 Encore! XP® F082A Series

Product Specification

Table 16. Port Alternate Function Mapping (8-Pin Parts)

Port

Mnemonic

Alternate Function

Description

Alternate

Function Select

Alternate

Function

Select

AFS2

Port A

PA0

T0IN

Timer 0 Input

AFS1[0]: 0

AFS2[0]: 0

Reserved

AFS1[0]: 0

AFS2[0]: 1

Reserved

AFS1[0]: 1

AFS2[0]: 0

T0OUT

Timer 0 Output Complement

AFS1[0]: 1

AFS2[0]: 1

PA1

T0OUT

Timer 0 Output

AFS1[1]: 0

AFS2[1]: 0

Reserved

AFS1[1]: 0

AFS2[1]: 1

CLKIN

External Clock Input

AFS1[1]: 1

AFS2[1]: 0

Analog Functions1 ADC Analog Input/VREF

AFS1[1]: 1

AFS2[1]: 1

PA2

DE0

UART 0 Driver Enable

AFS1[2]: 0

AFS2[2]: 0

RESET

External Reset

AFS1[2]: 0

AFS2[2]: 1

T1OUT

Timer 1 Output

AFS1[2]: 1

AFS2[2]: 0

Reserved

AFS1[2]: 1

AFS2[2]: 1

PA3

CTS0

UART 0 Clear to Send

AFS1[3]: 0

AFS2[3]: 0

COUT

Comparator Output

AFS1[3]: 0

AFS2[3]: 1

T1IN

Timer 1 Input

AFS1[3]: 1

AFS2[3]: 0

Analog Functions2 ADC Analog Input/LPO Input (P) AFS1[3]: 1

AFS2[3]: 1

PA4

RXD0

UART 0 Receive Data

AFS1[4]: 0

AFS2[4]: 0

Reserved

AFS1[4]: 0

AFS2[4]: 1

Reserved

AFS1[4]: 1

AFS2[4]: 0

Analog Functions2 ADC/Comparator Input (N)/LPO

Input (N)

AFS1[4]: 1

AFS2[4]: 1

PA5

TXD0

UART 0 Transmit Data

AFS1[5]: 0

AFS2[5]: 0

T1OUT

Timer 1 Output Complement

AFS1[5]: 0

AFS2[5]: 1

Reserved

AFS1[5]: 1

AFS2[5]: 0

Analog Functions2 ADC/Comparator Input (P) LPO

Output

AFS1[5]: 1

AFS2[5]: 1

Notes:

1. Analog functions include ADC inputs, ADC reference, comparator inputs and LPO ports.

2. The alternate function selection must be enabled; see the Port A–D Alternate Function Subregisters (PxAF) sec-

tion on page 47 for details.

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