MCP25055-I/P

I/o Expanders Overview

The MCP25055-I/P is a CAN I/O expander from the MCP2502X/5X family, implementing CAN V2.0B with programmable bit rates up to 1 Mb/s. It features eight general-purpose I/O lines and four 10-bit analog input channels with programmable conversion clocks and voltage reference sources. The device includes two 10-bit PWM outputs, three auto-transmit buffers, and two message reception buffers. It operates on a 2.7V to 5.5V supply, drawing 10 mA typically in active mode and 30 µA in standby. Configuration is stored in non-volatile memory for automatic loading at power-up.

I/o Expanders Feature Summary

• Integrates digital I/O expansion with four-channel 10-bit analog-to-digital conversion and dual PWM outputs.
• Supports hardware-based message scheduling and automatic transmission triggered by digital edge detection or analog threshold crossing.
• Includes non-volatile configuration memory that loads default settings automatically upon power-up without external microcontroller intervention.

I/o Expanders Applications

• CAN bus sensor nodes requiring integrated signal conditioning and digital control
• Industrial automation systems utilizing distributed I/O expansion over CAN networks
• Automotive subsystems needing autonomous error reporting and status monitoring

I/o Expanders Procurement Notes

Verify component authenticity through authorized Microchip distributors. Confirm package integrity matches the 14-pin PDIP specification. Ensure ordering suffixes align with industrial temperature range requirements. Request manufacturer documentation to validate revision levels before integration into production designs.

I/o Expanders Selection Notes

Select this component when system architecture requires standalone CAN node implementation without a central microcontroller. Choose based on the necessity for onboard analog acquisition and PWM generation capabilities. Evaluate pinout compatibility against existing PCB layouts designed for the 14-pin PDIP form factor.

I/o Expanders Part Context

This device belongs to the MCP2502X/5X series of CAN I/O expanders. It shares core protocol functionality with variants like the MCP25025 but distinguishes itself through the inclusion of analog input channels and PWM outputs. The 'I' suffix denotes the industrial operating temperature range, while '/P' indicates the plastic dual in-line package style.

I/o Expanders Replacement Considerations

Microchip recommends using the MCP2515 or MCP25625 for new designs instead of this component. These alternatives offer updated feature sets and support for modern CAN standards while maintaining functional compatibility within CAN network architectures.