Universal synchonous receiver transmitter (USART) RM0444
1000/1390 RM0444 Rev 5
33.3 USART extended features
• LIN master synchronous break send capability and LIN slave break detection capability
– 13-bit break generation and 10/11 bit break detection when USART is hardware
configured for LIN
• IrDA SIR encoder decoder supporting 3/16 bit duration for normal mode
• Smartcard mode
– Supports the T
= 0 and T = 1 asynchronous protocols for smartcards as defined in
the ISO/IEC 7816-3 standard
– 0.5 and 1.5 stop bits for Smartcard operation
• Support for Modbus communication
– Timeout feature
– CR/LF character recognition
33.4 USART implementation
The table below describes USART implementation on STM32G0x1 devices. It also includes
LPUART for comparison.
Table 179. STM32G0x1 features
USART / LPUART instances
STM32G031xx,
STM32G041xx
STM32G051xx
STM32G061xx
STM32G071xx,
STM32G081xx
STM32G0B1xx,
STM32G0C1xx
USART1 FULL FULL FULL
USART2 BASIC FULL FULL
USART3 - BASIC FULL
USART4 - BASIC BASIC
USART5 - - BASIC
USART6 - - BASIC
LPUART1 LP LP LP
LPUART2 - - LP
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