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CAN FD and Ethercat on-chip

CiA member Texas Instruments (TI) has launched the F2838x MCU, which is suitable for AC servo drives and other industrial automation devices. The 32-bit component is part of the C2000 micro-controller family.

The MCU can be paired with the company’s TCAN4550 system base chip to realize additional CAN FD ports with on-chip transceivers (Photo: Texas Instruments)

The introduced MCUs enable designers to use a single chip to implement connectivity, including Ethercat, Ethernet, and CAN FD. Devices with communication interfaces often require an external application-specific integrated circuit (ASIC) or dedicated host control microprocessor, which limits the flexibility of the design architecture, adds complexity, and takes up space on the board. By integrating three industrial communication protocols, the launched MCUs give designers the ability to tailor one micro-controller to the unique needs of each device. A key component in achieving this is the connectivity manager, a Cortex-M4-based sub-controller, which offloads processing-intensive communications and optimizes connectivity. In addition to these capabilities, the MCUs offer enhanced real-time control performance and higher flexibility than previous C2000 series MCUs.

For electrically isolated architectures, the MCUs use a fast serial interface with eight receiving channels to facilitate chip-to-chip communication at up to 200 Mbit/s using minimal pins. Designers can build on this high-level of integration in CAN FD designs and quickly increase the number of available CAN FD ports by pairing them with a TI system basis chip (SBC), such as the TCAN4550 with integrated CAN FD controller and transceiver.

With a 64-bit floating-point unit and fast integer division hardware, the MCU’s central processing unit allows for differentiated capability and high-precision designs. For servo drive applications, the fast current-loop technology processes field-oriented control in less than 500 ns to enable more precise position control. The micro-controller also integrates a single-ended 16-bit analog-to-digital converter, which doubles the number of available channels compared to previous C2000 MCUs to minimize external components, minimize system latency and maximize control-loop accuracy. An expanded configurable logic block enables designers to customize peripherals and removes or reduces the need for a field-programmable gate array.

Pre-production samples are now available through the TI store in a 337 ball-grid-array package. Developers can get started with a development kit. Software development kits for motor control and digital power will be released by the end of June.


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Texas Instruments


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