Z8F6421PM020SC Datasheet, PDF (118/299 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers Z8 Encore-R 64K Series

Z8 Encore!^® 64K Series
Product Specification
98
UART
Overview
The Universal Asynchronous Receiver/Transmitter (UART) is a full-duplex communica-
tion channel capable of handling asynchronous data transfers. The UART uses a single
8-bit data mode with selectable parity. Features of the UART include:
• 8-bit asynchronous data transfer
• Selectable even- and odd-parity generation and checking
• Option of one or two Stop bits
• Separate transmit and receive interrupts
• Framing, parity, overrun and break detection
• Separate transmit and receive enables
• 16-bit Baud Rate Generator (BRG)
• Selectable Multiprocessor (9-bit) mode with three configurable interrupt schemes
• Baud Rate Generator timer mode
• Driver Enable output for external bus transceivers
Architecture
The UART consists of three primary functional blocks: transmitter, receiver, and baud rate
generator. The UART’s transmitter and receiver function independently, but employ the
same baud rate and data format. Figure 13 illustrates the UART architecture.
PS019915-1005
UART