XR16V2751 Datasheet | Exar

FEATURES REV. P1.0.0 HIGH PERFORMANCE DUART WITH 64-BYTE FIFO AND POWERSAVE FEATURE GENERAL DESCRIPTION The XR16V27511 (V2751) is a high performance dual universal asynchronous receiver and transmitter (UART) with 64 byte TX and RX FIFOs. The device operates from 2.25 to 3.6 volts with 5 Volt tolerant inputs and is pin-to-pin and software patible to Exar’s XR16L2751. The device includes 2 additional capabilities over the XR16V2750: Intel and Motorola data bus selection and a “Power Save” 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 plete 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 V2751 is available in a 48-pin TQFP package. NOTE: 1 Covered by U.S. Patent #5,649,122 and #5,949,787 - 2.25 to 3.6 Volt Operation - 5 Volt Tolerant Inputs - Pin-to-pin patible to Exar’s XR16L2751 in the 48-TQFP package - Two independent UART channels - - - - - - - - - - - - - APPLICATIONS Register set identical to 16L2751 Data rate of up to 8 Mbps at at 3.3 V, and 4 Mbps at 2.5 V with 8X sampling rate Fractional Baud Rate Generator Transmit and Receive FIFOs of 64 bytes Programmable TX and RX FIFO Trigger Levels Transmit and Receive FIFO Level Counters Automatic Hardware (RTS/CTS) Flow Control Selectable Auto RTS Flow Control Hysteresis Automatic Software (Xon/Xoff) Flow Control Automatic RS-485 Half-duplex Direction Control Output via RTS# Wireless Infrared (Ir DA 1.0) Encoder/Decoder Automatic sleep mode with wake-up interrupt Full modem interface - Portable Appliances - Telemunication Network Routers - Ethernet Network Routers - Cellular Data...