New family of CAN FD transceivers exceeds global automotive requirements

25-03-2015 | Microchip Technology | Semiconductors

A new family of CAN FD (Controller Area Network Flexible Data-Rate)
transceivers, the MCP2561/2FD Series has been introduced by Microchip. As
an interface between a CAN protocol controller and the physical two-wire CAN
bus, the transceivers can serve both the CAN and CAN FD protocols. The
product family not only helps automotive and industrial manufacturers with
today’s CAN communication needs, but also provides a path for the newer CAN
FD networks that are increasingly in demand, says the company.

In-vehicle networking growth continues to be driven by the need for
electronic monitoring and control. As application features increase in power
train, body and convenience, diagnostics and safety, more Electronic Control
Units (ECUs) are being added to existing CAN buses, 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 programmes and
calibration, which raises production-line costs. The emerging CAN FD bus
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 industry-leading features, including data rates of
up to 8 Mb/s, the MCP2561/2FD transceivers enable users to implement and
realise the benefits of CAN FD. The new transceivers have one of the
industry’s lowest standby current consumption (<5µA typical), helping to
meet ECU low-power budget requirements. In addition, the devices support
operation in the -40C to 150C temperature range, enabling usage in harsh
environments.

The family of MCP2561/2FD CAN FD transceivers is available in 8-pin PDIP,
SOIC and 3mm x 3mm 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 stabilise 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 easy microcontroller
interfacing. This is beneficial when a system is using a microcontroller at
a Vdd less than 5V (for example, 1.8V or 3.3V), and eliminates the need for
an external level translator, decreasing system cost and complexity. The
MCP2561FD and MCP2562FD transceivers are both available now for sampling and
volume production, says the company.

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