A superior MCP2515 library reproduces both the electrical and functional behavior of the real device.
High fidelity enables users to test firmware interactions (SPI transactions, register-level control), confirm ISR logic responding to INT, and validate CAN message flows under simulated bus conditions.
The most reliable way to simulate CAN Bus projects in Proteus is actually not to use the MCP2515 directly. Instead, use the COMPIM model combined with a virtual CAN terminal.
However, if you specifically need the MCP2515 hardware interface for code logic:
Option A: The "MCP2551" Alternative for Physical Layer If your goal is to simulate two microcontrollers talking to each other:
Option B: Adding a Custom Library (The "Better" Library) There are community-created libraries that work significantly better than the default. The most popular one is often packaged with Arduino CAN shields for Proteus.
How to install a better library:
For advanced users, Microchip provides a behavioral Verilog model of the MCP2515. You can compile this into a Proteus VSM DLL using the Proteus SDK. This is the gold standard for "better" because it is vendor-accurate, but it requires programming knowledge.
Once you have acquired a better .LIB or .IDX file, follow this process to avoid the "Component not found" error.
To fix this, the community has developed a compact, compiled MCP2515 module for Proteus. This library typically comes in a .LIB file format and simulates the MCP2515 behavior, allowing you to send and receive CAN frames in the schematic environment.