MCP25025-I/SL

I/o Expanders Overview

The MCP25025-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 individually selectable as inputs or outputs, three auto-transmit buffers, and two message reception buffers. The device includes one programmable mask and two programmable filters for identifier acceptance. It operates from 2.7V to 5.5V with typical active current of 10 mA and standby current of 30 µA in CAN Sleep mode. Configuration is stored in non-volatile memory and loaded automatically on power-up. It supports optional 1-wire CAN bus operation and is available in 14-pin SOIC packages.

I/o Expanders Feature Summary

• Implements CAN V2.0B protocol with hardware-managed message scheduling and automatic transmission on input state changes.
• Features non-volatile configuration memory that loads user settings automatically upon power-up without requiring external microcontrollers.
• Provides eight individually configurable general-purpose I/O lines with selectable transmit-on-pin-change functionality.
• Supports optional 1-wire CAN bus operation to reduce wiring complexity in distributed control systems.

I/o Expanders Applications

• Distributed industrial automation control nodes
• Automotive electronic subsystems requiring CAN connectivity
• Remote I/O expansion for embedded systems

I/o Expanders Procurement Notes

Verify component authenticity through authorized Microchip distributors or direct manufacturer channels. Confirm the specific suffix -I/SL corresponds to the Industrial temperature range (-40°C to +85°C) and SOIC-14 package variant required for your design. Ensure compliance with RoHS directives as specified in the official datasheet documentation before finalizing procurement orders.

I/o Expanders Selection Notes

Select this component when a standalone CAN node with digital I/O expansion is needed without an external MCU. Compare against MCP25020 if 1-wire operation is not required, or MCP2505X series if analog-to-digital conversion capabilities are necessary. Verify that the 14-pin SOIC package fits the PCB layout constraints and that the 1 Mbps maximum data rate meets system timing requirements.

I/o Expanders Part Context

The MCP25025 belongs to the MCP250XX family of CAN I/O expanders designed to simplify network integration by eliminating the need for a central processor at each node. This specific model distinguishes itself within the family by supporting optional 1-wire CAN bus operation, unlike the MCP25020 which lacks this feature. It serves as a dedicated peripheral controller for managing local I/O states over a CAN network.

I/o Expanders Replacement Considerations

Microchip recommends using MCP2515 or MCP25625 for new designs as the MCP250XX series is not recommended for new applications. These alternatives offer updated features and support but require different interface configurations such as SPI instead of native CAN I/O expansion logic.

I/o Expanders FAQ

Does the MCP25025 include analog-to-digital converter (ADC) channels?

No, the MCP25025 does not include ADC channels. Only the MCP2505X devices in the family feature four 10-bit analog input channels.

How many acceptance filters are available for incoming messages?

The device provides two programmable acceptance filters (RXF0 and RXF1) along with one programmable mask to define identifier matching criteria.

What is the function of the non-volatile memory in this device?

The non-volatile memory stores user configuration parameters, allowing the device to automatically load its default configuration upon power-up without external initialization.