Z8F082ASH020SC datasheet(114/244 Pages) ZILOG

114 / 244 page

PS024705-0405

P R E L I M I N A R Y

UART

Z8 Encore! XP® F08xA Seriess

Product Specification

TXD—Transmit Data

UART transmitter data byte to be shifted out through the TXDx pin.

UART Receive Data Register

Data bytes received through the RXDx pin are stored in the UART Receive Data register

(Table 61). The read-only UART Receive Data register shares a Register File address with

the Write-only UART Transmit Data register.

RXD—Receive Data

UART receiver data byte from the RXDx pin

UART Status 0 Register

The UART Status 0 and Status 1 registers (Table 62 and 54) identify the current UART

operating configuration and status.

RDA—Receive Data Available

This bit indicates that the UART Receive Data register has received data. Reading the

UART Receive Data register clears this bit.

0 = The UART Receive Data register is empty.

1 = There is a byte in the UART Receive Data register.

PE—Parity Error

This bit indicates that a parity error has occurred. Reading the UART Receive Data regis-

ter clears this bit.

Table 61. UART Receive Data Register (U0RXD)

BITS

FIELD

RXD

RESET

XXX

R/W

RRR

ADDR

F40H

Table 62. UART Status 0 Register (U0STAT0)

BITS

FIELD

RDA

BRKD

TDRE

TXE

CTS

RESET

R/W

ADDR

F41H

Z8F082ASH020SC Datasheet(PDF) 114 Page - Zilog, Inc.

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