深圳市中立信电子科技有限公司

XR20M1172IG28TR-F

UART 接口集成电路 1.8V 2 Ch 64-byte TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO

GENERAL DESCRIPTION  

The XR20M1172IG28TR-F XR20M11721 is a high performance two channel  universal asynchronous receiver and transmitter  (UART) with 64 byte TX and RX FIFOs and a  selectable I2C/SPI slave interface. The XR20M1172  operates from 1.62 to 3.63 volts. 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. Additional enhanced features includes a  programmable fractional baud rate generator and 8X  and 4X sampling rate that allows for a maximum baud  rate of 16 Mbps at 3.3V. The XR20M1172 is available  in the 32-pin QFN and 28-pin TSSOP packages. The  32-pin QFN package has the EN485# and ENIR#  pins to allow the UART to power-up in the Auto  RS485 mode or the Infrared mode.

APPLICATIONS XR20M1172IG28TR-F

 Portable Appliances

 Battery-Operated Devices

 Cellular Data Devices

 Factory Automation and Process Controls

FEATURES XR20M1172IG28TR-F

 1.62 to 3.6 Volt Operation

 Selectable I2C/SPI Interface

 SPI clock frequency up to

■ 18 MHz at 3.3 V

■ 16 MHz at 2.5 V

■ 8 MHz at 1.8 V

 Full-featured UART

■ Data rate of up to 16 Mbps at 3.3 V

■ Data rate of up to 12.5 Mbps at 2.5 V

■ Data rate of up to 8 Mbps at 1.8 V

■ 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) Flow Control

■ Halt and Resume Transmission Control