Product Overview
The MCP2140A is a cost-effective, low pin count (18-pin), easy-to-use device for implementing IrDA standard wireless connectivity. It provides support for the IrDA standard protocol stack, bit encoding/decoding, and low-cost, discrete IR receiver circuitry. The MCP2140A is footprint compatible with the MCP2140. The serial and IR interface baud rates are fixed at 9600 baud. The MCP2140A will specify the IR baud rate to the primary device during the Discover phase. It can operate in Data Communication Equipment (DCE) and Data Terminal Equipment (DTE) applications, and resides between a UART and an infrared optical transceiver. The MCP2140A encodes an asynchronous serial data stream, converting each data bit to the corresponding infrared (IR) formatted pulse. IR pulses received are decoded and then handled by the protocol handler state machine. The protocol handler sends the appropriate data bytes to the host controller in UART formatted serial data. The MCP2140A supports "point-to-point" applications, that is, one primary device and one secondary device. It operates as a secondary device and does not support "multi-point" applications. The encoding/decoding functionality of the MCP2140A is designed to be compatible with the physical layer component of the IrDA standard, often referred to as "IrPHY".
Product Attributes
- Brand: Microchip Technology Inc.
- Origin: Not specified
- Material: CMOS Technology
- Color: Not specified
- Certifications: Not specified
Technical Specifications
| Feature | Specification |
| IrDA Protocols Implemented | IrLAP, IrLMP, IAS, Tiny TP, IrCOMM (9-wire cooked service class) |
| Physical Signal Layer Support | Bidirectional communication, CRC implementation, Fixed Data communication rate of 9600 baud |
| UART Interface | For connecting to Data Communications Equipment (DCE) or Data Terminal Equipment (DTE) systems |
| Transmit/Receive Formats (bit width) | 1.63 s (Transmit & Receive), 3/16 bit time (Receive Only) |
| Hardware UART Support | 9.6 kbaud baud rate, 60 Byte Data Buffer Size (64 Byte Packet) |
| Infrared Supported | 9.6 kbaud baud rate, 64 Byte Packet Size (60 Data Bytes) |
| Device Operation | Secondary Device |
| Operating Voltage | 2.0V to 5.5V |
| Low Power Mode (Automatic) | < 23 A (maximum) @ 2.0V, when no IR activity present (PHACT = L) |
| Low Power Consumption (Typical) | < 407 A (maximum) @ 2.0V, 3.6864 MHz |
| Technology | Low power, high-speed CMOS technology |
| Package Types | PDIP, SOIC, SSOP |
| Fixed Baud Rate | 9600 baud (Serial and IR interfaces) |
| Device Frequency for IrDA Standard Operation | 3.6864 MHz |
| Reset Functionality | RESET, POR (PWRT and OST) |
2411220247_MICROCHIP-MCP2140A-I-SO_C642508.pdf
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