MCP2515-I/P

Controllers Overview

The MCP2515-I/P is a stand-alone CAN controller implementing the CAN V2.0B specification with support for communication rates up to 1 Mb/s. It interfaces with microcontrollers via an industry-standard SPI protocol operating at frequencies up to 10 MHz, supporting modes 0,0 and 1,1. The device features three transmit buffers and two receive buffers, along with six 29-bit acceptance filters and two masks for message filtering. It operates on a supply voltage ranging from 2.7V to 5.5V, drawing a typical active current of 5 mA and standby current of 1 µA in sleep mode. The component is housed in an 18-lead PDIP or SOIC package and supports industrial temperature ranges from -40°C to +85°C.

Controllers Feature Summary

• Implements CAN V2.0B specification with support for standard and extended data frames as well as remote frames.
• Includes hardware message filtering capabilities with six 29-bit filters and two 29-bit masks to reduce host MCU overhead.
• Features a high-speed SPI interface compatible with standard microcontroller peripherals for efficient register access.
• Provides programmable clock output and Start-of-Frame monitoring signals for system synchronization and diagnostics.

Controllers Applications

• Automotive electronic systems requiring Controller Area Network connectivity
• Industrial automation and control networks
• Embedded sensor nodes and distributed measurement systems

Controllers Procurement Notes

Verify that the ordering suffix matches the required package type, specifically the 18-lead PDIP or SOIC configuration for the 'P' variant. Confirm the temperature grade corresponds to the Industrial rating (-40°C to +85°C). Ensure compatibility with the target microcontroller's SPI voltage levels and timing constraints before finalizing procurement.

Controllers Selection Notes

Select this component when a dedicated hardware solution for CAN protocol handling is required to offload processing tasks from the main CPU. It is suitable for applications needing robust message prioritization and filtering without complex software implementation. Consider the available transmit and receive buffer depths relative to the expected network traffic load.

Controllers Part Context

This part belongs to the MCP2515 family of stand-alone CAN controllers manufactured by Microchip Technology. It serves as a bridge between standard SPI-based microcontrollers and CAN bus networks, simplifying integration by handling lower-layer protocol functions internally.

Controllers Replacement Considerations

Direct pin-compatible replacements within the same package are limited. Verify if alternative CAN controllers from other manufacturers require level shifting or firmware adaptation due to differing register maps or SPI command sets.