Microchip 256 kB Serial EEPROM, 50 ns 8-Pin SOIC Serial-SPI 25AA256-I/SN

Microchip 25AA256-I/SN is a high-performance 256 kB Serial EEPROM with a fast 50 ns maximum random access time, implemented in an 8-Pin Small Outline Integrated Circuit (SOIC) package designed for surface mount technology. Operating over a voltage range of 1.8V to 5.5V, it supports a Serial Peripheral Interface (SPI) clock frequency of up to 10 MHz, enabling rapid data transfers in electronic and embedded systems.

This device features a 32,768 x 8-bit memory organization, allowing for efficient storage and retrieval of data bits, with 64-byte page self-timed erase and write cycles completed within 5 milliseconds. It offers robust data protection through power-on/off protection circuitry, write enable latch, and a write-protect pin, alongside block write protection configurable to protect none, one-quarter, half, or the entire memory array.

Designed to endure rigorous industrial and automotive environments conforming to the AEC-Q100 standard, it maintains reliable functionality across a temperature range of -40°C to 85°C. The chip exhibits an impressive data retention capability exceeding 200 years and endures more than 1 million erase/write cycles, ensuring longevity in critical applications.

Power consumption is optimized with a typical read current of 6 mA and a minimal standby current of 1 microampere, making it suitable for low-power embedded systems. Physical dimensions of 4.9 mm length and 6 mm width in the SOIC package contribute to compact device integration. ESD protection exceeds 4000 volts, enhancing device reliability against electrical surges.

Operates between 1.8V and 5.5V supply voltage. Maximum clock frequency of 10 MHz for rapid SPI communication. 64-byte page self-timed erase/write cycles completed in 5 ms maximum. Data retention exceeds 200 years with >1M erase/write cycle endurance.

Built-in protection circuitry and configurable block write protection. Temperature operating range from -40°C to 85°C meets automotive standards. Typical operating read current is 6 mA; standby current is 1 μA. Conforms to AEC-Q100 automotive reliability standard.

Physical dimensions suitable for compact PCB layouts.

This Microchip EEPROM is ideal for industrial, automotive, consumer electronics, and IoT applications requiring reliable non-volatile memory storage with fast access and robust data protection. EnvMart recommends this device for semiconductor component selection in embedded systems, data logging, and firmware storage.