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NXP has announced the LPC11C22 and LPC11C24, which enable the adoption of low-cost CAN in a variety of industrial and automation applications for factories, buildings and in the home.

Offered as a unique System-in-Package solution, the LPC11C22 and LPC11C24 with integrated TJF1051 CAN transceiver combine complete CAN functionality into a low-cost LQFP48 package.

They are said to be the industry’s first integrated high-speed CAN Physical Layer transceiver and microcontroller with easy-to-use on-chip CANopen drivers.

CAN is recognised as a robust and reliable communication channel for rugged environments.

Integrating the CAN transceiver on board increases system reliability and quality, reduces electrical interconnect and compatibility issues, and reduces board space by over 50 per cent while adding less than 20 per cent to the MCU cost.

The LPC11C22 and LPC11C24 are the latest additions to the LPC11C00 series of CAN 2.0B-compliant controllers.

The CAN Physical Layer is designed for up to 1Mbit/s High-Speed CAN networks and delivers optimal performance for industrial applications with state-of-the-art Electrostatic Discharge (ESD) protection, improved Electromagnetic Compatibility (EMC) and low-power operation.

The LPC11C22/C24 CAN Physical Layer is fully compliant with the ISO 11898-2 standard for two-wire balanced signalling and is optimised for automotive sensor applications and rugged industrial CAN networks.

High ESD handling capability on bus pins is combined with additional fail-safe features such as high DC handling capability on CAN pins, Transmit Data dominant time-out function, undervoltage detection and thermal protection.

Low-power management is fully integrated and the transceiver can disengage from the bus when it is not powered up.

CANopen drivers are provided in on-chip ROM, with APIs enabling users to rapidly adopt the LPC11C22/C24 into embedded networking applications based on the CANopen standard.

This standardised CANopen layer (EN 50325) is especially well suited for embedded networks in all kinds of control, such as machines and lifts, making proprietary or application-specific application layers obsolete.

Incorporating CANopen drivers in on-chip ROM reduces overall risk and effort while providing design engineers with the added advantage of reduced operating power, as well as secure and safe bootloading via CAN.

With the security and peace of mind offered by ROM-based drivers, updating Flash via In System Programming (ISP) over the CAN-bus provides the whole range of functionality – from programming blank parts in production to changing system parameters and full in-field re-programmability.

NXP Semiconductors

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