STM32L475RC datasheet(47/193 Pages) STMICROELECTRONICS

Part #	STM32L475RC

Description	Ultra-low-power ARM Cortex-M4 32-bit MCUFPU, 100DMIPS, up to 1MB Flash, 128 KB SRAM, USB OTG FS, analog, audio

PDF	193 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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47 / 193 page

DocID027692 Rev 2

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STM32L475xx

Functional overview

3.27

Low-power universal asynchronous receiver transmitter

(LPUART)

The device embeds one Low-Power UART. The LPUART supports asynchronous serial

communication with minimum power consumption. It supports half duplex single wire

communication and modem operations (CTS/RTS). It allows multiprocessor

communication.

The LPUART has a clock domain independent from the CPU clock, and can wakeup the

system from Stop mode using baudrates up to 220 Kbaud. The wake up events from Stop

mode are programmable and can be:

•

Start bit detection

•

Any received data frame

•

A specific programmed data frame

Only a 32.768 kHz clock (LSE) is needed to allow LPUART communication up to 9600

baud. Therefore, even in Stop mode, the LPUART can wait for an incoming frame while

having an extremely low energy consumption. Higher speed clock can be used to reach

higher baudrates.

LPUART interface can be served by the DMA controller.

STM32L475RC Datasheet(PDF) 47 Page - STMicroelectronics