Universal synchronous asynchronous receiver transmitter (USART) RM0008
760/1096 Doc ID 13902 Rev 12
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
● Transfer detection flags:
– Receive buffer full
– Transmit buffer empty
– End of Transmission flags
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