XR16M2751

www.DataSheet4U.com JUNE 2007 PRELIMINARY XR16M2751 P1.0.0 HIGH PERFORMANCE DUART WITH 64-BYTE FIFO AND POWERSAVE GENERAL DESCRIPTION The XR16M27511 (M2751) is a high performance dual universal asynchronous receiver and transmitter (UART) with 64 byte TX and RX FIFOs. The device operates from 1.62 to 3.6 volts and is pin-to-pin and software compatible to Exar’s XR16V2751. The device includes 2 additional capabilities over the XR16M2750: Intel and Motorola data bus selection and a “PowerSave” mode to further reduce sleep current to a minimum during sleep mode. It supports the Exar’s enhanced features of programmable FIFO trigger level and FIFO level counters, automatic hardware (RTS/CTS) and software flow control, automatic RS-485 half duplex direction control output and a complete modem interface. An internal loopback capability allows system diagnostics. Independent programmable fractional baud rate generators are provided in each channel to select data rates up to 8 Mbps at 3.3 Volt and 8X sampling clock. The M2751 is available in a 48-pin TQFP package. NOTE: 1 Covered by U.S. Patent #5,649,122 and #5,949,787 FEATURES 1.62 to 3.6 Volt Operation Pin-to-pin compatible to Exar’s XR16V2751 in the 48-TQFP package Two independent UART channels ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ APPLICATIONS Register set identical to 16V2751 Data rate of up to 8 Mbps at 3.3 V, and 6.25 Mbps at 2.5 V and 4 Mbps at 1.8 V with 8X sampling rate Fractional Baud Rate Generator Transmit and Receiv...