STM8L051F3 datasheet(19/46 Pages) STMICROELECTRONICS

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STM8L051F3

Functional overview

Doc ID 022985 Rev 1

19/46

3.13.3

USART

The USART interface (USART1) allows full duplex, asynchronous communications with

external devices requiring an industry standard NRZ asynchronous serial data format. It

offers a very wide range of baud rates.

●

1 Mbit/s full duplex SCI

●

SPI1 emulation

●

High precision baud rate generator

●

Smartcard emulation

●

IrDA SIR encoder decoder

●

Single wire half duplex mode

Note:

USART1 can be served by the DMA1 Controller.

3.14

Infrared (IR) interface

The low density STM8L05xxx devices contain an infrared interface which can be used with

an IR LED for remote control functions. Two timer output compare channels are used to

generate the infrared remote control signals.

3.15

Development support

Development tools

Development tools for the STM8 microcontrollers include:

●

The STice emulation system offering tracing and code profiling

●

The STVD high-level language debugger including C compiler, assembler and

integrated development environment

●

The STVP Flash programming software

The STM8 also comes with starter kits, evaluation boards and low-cost in-circuit

debugging/programming tools.

Single wire data interface (SWIM) and debug module

The debug module with its single wire data interface (SWIM) permits non-intrusive real-time

in-circuit debugging and fast memory programming.

The Single wire interface is used for direct access to the debugging module and memory

programming. The interface can be activated in all device operation modes.

The non-intrusive debugging module features a performance close to a full-featured

emulator. Beside memory and peripherals, CPU operation can also be monitored in real-

time by means of shadow registers.

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