MCP2155-I/P

Controllers Overview

The MCP2155-I/P is an IrDA standard protocol stack controller designed for Data Communication Equipment (DCE) applications. It implements the IrLAP, IrLMP, IAS, Tiny TP, and IrCOMM protocols alongside physical layer encoding/decoding. The device supports serial baud rates of 9600, 19200, 57600, and 115200 bps, selected via hardware pins BAUD1 and BAUD0. Infrared transmission rates include 9600, 19200, 38400, 57600, and 115200 bps. It features a 64-byte data packet size, operates on a 3.3V or 5.0V supply with typical current consumption under 1 mA at 3.3V, and functions within an industrial temperature range using low-power CMOS technology.

Controllers Feature Summary

• Implements complete IrDA standard protocol stack including IrLAP, IrLMP, IAS, Tiny TP, and IrCOMM services.
• Provides transparent UART to IrDA bit encoder/decoder functionality for easy integration with host controllers.
• Supports point-to-point secondary device communication with hardware-configurable serial baud rate selection.
• Includes CRC implementation for data integrity and programmable device ID string capabilities.

Controllers Applications

• Embedded systems requiring IrDA wireless connectivity for serial data replacement.
• Portable computing devices such as PDAs and mobile phones connecting to peripherals.
• Legacy COM application emulation for printers and modem devices via IrCOMM service class.

Controllers Procurement Notes

Verify that the ordering suffix matches the required package type, as the -I/P designation specifically indicates the PDIP package variant. Confirm that the procurement source provides the official Microchip datasheet DS21690B to ensure compliance with electrical specifications and pinout definitions. Ensure the component meets the industrial temperature range requirements specified in the technical documentation.

Controllers Selection Notes

Select this component when implementing IrDA connectivity for DCE applications requiring support for the IrCOMM 9-wire cooked service class. It is suitable for designs needing hardware-based protocol handling to reduce host MCU processing load. Ensure the design accommodates the 18-pin DIP package constraints and provides the necessary 11.0592 MHz clock source via crystal or external input.

Controllers Part Context

The MCP2155 belongs to Microchip's family of IrDA standard protocol stack controllers. It serves as a bridge between a standard UART interface and an infrared optical transceiver. This component simplifies the implementation of wireless serial connections by handling complex protocol layers, allowing the host system to communicate with other IrDA-compliant devices without managing low-level signaling details.

Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing firmware if replacing legacy components, as protocol implementations may vary between manufacturers.