Dual Isolated CAN FD HAT for Raspberry Pi

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The 2-Channel CAN bus expansion HAT, designed for Raspberry Pi, supports two CAN FD (CAN with Flexible Data-Rate) ports with a data rate of up to 8Mbps. It features multi onboard protection circuits, high anti-interference capability to assure reliable operation and make it suitable for applications in the field of automotive devices and industrial automation.

The CAN FD HAT adds CAN Bus capabilities to your Raspberry Pi, not only the original CAN 2.0 protocol, but also the CAN FD extension, with up to 8Mbps data rate, and higher data throughput.

Thanks to multiple onboard protection circuits, include 500W lighting surge, ESD, short circuit protection, and electrical isolation, it makes the communication safer and more reliable.

To support automotive and industrial applications more effectively, the board's power supply accepts an input range of 8 to 26 VDC.

Features

• Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards
• Supports both traditional CAN2.0 and CAN FD protocols, up to 8Mbps data rate
• Breakout SPI control pins, for connecting with host control boards like STM32/Arduino
• Onboard electrical isolation, up to 5KV isolated voltage, high anti-interference capability, stable operation
• Onboard lighting proof, ESD, short circuit protection, more safe communication
• Onboard voltage translator, select 3.3V/5V operating voltage by jumper
• Onboard 120Ω terminal resistor, configured by jumper

Specifications

• CAN Bus controller: MCP2517FD
• CAN Bus transceiver: MCP2562FD
• Communication interface: SPI (two channels independent SPI by default, swith to one channel SPI by soldering)
• Power supply: external power input terminal, or Raspberry Pi
• Power input terminal voltage: 8~26 VDC
• Operating voltage: 5VDC
• Logic level: 3.3 VDC/5 VDC
• Dimensions: 65.0 x 56.5 mm

Dual Isolated CAN FD HAT - Components

1. MCP2517FD CAN controller
2. MCP2562FD CAN transceiver
3. SI8642ED digital isolator
4. MP1584EN power chip
5. RT9193-33 power chip
6. B0505LS-1W power supply isolation module
7. Raspberry Pi GPIO connector: for connecting Raspberry Pi
8. CAN Bus terminal
9. External power input terminal: DC 8~26V input
10. MCU control pin: for connecting with host control boards like Arduino
11. 120Ω terminal resistor configuration
12. 3.3V/5V logic level selection
13. CAN Bus operating mode selection:
    A: CAN_0 and CAN_1 use two channels independent SPI (default)
    B: CAN_0 and CAN_1 share one common SPI
14. Power indicator
15. 2A fast auto-recovery fuse
16. Power supply anti-reverse diode
17. Power supply anti-countercurrent diode
18. Follow current diode
19. SM24CANB TVS diode array

Dual Isolated CAN FD HAT - Dimensions

Development Resources

• Manufacturer Wiki Page...
• MCP2517FD and MCP2518FD CAN Controller Library for Arduino (in CAN FD mode)...
• CAN Bus Controller MCP2517FD User Manual (PDF)...
• CAN Bus Transceiver MCP2562FD User Manual (PDF)...
• Dual Isolated CAN FD HAT for Raspberry Pi - Schematic (PDF)...
• WiringPi - GPIO Interface library for the Raspberry Pi...

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