16 Kbit of non-volatile storage for the ECU
The STMicroelectronics M24C16-DRDW8TP/K is a 16 Kbit serial EEPROM organized as 2K x 8 bits, communicating over an I²C bus at up to 1 MHz. It is qualified to AEC-Q100, making it suitable for automotive electronics such as engine control units, transmission controllers, and body-domain modules where non-volatile parameter storage must survive power loss and temperature extremes.
The 450 ns access time is typical for this density and bus speed.
The 4 ms write cycle time per page is typical for this generation; the part uses a page-write buffer to reduce bus overhead when updating multiple bytes.