XR20M1172数据手册开发板套件编程器的评估演示板及套件规格书PDF

描述 Description

The XR20M1172¹ (M1172) 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 M1172 operates from 1.62 to 3.63 volts. It is software compatible to the SC16CIS762/752, but with additional features such as 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 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 M1172 is available in the 32-pin QFN, 28-pin TSSOP and 20-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.
NOTE: ¹Covered by U.S. Patent #5,649,122
For UART technical support or to obtain an IBIS model for this product, please email Exar's UART Technical Support group.

特性 Features

·1.62 to 3.6 Volt Operation·S/W compatible to Philips' SC16IS762/752·Selectable I²C/SPI Interface·Full-featured UART·Data rate of up to 16 Mbps at 3.3V·Data rate of up to 12.5 Mbps at 2.5V·Data rate of up to 8 Mbps at 1.8V·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·Automatic RS-485 Half-duplex Direction Control Output via RTS#·Wireless Infrared (IrDA 1.0 and 1.1) Encoder/ Decoder·Automatic sleep mode (< 15 uA at 3.3V)·General Purpose I/Os·Full modem interface
·Crystal oscillator (up to 24MHz) or external clock (up to 64MHz) input·32-QFN, 28-TSSOP, 20-TSSOP packages·Pb-Free, RoHS Compliant Versions Offered

应用 Application

·Portable Appliances ·Battery-Operated Devices ·Cellular Data Devices ·Factory Automation and Process Controls