Z8F6421PM020SC Datasheet, PDF (119/299 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers Z8 Encore-R 64K Series

Z8 Encore!^® 64K Series
Product Specification
99
RXD
Parity Checker
Receive Shifter
Receiver Control
with address compare
Receive Data
Register
System Bus
Control Registers
Transmit Data
Register
Status Register
Baud Rate
Generator
TXD
Transmit Shift
Register
Parity Generator
CTS
DE
Figure 13. UART Block Diagram
Transmitter Control
Operation
Data Format
The UART always transmits and receives data in an 8-bit data format, least-significant bit
first. An even or odd parity bit can be optionally added to the data stream. Each character
begins with an active Low Start bit and ends with either 1 or 2 active High Stop bits.
Figures 14 and 15 illustrates the asynchronous data format employed by the UART with-
out parity and with parity, respectively.
PS019915-1005
UART