MCP2155T-I/SO

Controllers Overview

The MCP2155T-I/SO is an IrDA standard protocol stack controller manufactured by Microchip Technology, housed in an 18-pin SOIC package. It operates within a voltage range of 3.0V to 5.5V and supports serial baud rates of 9600, 19200, 57600, and 115200 bps. The device handles IrLAP, IrLMP, IAS, Tiny TP, and IrCOMM protocols with data rates up to 115.2 kbaud. It features a 64-byte data packet size and requires an 11.0592 MHz clock source. Operating temperatures range from -40°C to +85°C.

Controllers Feature Summary

• Implements the complete IrDA standard protocol stack including IrLAP, IrLMP, IAS, Tiny TP, and IrCOMM 9-wire service class.
• Provides hardware bit encoding and decoding for the IrDA physical signal layer with CRC implementation.
• Interfaces directly with industry-standard UARTs and infrared transceivers via asynchronous serial communication.
• Supports point-to-point secondary device applications with programmable device ID strings.

Controllers Applications

• Embedded systems requiring IrDA wireless connectivity
• Data Communicating Equipment (DCE) applications
• Serial port emulation for legacy COM devices

Controllers Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature grade. Ensure the procurement channel provides valid traceability for the component. Confirm that the received part matches the manufacturer's specifications regarding pinout and electrical characteristics before integration into the design.

Controllers Selection Notes

Select this component for designs requiring a dedicated IrDA protocol handler to reduce microcontroller overhead. It is suitable for applications needing half-duplex wireless serial communication. Ensure the host system can provide the required 11.0592 MHz clock signal or accommodate external crystal connections on the OSC pins.

Controllers Part Context

This component belongs to the MCP2155 family of IrDA controllers. The 'T' suffix indicates tape and reel packaging, while 'I' denotes the industrial temperature range. The '/SO' specifies the 18-pin Small Outline Integrated Circuit package. It serves as a bridge between a host UART and an optical infrared transceiver.

Controllers Replacement Considerations

Check for the MCP2155-I/SO variant if tube packaging is preferred over tape and reel. Verify compatibility with any newer revisions of the datasheet to ensure pinout and electrical parameters remain unchanged before substituting.