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. It operates in Data Communication Equipment (DCE) and Data Terminal Equipment (DTE) applications, residing between a UART and an infrared optical transceiver. The MCP2140A encodes an asynchronous serial data stream into infrared (IR) formatted pulses and decodes received IR pulses for the host controller. It supports point-to-point applications as a secondary device.
Product Attributes
- Brand: Microchip Technology Inc.
- Origin: Not specified
- Material: CMOS Technology
- Color: Not specified
- Certifications: FCC Part 15 (implied advantage for infrared technology)
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 |
| Data Communication Rate | Fixed 9600 baud |
| Encoder/Decoder Functionality | UART-to-IrDA standard |
| UART Interface | Connects to DCE or 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 Support | 9.6 kbaud baud rate, 64 Byte Packet Size (60 Data Bytes) |
| Operating Mode | Secondary Device |
| Operating Voltage | 2.0V to 5.5V |
| Low Power Mode (Automatic) | < 23 A (maximum) @ 2.0V (PHACT = L) |
| Low Power Consumption (Active) | < 407 A (maximum) @ 2.0V, 3.6864 MHz |
| Package Types | PDIP, SOIC (18-pin), SSOP (20-pin) |
| Resets | RESET, POR (PWRT and OST) |
| Oscillator/Clock | OSC2/CLKI, OSC1 |
| IR RX Photo Detect Diode Reference | RXPDREF (VDD/2 typical) |
| IR RX Photo Detect Diode Input | RXPD (pulse required, crosses threshold set by RXPDREF) |
| Protocol Handler Active Output | PHACT (Open Collector, 1 = Discovery/NRM, 0 = NDM/Low Power) |
| Ring Indicator Input | RI (1 = No Ring Indicate, 0 = Ring Indicate Present) |
| Data Set Ready Output | DSR (1 = No IR Link, 0 = IR Link Established) |
| Data Terminal Ready Input | DTR (1 = Device not ready, 0 = Device ready) |
| Clear to Send Output | CTS (1 = Host should not send, 0 = Host may send) |
| Request to Send Input | RTS (1 = Host not ready to receive, 0 = Host ready to receive) |
| Carrier Detect Input | CD (1 = No carrier, 0 = Carrier present) |
2411220247_MICROCHIP-MCP2140A-I-SS_C639047.pdf
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