Dual CAN FD Interface Board With Real Time Clock For Raspberry Pi

Posted by Industry News on Mar 21st 2019

CAN FD (CAN with Flexible Data-Rate) is an extension to the original CAN Bus (Classic CAN) protocol specified in ISO 11898-1. CAN FD was created to provide gains in bandwidth within automotive and industrial networks.

The CAN FD protocol has moved application software closer to "real time" through the reducing delays between instruction and transfer of data (latency) and higher bandwidth. CAN FD provides more storage capacity within the CAN Bus data frame.

While classic CAN holds a maximum of eight data bytes in a frame, CAN FD maintains up to 64 bytes. This is achieved through a decrease in relative overhead and improvements to software simplicity and efficiency when transmitting large data objects.

CAN FD also has reduced the number of undetected errors by increasing CRC-algorithm performance. CAN FD is compatible with existing CAN 2.0 networks, allowing the new protocol to function on the same network as classic CAN. CAN FD has been estimated to transmit data up to 30 times faster than classic CAN.

The PiCAN FD Duo board by Copperhill Technologies provides two-channel CAN-Bus FD capability for the Raspberry Pi. It uses the Microchip MCP2517FD CAN controller with MCP2562FD CAN transceiver. Connection are made via 4-way screw terminal. A real-time clock with battery back up is also on the board.

The board comes with an optional 5 VDC 1A SMPS that also powers the Raspberry Pi via screw terminals. The Switch mode power supply (SMPS) allows connecting an input voltage range of 6 VDC to 20 VDC suitable for industrial and automotive applications and environments.

Features

Microchip MCP2517FD CAN Controller
Microchip MCP2562FD CAN transceiver
Arbitration Bit Rate u pto 1Mbps
Data Bit Rate upto 8Mbps
CAN FD Controller modes
Mixed CAN 2.0B and CAN FD mode
CAN Bus 2.0B mode
Conforms to ISO 11898-1:2015
High speed SPI Interface
CAN Bus connection via 4 way terminal
120 Ohm terminator ready
Serial LCD ready
LED indicator
Four fixing holes, comply with Raspberry Pi Hat standard
SocketCAN driver, appears as can0 to application
Interrupt RX on GPIO25 and 05
RTC with battery backup (battery not included)
5 VDC 1A SMPS to power Raspberry Pi and accessories from screw terminal
- Reverse polarity protection
- High efficiency switch mode design
- 6 VDC to 20 VDC input range

More Information

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