Z8FS040 datasheet(11/56 Pages) ZILOG

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ZMOTION

TM Detection and Control Family

Product Specification

PS028506-1110

PRELIMINARY

Signal Descriptions

Table 3 below describes the Z8FS040 Series signals.

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[5:0]

I/O

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

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.

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 outputs 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.

Z8FS040 Datasheet(PDF) 11 Page - Zilog, Inc.

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