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STM8S 数据表(PDF) 320 Page - STMicroelectronics |
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STM8S 数据表(HTML) 320 Page - STMicroelectronics |
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320 / 467 page  Universal asynchronous receiver transmitter (UART) RM0016 320/467 DocID14587 Rev 14 22 Universal asynchronous receiver transmitter (UART) 22.1 Introduction The UARTs in the STM8S and STM8AF microcontroller families (UART1, UART2, UART3 or UART4) offer a flexible means of full-duplex data exchange with external equipment requiring an industry standard NRZ asynchronous serial data format (UART mode). The STM8 UARTs offer a very wide range of baud rates and can also be used for multi- processor communication. They also support LIN (Local Interconnection Network) protocol version 1.3, 2.0, 2.1, 2.2 and J2602. UART1, UART2 and UART4 have extended features (see Table 52): • LIN slave mode is supported in UART2, UART3 and UART4. • Synchronous one-way communication, Smartcard Protocol and IrDA (Infrared Data Association) SIR ENDEC specifications are supported in UART1, UART2 and UART4. • Half-duplex single wire communication is supported in UART1 and UART4. Refer to the datasheet for information on the availability of the UART configurations (UART1, UART2, UART3 or UART4) in each microcontroller type. Table 52. UART configurations(1) Feature UART1 UART2 UART3 UART4 Asynchronous mode XXXX Multiprocessor communication XXXX Synchronous communication X X NA X Smartcard mode X X NA X IrDA mode X X NA X Single-wire Half-duplex mode X NA NA X LIN master mode XXXX LIN slave mode NA X X X 1. X = supported; NA = not applicable. |
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