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STMicroelectronics L9963T Automotive SPI to Isolated SPI Transceiver is designed to create a communication bridge between devices located into different voltage domains. The L9963T transfers communication data incoming from a classical 4-wire based SPI interface to a 2-wire isolated interface (and vice versa).
The L9963T transceiver supports the transformer and capacitive isolation since the isolated signal generated according to a proprietary protocol is suitable for transmitting over both decoupling circuitries. The L9963T is configured either as Slave or as Master of the SPI bus and supports any protocol made of SPI frames 8 to 64 bit long. The transceiver manages the transfer of the information without performing any protocol check.
The device is natively compatible with both 3.3V and 5V logic and L9963 isolated SPI, allowing its usage in the BMS applications.
