XR16V2752 Datasheet | Exar

DESCRIPTION The XR16V27521 (V2752) 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 patible to Exar’s ST16C2552, XR16L2552 and XR16L2752. The V2752 register set is identical to the XR16L2752 and is patible to the ST16C2552 and the XR16C2852 enhanced features . 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. Onboard registers provide the user with operational status and data error flags. An internal loopback capability allows system diagnostics. Independent programmable 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 V2752 is available in 44-pin PLCC and 32pin QFN packages. NOTE: 1 Covered by U.S. Patent #5,649,122 FEATURES - - - - 2.25 to 3.6 Volt Operation 5 Volt Tolerant Inputs Pin-to-pin patible to Exar’s XR16L2752 Two independent UART channels - - Register set patible to XR16L2752 Data rate of up to 8 Mbps at at 3.3 V, and 6.25 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 Control Output via RTS# Automatic sleep mode Full modem interface Direction - - - - - - - - - - - Wireless Infrared (Ir DA 1.0) Encoder/Decoder APPLICATIONS - Portable Appliances - Telemunication Network Routers - Ethernet Network Routers - Cellular Data Devices - Factory Automation and Process Controls FIGURE 1. XR16V2752 BLOCK DIAGRAM - Alternate Function Register - Device...