MCP2515 CAN Bus Module with TJA1050 Transceiver

MCP2515 CAN Bus Module with TJA1050 Transceiver is an essential communication interface for projects that need to interact with automotive or industrial control networks. This small, powerful board integrates the Microchip MCP2515 CAN controller and the high-speed NXP TJA1050 CAN transceiver, giving you a complete, isolated solution for connecting a microcontroller (like an Arduino or Raspberry Pi) to a Controller Area Network (CAN). The MCP2515 handles the complex CAN protocol stack, managing message filtering and transmission, while the TJA1050 ensures reliable, robust communication over the physical two-wire bus. Engineers and advanced hobbyists utilize this module to read diagnostic trouble codes (DTCs), monitor engine data, and establish reliable industrial automation links. You can start developing CAN applications quickly and reliably with this module.

Key Features:

• Integrated CAN Solution: Combines the MCP2515 CAN controller and TJA1050 high-speed CAN transceiver on a single, compact board.
• SPI Interface: Uses the popular and fast Serial Peripheral Interface (SPI) for easy communication with most microcontrollers.
• High-Speed Communication: Supports standard CAN communication rates up to 1 Mbit/s, crucial for high-data-rate applications.
• Message Buffering: Features three transmit buffers and two receive buffers, allowing the module to queue messages efficiently.
• Filtering and Masking: Implements two acceptance masks and six acceptance filters to efficiently screen out irrelevant messages from the CAN bus, reducing the load on your microcontroller.
• Terminal Resistor Jumper: Includes an onboard 120-ohm termination resistor, which you can easily enable or disable using a jumper to match your network topology.

Technical Specifications:

• CAN Controller IC: Microchip MCP2515
• CAN Transceiver IC: NXP TJA1050
• Communication Protocol: CAN V2.0B (Standard and Extended Data Frames)
• Data Rate: Up to 1 Mb/s
• Controller Voltage: DC 5V (for the MCP2515)
• Transceiver Voltage: DC 12V (from the CAN bus, handled by TJA1050)
• Oscillator: 8 MHz Crystal
• Interface: SPI (SCK, MOSI, MISO, CS)

Mechanical Specifications:

• Connectors: Screw terminal for CAN H and CAN L, and a standard 6-pin header for the SPI interface.
• Mounting: Includes four mounting holes for easy integration into project enclosures.
• LED Indicator: Power LED for quick status verification.

Dimensions:

• Length: ~40 mm
• Width: ~28 mm
• Height: ~11 mm

Pinout and Wiring:

• VCC: Power supply input (5V DC) for the module logic.
• GND: Ground connection.
• CS: Chip Select (connects to any digital I/O pin on the microcontroller).
• SO (MISO): Master In Slave Out (SPI Data Output).
• SI (MOSI): Master Out Slave In (SPI Data Input).
• SCK: Serial Clock (SPI Clock).
• CAN H: Connects to the high line of the CAN bus.
• CAN L: Connects to the low line of the CAN bus.
• Wiring Note: Connect VCC to the microcontroller’s 5V supply. Ensure you connect the CAN H and CAN L lines to the corresponding wires in the CAN network. If the module is at either end of the CAN bus, enable the 120-ohm termination resistor jumper.

Datasheet Reference:

• Download MCP2515 Datasheet

Commonly Used in:

• Automotive Diagnostics: Creating custom tools to read and analyze data from a vehicle’s OBD-II port.
• Industrial Control Systems: Establishing robust communication links between PLCs, sensors, and actuators on the factory floor.
• Hobby Robotics: Developing communication backbones for advanced robotic platforms that require distributed control.

Applications:

• Data Logging: Record engine control unit (ECU) parameters and sensor data in real-time.
• Gateway Device: Build a bridge to translate CAN messages to other protocols like Wi-Fi or Ethernet.
• Custom Dashboards: Display vehicle metrics (RPM, speed, temperature) on a custom screen using data read from the CAN bus.

Equivalent Models:

• CAN-BUS Shield for Arduino: A shield form-factor version, often utilizing the same MCP2515/TJA1050 chips, designed for direct stacking onto Arduino UNO boards.
• Microchip MCP25625: An alternative single-chip solution that integrates both the CAN controller and transceiver into one IC.

Package Includes:

• 1 x MCP2515 CAN Bus Module with TJA1050 Transceiver