SN32F100 Series
32-Bit Cortex-M0 Micro-Controller
SONiX TECHNOLOGY CO., LTD
Page 121
Version 1.9
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UNIVERSAL ASYNCHRONOUS
RECEIVER AND TRANSMITTER (UART)
12.1 OVERVIEW
The UART offers a flexible means of full-duplex data exchange with external equipment requiring an industry standard
NRZ asynchronous serial data format. The serial interface is applied to low speed data transfer and communicate with
low speed peripheral devices.
The UART offers a very wide range of baud rates using a fractional baud rate generator.
12.2 FEATURES
Full-duplex, 2-wire asynchronous data transfer.
Single-wire half-duplex communication
16-byte receive and transmit FIFOs
Register locations conform to 16550 industry standard.
Receiver FIFO trigger points at 1, 4, 8, and 14 bytes.
Built-in baud rate generator.
Software or hardware flow control.
12.3 PIN DESCRIPTION
Pin Name
Type
Description
GPIO Configuration
UTXDn
O
Serial Transmit data.
URXDn
I
Serial Receive data.
Depends on GPIOn_CFG
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