It's called the MLX81143 and implements CAN-over-UART to drive individual LEDs, and the company claims it offers real-time color drift compensation caused by environmental changes and color mixing accuracy of less than 1%.
The product flyer promises “real-time update of >800 RGB LEDs without delay”.
Its 'MeLiBu' communication interface uses physical CAN-FD.
Qualification is AEC-Q100 compliant and part ID is ASIL compliant. It meets ISO 26262 functional safety requirements and supports ASIL B integration.
On board there is 32 KB of flash memory, 2 KB of RAM and 512 bytes of eeprom. Packaging:
5 x 5mm 32-pin QFN.
And. Its specification is only available in exchange for contact information.