32.2 USART Features
The following are key features of the SERCOM USART:
- Full-duplex Operation
- Asynchronous (with Clock Reconstruction) or Synchronous Operation
- Internal or External Clock source for Asynchronous and Synchronous Operation
- Baud-rate Generator
- Supports Serial Frames with 5, 6, 7, 8 or 9 Data bits and 1 or 2 Stop bits
- Odd or Even Parity Generation and Parity Check
- Selectable LSB- or MSB-first Data Transfer
- Buffer Overflow and Frame Error Detection
- Noise Filtering, Including False Start bit Detection and Digital Low-pass Filter
- Collision Detection
- Can Operate in all Sleep modes
- Operation at Speeds up to Half the System Clock for Internally Generated Clocks
- Operation at Speeds up to the System Clock for Externally Generated Clocks
- RTS and CTS Flow Control
- IrDA Modulation and Demodulation up to 115.2 kbps
- LIN Host Support
- LIN Client
Support
- Auto-baud and break character detection
- ISO 7816 T = 0 or T = 1 protocols for Smart Card Interfacing
- RS485 Support
- Start-of-frame detection
- Two-Level Receive Buffer
- Can work with DMA
- 32-bit Extension for Better System Bus Utilization