CAN FD transceiver
Microchip Technology (US) has announced a family of CAN FD transceivers, the MCP2561/2FD. These transceivers can serve both the CAN and CAN FD protocol.
AS AN INTERFACE BETWEEN A CAN PROTOCOL CONTROLLER and the physical two-wire CAN network, this product family provides a path for the CAN FD networks that are increasingly in demand. In-vehicle networking growth continues to be driven by the need for electronic monitoring and control. As application features in power train, body and convenience, diagnostics and safety increase, more Electronic Control Units (ECUs) are being added to existing CAN networks, causing automotive OEMs to become bandwidth limited. In addition, the end-of-line programming time for ECUs is on the rise due to more complex application programs and calibration, which raises production line costs.
The emerging CAN FD protocol solves these issues by increasing the maximum data rate while expanding the data field from 8 data bytes up to 64 data bytes.
With their robustness and data-rates of up to 8 Mbit/s, the transceivers enable customers to implement and realize CAN FD. These transceivers have one of the industry’s lowest standby current consumption (< 5 µA typical), helping meet ECU low-power budget requirements. Additionally, these devices support operation in the -40 °C to 150 °C temperature range, enabling usage in harsh environments.
“Microchip has been involved since the beginning of CAN FD, planning and developing products to help serve the overall system needs,” said Bryan J. Liddiard, marketing vice president of Microchip’s Analog and Interface Products Division. “Our transceivers are defined and developed with a global perspective, allowing our customers to sell their end products across all regions of the world. This new family achieves unprecedented CAN FD performance levels while maintaining industry-leading robustness and overall quality.”
Block diagram of the CAN FD transceivers
The family of CAN FD transceivers is available in 8-pin PDIP, SOIC, and 3 mm x 3 mm DFN (leadless) packages, providing additional design flexibility for space-limited applications. The family also provides two options: The MCP2561FD comes in an 8-pin package and features a Split pin. This Split pin helps to stabilize the common mode in biased split-termination schemes. The MCP2562FD is available in an 8-pin package and features a Vio pin. This Vio pin can be tied to a secondary supply in order to internally level shift the digital I/Os for micro-controller interfacing. This is beneficial when a system is using a micro-controller at a Vdd less than 5 V (for example, 1,8 V or 3,3 V), and eliminates the need for an external level translator, decreasing system cost and complexity.
These transceivers will be used to test CAN FD network designs at a CAN FD plug fest organized by CAN in Automation, on Tuesday March 24th in Detroit, Michigan. Both Kvaser (Sweden) and Intrepid Control Systems (US) will use Microchip’s transceivers on their respective CAN FD boards at this event.
The MCP2561FD and MCP2562FD transceivers are both available now for sampling and volume production in 8-pin PDIP, SOIC and 3 mm x 3 mm DFN packages, starting at $0,69 each, in 5000-unit quantities.
News and reports