The MCP2517FD is a cost-effective and small-footprint External CAN FD Controller that can be easily added to a microcontroller with an available SPI interface.  Therefore, a CAN FD channel can be easily added to a microcontroller that is either lacking a CAN FD peripheral or that doesn't have enough CAN FD channels.

The MCP2517FD supports both CAN frames in the Classical format (CAN 2.0B) and CAN Flexible Data Rate (CAN FD) format as specified in ISO11898-1:2015.

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Not recommended for new designs. Consider using the pin- and functionally compatible MCP2518FD

Please consider this device MCP2518FD

• Conforms to ISO11898-1:2015
• Supports both CAN 2.0B and CAN FD
• Arbitration Bit Rate up to 1 Mbps
• Data Bit Rate up to 8 Mbps
• Up to 20MHz SPI Clock Speed
• Flexible FIFO setup
• 31 FIFOs configurable as transmit or receive
• 32 Flexible Filter and Mask Objects
• One Transmit Queue
• Misc
• 32-bit Time Stamp
• Bus Health Diagnostics and Error Counters
• Packages: VDFN14 (Wettable Flanks), SOIC14
• Temperature Range: -40°C to +150°C
• Low power consumption
• VDD: 2.7V-5.5V
• Active Current Max: 12mA @ 5.5V, 40 MHz CAN Clock
• Sleep Current: 10uA, Typical
• Built-In Safety features
• Loopback mode
• SPI commands with CRC to detect noise on SPI interface
• ECC for the SRAM 1 bit correction, 2 bit detection