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Functional overview STM32F303x6/x8

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3.16.2 Universal synchronous / asynchronous

receivers / transmitters (USARTs)

The STM32F303x6/8 devices have three embedded universal synchronous

receivers/transmitters (USART1, USART2 and USART3).

The USART interfaces are able to communicate at speeds of up to 9 Mbits/s.

USART1 provides hardware management of the CTS and RTS signals. It supports IrDA SIR

ENDEC, the multiprocessor communication mode, the single-wire half-duplex

communication mode and has LIN Master/Slave capability.

All USART interfaces can be served by the DMA controller.

The features available in the USART interfaces are showed below in Table 8.

Table 7. STM32F303x6/8 I

C implementation

C features

(1)

1. X = supported.

I2C1

7-bit addressing mode X

10-bit addressing mode X

Standard mode (up to 100 kbit/s) X

Fast mode (up to 400 kbit/s) X

Fast Mode Plus with 20mA output drive I/Os (up to 1 Mbit/s) X

Independent clock X

SMBus X

Wakeup from STOP X

Table 8. USART features

USART modes/features

(1)

USART1

USART2

USART3

Hardware flow control for modem X X

Continuous communication using DMA X X

Multiprocessor communication X X

Synchronous mode X X

Smartcard mode X -

Single-wire half-duplex communication X X

IrDA SIR ENDEC block X -

LIN mode X -

Dual clock domain and wake up from Stop mode X -

Receiver timeout interrupt X -

Modbus communication X -

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