Z8F082ASH020SC datasheet(53/244 Pages) ZILOG

53 / 244 page

PS024705-0405

P R E L I M I N A R Y

General-Purpose I/O

Z8 Encore! XP® F08xA Series

Product Specification

Port B

PB0

Reserved

AFS1[0]: 0

ANA0/AMPOUT

ADC Analog Input/Transamp Output

AFS1[0]: 1

PB1

Reserved

AFS1[1]: 0

ANA1/AMPINN

ADC Analog Input/Transamp Input (N)

AFS1[1]: 1

PB2

Reserved

AFS1[2]: 0

ANA2/AMPINP

ADC Analog Input/Transamp Input (P)

AFS1[2]: 1

PB3

CLKIN

External Clock Input

AFS1[3]: 0

ANA3

ADC Analog Input

AFS1[3]: 1

PB4

Reserved

AFS1[4]: 0

ANA7

ADC Analog Input

AFS1[4]: 1

PB5

Reserved

AFS1[5]: 0

VREF

ADC Voltage Reference

AFS1[5]: 1

PB6

Reserved

AFS1[6]: 0

Reserved

AFS1[6]: 1

PB7

Reserved

AFS1[7]: 0

Reserved

AFS1[7]: 1

Note: Because there are at most two choices of alternate function for any pin of Port B, the Alternate

Function Set register AFS2 is implemented but not used to select the function. Also, alternate

function selection as described in “Port A–D Alternate Function Sub-Registers” on page 39 must

also be enabled.

Table 14. Port Alternate Function Mapping (Continued)(20/28-Pin Parts)

Port

Mnemonic

Alternate Function Description

Alternate

Function Set

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