TI brings CAN FD to SPI bus

June 13, 2019 // By Ally Winning
TI brings CAN FD to SPI bus
Texas Instruments has launched a solution that the company claims is the industry’s first to integrate a controller and transceiver to provide CAN FD functionality.

The TCAN4550-Q1 uses any MCU’s Serial Peripheral Interface (SPI) bus to implement CAN FD, increasing the number of available CAN FD bus ports in an automotive system.

The new solution has been designed to meet the high-bandwidth and data-rate flexibility needs of in-vehicle networks, and requires minimal hardware changes to implement a CAN FD interface or increase the amount of CAN FD bus ports in a system. The chip works with any MCU that has a free SPI interface and can reduce system cost by using an MCU without an integrated CAN bus or to add an extra CAN interface to an MCU with a CAN controller.

Part of TI’s system basis chip (SBC) program, the TCAN4550-Q1 integrates many of the components required to design a system, reducing BOM and increasing system performance. The SBC includes ±58-VDC bus fault protection, 125-mA LDO linear regulator, watchdog timer and fail-safe modes. The LDO also has an external output that can power additional components. To enable faster throughput during vehicle assembly, the chip can be programmed at a higher data rate of 8 Mbps.

More information


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