16 Kbit I²C EEPROM — 400 kHz bus, wide supply, 8-SOIC
The M24C16-WMN6P is a 16 Kbit serial EEPROM from STMicroelectronics, organized as 2K x 8 bits, accessed via an I²C interface running at up to 400 kHz. The 8-SOIC package is the standard 150-mil footprint, widely used for configuration storage, calibration parameters, and small data logs in industrial and consumer gear.
NRND — sourcing window is narrowing
For existing designs, the part remains available through franchised and independent channels. This is a part to buy against a firm production forecast, not to stockpile speculatively; the spot premium is modest today but will climb as the installed base ages.
900 ns access time and 5 ms write cycle — what they mean on the bus
The 900 ns access time is the delay from the I²C address byte to the first data byte. The 5 ms write cycle time applies per page or per byte; a 16-byte page write takes the same 5 ms as a single byte, so group writes for efficiency.