XR16L580 Datasheet | Exar

.. áç JANUARY 2004 SMALLEST 2.25V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE REV. 1.2.0 GENERAL DESCRIPTION The XR16L580 (L580) is a 2.25 to 5.5 volt Universal Asynchronous Receiver and Transmitter (UART) with 5 volt tolerant inputs and a reduced pin count. It is pin-to-pin and software patible to industry standard 16C450, 16C550, ST16C580, ST16C650A and XR16C850 UARTs. It has 16 bytes of TX and RX FIFOs and is capable of operating up to serial data rate of 1 Mbps at 2.25 volt supply voltage. The internal registers is patible to the 16C550 register set plus enhanced registers for additional Features to support today’s high bandwidth data munication needs. The enhanced Features include Intel or Motorola data bus interface to match your CPU interface, automatic hardware and software flow control to prevent data loss, selectable RX and TX trigger levels for more efficient interrupt service, wireless infrared (Ir DA) encoder/decoder for wireless applications and a unique Power-Save mode to increase battery operating time. The device es in the 48-TQFP and a very small 32-QFN packages in industrial temperature range. Features - Industry Smallest Full Featured UART - 2.25V to 5.5V Operation - 5V Tolerant Inputs - Intel/Motorola Bus Select - ’0 ns’ Address Hold Time (TAH and TADH) - Pin and Software patible to industry standard 16C450, 16C550, ST16C580, ST16C650A XR16C850 in the 48-TQFP package. and - 16-byte Transmit FIFO - 16-byte Receive FIFO with Errors Flags - Selectable RX and TX FIFO Trigger Levels - Automatic Hardware (RTS/CTS) Flow Control - Automatic Software (Xon/Xoff) Flow Control - Up to 3.125 Mbps Data Rate at 5V and 2 Mbps at 3.3V and 1 Mbps at 2.25V Operation with External Clock Input APPLICATIONS - Handheld Terminals and Tablets - Handheld puters - Wireless Portable Point-of-Sale Terminals - Cellular Phones Data Port - GPS Devices - Personal Digital Assistants Modules - Battery Operated Instruments FIGURE...