M0518 datasheet(49/72 Pages) ETC2

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NuMicro M0518 Series Datasheet

Feb 08, 2017

Page 49 of 72

Revision 1.01

6.11 UART Interface Controller (UART)

6.11.1 Overview

The NuMicro

 M0518 series provides up to six channels of Universal Asynchronous

Receiver/Transmitters (UART). UART0/UART1/UART2 supports 16 bytes entry FIFO and

UART3/UART4/UART5 support 1 byte buffer for data payload. Besides, only UART0 and UART1

support the flow control function. The UART Controller performs a serial-to-parallel conversion on

data received from the peripheral, and a parallel-to-serial conversion on data transmitted from the

CPU. The UART controller also supports IrDA SIR Function. UART0/UART1 provides RS-485

function mode. UART0/UART1/UART2 provides LIN master/slave function.

6.11.2 Features



Full duplex, asynchronous communications



Separates receive / transmit 16/16 bytes (UART0/UART1/UART2 support) entry FIFO

and 1/1 bytes buffer for data payloads (UART3/UART4/UART5 support)



Supports hardware auto-flow control function (CTS, RTS) and programmable RTS

flow control trigger level (UART0/UART1 support).



Programmable receiver buffer trigger level



Supports programmable baud-rate generator for each channel individually



Supports CTS wake-up function (UART0/UART1 support)



Supports 7-bit receiver buffer time-out detection function



Programmable transmitting data delay time between the last stop and the next start bit

by setting DLY (UA_TOR [15:8]) register



Supports break error, frame error, parity error and receive / transmit buffer overflow

detect function



Fully programmable serial-interface characteristics

Programmable data bit length, 5-, 6-, 7-, 8-bit character

Programmable parity bit, even, odd, no parity or stick parity bit generation and

detection

Programmable stop bit length, 1, 1.5, or 2 stop bit generation



IrDA SIR function mode

Supports 3/16-bit duration for normal mode



LIN function mode (UART0/UART1/UART2 support)

Supports LIN master/slave mode

Supports programmable break generation function for transmitter

Supports break detect function for receiver



RS-485 function mode. (UART0/UART1 support)

Supports RS-485 9-bit mode

Supports hardware or software direct enable control provided by RTS pin.

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