Z8F082ASH020SC datasheet(27/244 Pages) ZILOG

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PS024705-0405

P R E L I M I N A R Y

Pin Description

Z8 Encore! XP® F08xA Series

Product Specification

Table 3. Signal Descriptions

Signal Mnemonic

I/O

Description

General-Purpose I/O Ports A–D

PA[7:0]

I/O

Port A. These pins are used for general-purpose I/O.

PB[7:0]

I/O

Port B. These pins are used for general-purpose I/O. PB6 and PB7 are

available only in those devices without an ADC.

PC[7:0]

I/O

Port C. These pins are used for general-purpose I/O.

PD[0]

I/O

Port D. This pin is used for general-purpose output only.

Note: PB6 and PB7 are only available in 28-pin packages without ADC. In 28-pin packages with ADC,

they are replaced by AVDD and AVSS.

UART Controllers

TXD0

Transmit Data. This signal is the transmit output from the UART and IrDA.

RXD0

Receive Data. This signal is the receive input for the UART and IrDA.

CTS0

Clear To Send. This signal is the flow control input for the UART.

Driver Enable. This signal allows automatic control of external RS-485

drivers. This signal is approximately the inverse of the TXE (Transmit

Empty) bit in the UART Status 0 register. The DE signal may be used to

ensure the external RS-485 driver is enabled when data is transmitted by

the UART.

Timers

T0OUT/T1OUT

Timer Output 0–1. These signals are output from the timers.

T0OUT/T1OUT

Timer Complement Output 0–1. These signals are output from the timers

in PWM Dual Output mode.

T0IN/T1IN

Timer Input 0–1. These signals are used as the capture, gating and

counter inputs. The T0IN signal is multiplexed T0OUT signals.

Comparator

CINP/CINN

Comparator Inputs. These signals are the positive and negative inputs to

the comparator.

COUT

Comparator Output. This is the output of the comparator.

Analog

ANA[7:0]

Analog Port. These signals are used as inputs to the analog-to-digital

converter (ADC). The ANA0, ANA1 and ANA2 pins can also access the

inputs and output of the integrated transimpedance amplifier.

VREF

I/O

Analog-to-digital converter reference voltage input.

Z8F082ASH020SC Datasheet(PDF) 27 Page - Zilog, Inc.

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