XR20V2172

www.DataSheet4U.com FEBRUARY 2007 PRELIMINARY XR20V2172 REV. P1.0.1 TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER GENERAL DESCRIPTION The XR20V21721 (V2172) is a high performance two channel universal asynchronous receiver and transmitter (UART) with 64 byte TX and RX FIFOs, a selectable I2C/SPI slave interface and RS232 transceiver. The V2172 operates from 3.3 to 5.5 volts. The enhanced features in the V2172 include a programmable fractional baud rate generator, an 8X and 4X sampling rate that allows for a maximum baud rate of 1 Mbps at 3.3V. The standard features include 16 selectable TX and RX FIFO trigger levels, automatic hardware (RTS/CTS) and software (Xon/ Xoff) flow control, and a complete modem interface. Onboard registers provide the user with operational status and data error flags. An internal loopback capability allows system diagnostics. The V2172 is available in the 64-pin QFN. NOTE: 1 Covered by U.S. Patent #5,649,122 FEATURES Selectable I2C/SPI Interface Meets true EIA/TIA-232-F Standards from +3.3V to +5.5V operation Data rate up to 1 Mbps 45us sleep mode exit (charge pump to full power) ESD protection for RS-232 I/O pins at ■ ■ ■ +/-15kV - Human Body Model +/-15kV - IEC 1000-4-2, Air-Gap Discharge +/- 8kV - IEC 1000-4-2, Contact Discharge Fractional Baud Rate Generator Transmit and Receive FIFOs of 64 bytes 16 Selectable TX and RX FIFO Trigger Levels Automatic Hardware (RTS/CTS) Flow Control Automatic Software (Xon/Xoff...