Z8F021ASH020SC datasheet(120/276 Pages) ZILOG

120 / 276 page

PS022815-0206

UART

Z8 Encore! XP® 4K Series

Product Specification

101

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

(UxRXD) register (Table 63). The read-only UART Receive Data register shares a Regis-

ter 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 (UxSTAT0) and Status 1(UxSTAT1) registers (Tables 64 and 65) iden-

tify 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 63. UART Receive Data Register (U0RXD)

BITS

FIELD

RXD

RESET

XXX

R/W

RRR

ADDR

F40H

Table 64. UART Status 0 Register (U0STAT0)

BITS

FIELD

RDA

BRKD

TDRE

TXE

CTS

RESET

R/W

ADDR

F41H

Z8F021ASH020SC 数据表(PDF) 120 Page - Zilog, Inc.

Z8F021ASH020SC 数据表(HTML) 120 Page - Zilog, Inc.

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载