M95M01-A125

The M95M01-A125 is a high-performance serial 1 Mbit (128 K × 8) EEPROM from STMicroelectronics, designed for reliable data storage in embedded systems. It operates on a 2.7V to 5.5V supply voltage range, making it compatible with both 3.3V and 5V logic levels, which enhances its flexibility across various industrial and consumer applications. The device features a fast read access time of up to 1.5 μs, enabling efficient data retrieval without compromising system responsiveness. This memory utilizes the SPI-compatible serial interface (Mode 0 and Mode 3), allowing seamless integration into microcontroller-based designs with minimal pin count requirements. Its write protection mechanism includes hardware write-protect pins and software-based block-level write protection, ensuring data integrity against accidental overwrites or unauthorized modifications. Additionally, the M95M01-A125 supports sector-based erase operations, providing granular control over memory management and improving efficiency during firmware updates or configuration changes. With an endurance of up to 1 million write/erase cycles and data retention of up to 200 years at 25°C, this EEPROM delivers long-term reliability even in harsh environments. It is manufactured using advanced CMOS technology, resulting in low power consumption—typically 4 mA in active mode and less than 1 μA in standby mode—which makes it ideal for battery-powered or energy-sensitive applications. Common applications include automotive systems, industrial control modules, consumer electronics, medical devices, and smart meters. In automotive contexts, it stores calibration parameters, diagnostic codes, and user settings; in industrial settings, it retains configuration data for programmable logic controllers (PLCs); and in consumer products, it maintains user preferences and firmware versions. Its robust design meets AEC-Q100 Grade 1 qualification standards, confirming suitability for demanding automotive environments. The M95M01-A125 is available in a compact 8-pin SO8 package, facilitating easy surface-mount assembly and reducing PCB footprint. It also includes built-in self-timed write cycles, eliminating the need for external timing components and simplifying system design. With comprehensive ESD protection and immunity to electromagnetic interference (EMI), it ensures stable operation in electrically noisy environments.