Universal synchronous asynchronous receiver transmitter (USART) RM0008
779/1128 DocID13902 Rev 15
27.2 USART main features
• Full duplex, asynchronous communications
• NRZ standard format (Mark/Space)
• Fractional baud rate generator systems
– A common programmable transmit and receive baud rates up to 4.5 MBits/s
• Programmable data word length (8 or 9 bits)
• Configurable stop bits - support for 1 or 2 stop bits
• 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
• Transmitter clock output for synchronous transmission
• IrDA SIR Encoder Decoder
– Support for 3/16 bit duration for normal mode
• Smartcard Emulation Capability
– The Smartcard interface supports the asynchronous protocol Smartcards as
defined in ISO 7816-3 standards
– 0.5, 1.5 Stop Bits for Smartcard operation
• Single wire half duplex communication
• Configurable multibuffer communication using DMA (direct memory access)
– Buffering of received/transmitted bytes in reserved SRAM using centralized DMA
• Separate enable bits for Transmitter and Receiver
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