MCP2140AT-I/SO

Controllers Overview

The MCP2140AT-I/SO is an IrDA standard protocol stack controller manufactured by Microchip Technology, designed for implementing wireless connectivity in embedded systems. It operates within a supply voltage range of 2.0V to 5.5V and supports an industrial temperature range from -40°C to +85°C. The device features a fixed data communication rate of 9600 baud and utilizes a UART interface for connecting to Data Communications Equipment (DCE) or Data Terminal Equipment (DTE). It includes a 60-byte data buffer size supporting 64-byte packet transmission. The component is housed in an 18-pin SOIC package and consumes less than 23 µA in automatic low power mode when no IR activity is present.

Controllers Feature Summary

• Implements the complete IrDA standard protocol stack including IrLAP, IrLMP, IAS, TinyTP, and IrCOMM services.
• Provides hardware UART-to-IrDA encoder/decoder functionality with bidirectional communication and CRC implementation.
• Features automatic low power mode that reduces current consumption significantly during periods of inactivity.
• Supports point-to-point applications operating as a secondary device with footprint compatibility to the MCP2140.

Controllers Applications

• Wireless connectivity for PCs with infrared ports
• Embedded systems utilizing PDAs and portable computing devices
• Integration with 16-bit PIC Microcontroller IrDA Standard Stack Library

Controllers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct package type and temperature rating. Confirm that the 'T' suffix indicates tape and reel packaging if required for automated assembly processes. Cross-reference the part number with the latest datasheet revision to validate all electrical specifications and pinout configurations before finalizing procurement orders.

Controllers Selection Notes

Select this component for applications requiring strict adherence to the IrDA standard at a fixed 9600 baud rate. Ensure the host system provides a 3.6864 MHz clock source for proper operation. Verify that the application design accommodates the 18-pin SOIC package dimensions and thermal requirements. Consider the automatic low power mode benefits for battery-operated devices requiring minimal standby current consumption.

Controllers Part Context

The MCP2140AT-I/SO belongs to the MCP2140A family of IrDA controllers produced by Microchip Technology. This series is designed to replace legacy discrete IR solutions by integrating the physical layer and protocol stack into a single low-pin-count device. The 'SO' designation specifically identifies the 18-lead Small Outline Integrated Circuit package variant within the broader product line.

Controllers Replacement Considerations

The MCP2140A offers footprint compatibility with the original MCP2140 model. Designers migrating from the MCP2140 should consult the manufacturer's migration guide to address any necessary software or hardware adjustments. No other direct substitute part numbers are confirmed in the provided documentation.