Date: 03/10/2008

Small and fast single-channel UART devices

Single-channel UART series XR16Mxxx from Exar offers enhanced features, multiple package sizes, voltage, and FIFO levels.
The device targets a cross-section of portable applications including cellular data devices, Personal Digital Assistants (PDAs), and GPS systems, as well as a variety of industrial and telecommunications applications.
Composed of six different devices, the XR16Mxxx series includes the XR16M570, XR16M580, XR16M670, XR16M680, XR16M770 and XR16M780.

Some of the common features of the series are:

1. Auto RTS/CTS hardware flow control
2. Auto XON/XOFF software flow control
3. TX/RX FIFO counters
4. Different TX and RX baud rates
5. Fractional baud rate generator
6. Auto RS-485 half-duplex direction control
7. Multi-drop mode with address detect
8. Infrared mode
9. Have power-save mode, which reduces the sleep current to a minimum during, sleep-modes.
10. XR16M570/580 series are 16-byte FIFO devices
11. XR16M670/680 series are 32-byte FIFO devices
12. XR16M770/780 are 64-byte FIFO devices
13. XR16M570/670/770 series is compliant with the Intel bus interface
14. XR16M580/680/780 is compatible with both the Intel and Motorola bus interface.
15. The XR16M580/680/780 is compatible with Exar's earlier XR16L580 in 32-pin QFN and 48-pin TQFP packages.
16. XR16M570/670/770 series is compatible with the XR16L570 in 24-pin and 32-pin QFN packages.
17. XR16Mxxx series is also available in a 25-pin BGA package

Tools and support: Evaluation boards, reference designs, and software drivers are
available.
For more information about Exar visit: http://www.exar.com