M95640-A125

The M95640-A125 is a high-performance serial 64 Kbit EEPROM from STMicroelectronics, designed for reliable data storage in embedded systems. It features a 64 Kbit memory capacity organized as 8,192 words × 8 bits, enabling efficient storage of configuration settings, calibration data, or user parameters. The device operates with a single power supply ranging from 1.7 V to 5.5 V, making it compatible with a wide range of voltage domains in modern electronics. This EEPROM uses the SPI-compatible serial interface (mode 0 and 3), allowing for simple integration into microcontroller-based designs without requiring complex parallel interfaces. Its communication speed supports up to 10 MHz, ensuring fast read and write operations while maintaining compatibility with standard SPI protocols. The device also includes hardware write protection via a dedicated WP pin, preventing accidental overwrites during normal operation—critical for safeguarding vital system data. The M95640-A125 offers robust endurance with up to 1 million erase/write cycles and data retention of up to 200 years at 25°C, ensuring long-term reliability in demanding environments. It includes built-in write protection mechanisms such as byte-level programming, page write operations, and sector erase capabilities, providing flexible memory management options. Additionally, the device supports both standard and fast read modes, optimizing performance based on application requirements. Designed for low-power applications, the M95640-A125 consumes only 1 mA in active mode and less than 1 μA in standby mode, making it ideal for battery-powered devices like portable instruments, smart meters, medical equipment, and industrial sensors. Its compact 8-pin SO8 package enhances PCB space efficiency, while its industrial temperature range (-40°C to +85°C) ensures stable operation across diverse environmental conditions. Common applications include storing calibration coefficients in automotive sensors, firmware updates in consumer electronics, and operational logs in industrial control systems. The device’s combination of high reliability, low power consumption, and ease of integration makes it a preferred choice for designers seeking dependable non-volatile memory solutions in space-constrained and energy-sensitive applications.