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STM32WBA62CG Datasheet(PDF) 62 Page - STMicroelectronics |
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STM32WBA62CG Datasheet(HTML) 62 Page - STMicroelectronics |
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62 / 185 page  Functional overview STM32WBA6xxx 62/185 DS14736 Rev 1 3.32 Universal synchronous/asynchronous receiver transmitter (USART) and low-power universal asynchronous receiver transmitter (LPUART) The devices have up to three embedded universal synchronous receiver transmitters (USART1, USART2, USART3) and one low-power universal asynchronous receiver transmitter (LPUART1). 3.32.1 USART The USART offers a flexible means to perform full-duplex data exchange with external equipments requiring an industry standard NRZ asynchronous serial data format. A very wide range of baud rates can be achieved through a fractional baud rate generator. The USART supports both synchronous one-way and half-duplex single-wire communications, as well as LIN (local interconnection network), Smartcard protocol, IrDA (infrared data association) SIR ENDEC specifications, and modem operations (CTS/RTS). Multiprocessor communications are also supported. High-speed data communications up to 20 Mbauds are possible by using the direct memory access (DMA) for multibuffer configuration. Table 19. USART and LPUART features USART modes/features(1) USART1 USART2 USART3 LPUART1 Hardware flow control for modem X X X X Continuous communication using DMA X X X X Multiprocessor communication X X X X Synchronous mode (master/slave) X X X - Smartcard mode X X X - Single-wire half-duplex communication X X X X IrDA SIR ENDEC block X X X - LIN mode X X X - Dual-clock domain, wake-up from Stop modes X X X X Dual-clock domain, wake-up from Stop 2 modes - - - X Receiver timeout interrupt X X X - Modbus communication X X X - Auto-baud rate detection X X X - Driver enable X X X X USART data length 7, 8, and 9 bits Tx/Rx FIFO X X X X Tx/Rx FIFO size 8 bytes Autonomous in Stop 0, 1 modes with wake-up capability X X X X Wake-up capability in Stop 2 mode - - - X 1. X = supported. |
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