DEVICE OVERVIEW
The MCP2140 is a cost-effective, low pin count (18-pin), easy-to-use device for implementing IrDA standard wireless connectivity. The MCP2140 provides support for the IrDA standard protocol “stack”, bit encoding/decoding and low cost, discrete IR receiver circuitry.
The serial and IR interface baud rates are fixed at 9600 baud. The serial interface and IR interface baud rates are dependent on the device frequency, but IrDA standard operation requires a device frequency of 7.3728 MHz.
The MCP2140 will specify to the Primary Device the IR baud rate during the Discover phase.

FEATUREs
• Implements the IrDA® standard, including:
   - IrLAP
   - IrLMP
   - IAS
   - TinyTP
   - IrCOMM (9-wire “cooked” service class)
• Provides IrDA standard physical signal layer support including:
   - Bidirectional communication
   - CRC implementation
   - Fixed Data communication rate of 9600 baud
   • Includes UART-to-IrDA standard encoder/
decoder functionality:
   - Easily interfaces with industry standard
      UARTs and infrared transceivers
• UART interface for connecting to Data
   Communications Equipment (DCE) or Data
   Terminal Equipment (DTE) systems
• Transmit/Receive formats (bit width) supported:
   - 1.63 µs
• Hardware UART Support:
   - 9.6 kbaud baud rate
   - 29 Byte Data Buffer Size
• Infrared Supported:
   - 9.6 kbaud baud rate
   - 64 Byte Data Packet Size
• Operates as Secondary Device
• Automatic Low Power mode
   - < 60 µA when no IR activity present
      (PHACT = L)

CMOS Technology
• Low power, high-speed CMOS technology
• Fully static design
• Low voltage operation
• Industrial temperature range
• Low power consumption
   - < 1 mA @ 3.0V, 7.3728 MHz (typical)