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MAX3109 Description

The MAX3109 advanced dual universal asynchronous receiver-transmitter (UART) has 128 words of receive and transmit first-in/first-out (FIFO) and a high-speed SPI or I2C controller interface. The 2x and 4x rate modes allow a maximum of 24Mbps data rates. A phase-locked loop (PLL) and the fractional baud-rate generators allow a high degree of flexibility in baud-rate programming and reference clock selection.

MAX3109 Key Features

  • Bridges an SPI/MICROWIRE or I2C Microprocessor Bus to an Asynchronous Interface Such as RS-485, RS-232, or IrDASM
  • SIR- and MIR-pliant IrDA Encoder/Decoder
  • Line Noise Indication Ensures Data Link Integrity
  • Deep, 128-Word Buffer and Automated Control Features Help Offload Activity on the Microcontroller
  • Automatic RTS_ and CTS_ Flow Control
  • Automatic XON/XOFF Software Flow Control
  • 9-Bit Multidrop-Mode Data Filtering -- Special Character Detection -- GPIO-Based Character Detection -- Two Timers Route
  • Saves Board Space
  • TQFN (5mm x 5mm) Package
  • Dual UART in a Single Package