MCP25050-I/SL

I/o Expanders Overview

The MCP25050-I/SL is a CAN I/O expander implementing the CAN V2.0B protocol 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 VREF sources. The device includes three auto-transmit buffers, two message reception buffers, one programmable mask, and two programmable filters. Operating from 2.7V to 5.5V, it draws 10 mA typical active current and 30 µA in standby mode. Configuration is stored in non-volatile memory for automatic loading on power-up.

I/o Expanders Feature Summary

• Implements CAN V2.0B protocol with hardware error management logic and bus-off recovery capabilities.
• Integrates four-channel 10-bit analog-to-digital converter with programmable thresholds and conversion clocks.
• Provides eight individually selectable digital I/O lines with transmit-on-change-of-state functionality.
• Supports automatic message transmission triggered by digital edge detection or analog threshold exceedance.

I/o Expanders Applications

• CAN node implementation without microcontroller dependency
• Remote sensor data acquisition via analog inputs
• Industrial automation I/O expansion over CAN bus

I/o Expanders Procurement Notes

Verify component authenticity through authorized Microchip distributors. Confirm package type matches SOIC-14 requirements. Check datasheet revision history for any pinout or electrical characteristic updates prior to final design integration.

I/o Expanders Selection Notes

Select this model when analog input capability is required alongside CAN communication. Compare against MCP25020 variants if analog functions are unnecessary. Ensure voltage supply range aligns with system 2.7V to 5.5V specifications.

I/o Expanders Part Context

Part of the MCP2502X/5X family of CAN I/O expanders. Designed as a standalone solution for CAN networks. Not recommended for new designs; Microchip suggests using MCP2515 or MCP25625 instead.

I/o Expanders Replacement Considerations

Microchip recommends MCP2515 or MCP25625 as modern alternatives. Verify interface compatibility and pin mapping differences before substitution.

I/o Expanders FAQ

Does the MCP25050 support one-wire CAN operation?

No, the MCP25050 does not support one-wire CAN operation. This feature is available only on MCP250X5 devices within the family.

How many acceptance filters are provided?

The device provides two full-acceptance filters (RXF0 and RXF1) for standard and extended identifiers.

What is the maximum operating temperature?

The industrial grade (-I) variant operates up to +85°C.