Microchip 256 kB Serial-SPI EEPROM 50 ns 8-Pin SOIC 2.5-5.5 V 25LC256-I/ST

Microchip 25LC256-I/ST is a 256 kilobyte (Kb) electrically erasable programmable read-only memory (EEPROM) designed for non-volatile data storage. It features a fast 50 nanosecond random access time and uses a Serial Peripheral Interface (SPI) bus for communication, requiring minimal pins including clock input (SCK), data in (SI), data out (SO), chip select (CS), and hold (HOLD) for communication control.

The EEPROM operates over a wide voltage range from 2.5 V minimum to 5.5 V maximum, making it compatible with various power systems and ideal for industrial, automotive, and embedded electronics applications. Its extended operating temperature range from -40°C to +85°C supports reliable use in extreme environmental conditions.

Built with low power CMOS technology, it consumes 6 mA during read operations at 10 MHz clock frequency, 5 mA during writes, and only 1 microampere in standby mode, optimizing power consumption in battery-operated devices.

This device incorporates self-timed erase and write cycles with a maximum duration of 5 milliseconds and features advanced write protection including power-on/off data protection circuitry, a write-enable latch, and a write-protect pin to safeguard memory contents.

Featuring high endurance, it supports up to 1,000,000 erase/write cycles and retains data reliably for over 200 years. ESD protection rating exceeds 4000 V, ensuring device integrity from electrostatic discharge damage.

256 kB Serial SPI EEPROM for non-volatile storage. Fast 50 ns maximum random access time. Wide operating voltage from 2.5 V to 5.5 V. Industrial operating temperature range (-40°C to +85°C). Low power consumption with CMOS technology.

Self-timed erase/write cycles and built-in write protection. High endurance and data retention above 200 years. Automotive standard AEC-Q100 qualified. Compact 8-pin SOIC surface-mount package.

This Microchip EEPROM module is suitable for industrial, automotive, communication, embedded systems, and consumer electronics applications that require reliable data retention and fast access speeds. It integrates easily on printed circuit boards using surface mount technology and complies with RoHS standards ensuring environmental safety.

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