M24C16-A125

The M24C16-A125 is a 16-kilobit (2 kilobytes) serial electrically erasable programmable read-only memory (EEPROM) manufactured by STMicroelectronics. It operates on a 2.5V to 5.5V power supply range, making it suitable for both low-power and standard voltage applications. The device uses an I²C-compatible two-wire interface (SDA and SCL), enabling simple integration into microcontroller-based systems without requiring additional hardware. With a maximum clock frequency of 400 kHz, it supports fast data transfer while maintaining reliable communication. This EEPROM features a high endurance capability of up to 1 million write cycles and retains data for up to 200 years at room temperature, ensuring long-term reliability in demanding environments. Its memory organization consists of 2,048 words of 8 bits each, organized into 16 pages of 16 bytes each, allowing efficient block-level programming and addressing. The chip includes built-in write protection mechanisms such as hardware write-protect pins and software lock/unlock commands, enhancing security against accidental overwrites or unauthorized access. Designed for robust performance, the M24C16-A125 is available in various packages including SO8, TSSOP8, and WLCSP8, offering flexibility for different board layouts and space constraints. It also features a low-power standby mode with current consumption as low as 1 μA, ideal for battery-powered devices. The operating temperature range spans from -40°C to +85°C, making it suitable for industrial, automotive, and consumer electronics applications. Common use cases include storing configuration settings, calibration data, and firmware parameters in embedded systems such as smart meters, medical devices, industrial controllers, and consumer appliances. Its compatibility with standard I²C protocols simplifies integration into existing designs, while its non-volatile nature ensures that critical data persists even during power loss. Additionally, the device supports multi-master configurations, allowing multiple controllers to share the same bus without conflict.