MaxLinear XR16L580IM-F

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 compatible 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 compatible to the 16C550 register set plus enhanced registers for additional features to support today’s high bandwidth data communication 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 (IrDA) encoder/decoder for wireless applications and a unique Power-Save mode to increase battery operating time. The device comes in the 48-TQFP and very small 32-QFN and 24-QFN packages in industrial temperature range.

The XR16L580 (L580) is an enhanced 16C550 Universal Asynchronous Receiver and Transmitter (UART). Its features set is compatible to the ST16C580 device and additionally offers Intel or Motorola data bus interface and Power-Save to isolate the data bus interface during Sleep mode. Hence, the L580 adds 2 more inputs: 16/ 68# and PwrSave pins. The XR16L580 can operate from 2.25V to 5.5V with 5 volt tolerant inputs. The configuration registers set is 16550 UART compatible for control, status and data transfer. Also, the L580 has 16-bytes of transmit and receive FIFOs, automatic RTS/CTS hardware flow control, automatic Xon/Xoff and special character software flow control, transmit and receive FIFO trigger levels, infrared encoder and decoder (IrDA ver 1.0), programmable baud rate generator with a prescaler of divide by 1 or 4. The L580 is fabricated using an advanced CMOS process.

• Smallest Full Featured UART
• 2.25V to 5.5V Supply Voltage
• 5V Tolerant Inputs (except XTAL1)
• Intel/Motorola Bus Select
• ’0 ns’ Address Hold Time (TAH and TADH)
• Pin and Software Compatible to industry standard 16C450, 16C550, ST16C580, ST16C650A and XR16C850 in the 48-TQFP package
• 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
• Infrared (IrDA) Encoder/Decoder
• Complete Modem Interface
• Power-Save Mode to conserve battery power
• Sleep Mode with Wake-up Interrupt
• Small packages: 24-QFN (4x4x0.9mm) and 32-QFN (5x5x0.9mm)
• Compatible to standard 48-TQFP packages, without the following signals: IOR, IOW, CS1, CS2, TXRDY#, RXRDY#, RCLK, BAUDOUT#, OP1# and OP2#
• Industrial Temperature Grade(-40 to +85°C)

• Handheld Terminals and Tablets
• Handheld Computers
• Wireless Portable Point-of-Sale Terminals
• Cellular Phones DataPort
• GPS Devices
• Personal Digital Assistants Modules
• Battery Operated Instruments