Table 239. Usart / Lpuart Features - STMicroelectronics STM32WL5 Series Reference Manual

Universal synchronous/asynchronous receiver transmitter (USART/UART)
35.3 USART extended features
• LIN master synchronous break send capability and LIN slave break detection capability
–
•
IrDA SIR encoder decoder supporting 3/16 bit duration for normal mode
•
Smartcard mode
–
–
•
Support for Modbus communication
–
–
35.4 USART implementation
The table(s) below describe(s) USART implementation. It(they) also include(s) LPUART for
comparison.
Hardware flow control for modem
Continuous communication using DMA
Multiprocessor communication
Synchronous mode (Master/Slave)
Smartcard mode
Single-wire Half-duplex communication
IrDA SIR ENDEC block
LIN mode
Dual clock domain and wake-up from low-power mode
Receiver timeout interrupt
Modbus communication
Auto baud rate detection
Driver Enable
USART data length
Tx/Rx FIFO
Tx/Rx FIFO size
Wake-up from Stop mode
1. X = supported.
2. Wake-up supported from Stop 0 and Stop 1 modes.
3. Wake-up supported from Stop 0, Stop 1 and Stop 2 modes.
1116/1450
13-bit break generation and 10/11 bit break detection when USART is hardware
configured for LIN
Supports the T 0 and T
=
the ISO/IEC 7816-3 standard
0.5 and 1.5 stop bits for Smartcard operation
Timeout feature
CR/LF character recognition

Table 239. USART / LPUART features

USART / LPUART modes/features
1 asynchronous protocols for smartcards as defined in
=
(1)
RM0453 Rev 5
USART1/2 LPUART1
X
X
X
X
X
X
X
X
X
X
X
X
X
7, 8 and 9 bits
X
8
(2)
X X
RM0453
X
X
X
-
-
X
-
-
X
-
-
-
X
X
(3)