The Microchip serial electrically erasable and programmable read only memory (EEPROM) organized as 128/256/512 words of 8 bits each. The device is optimized for use in many industrial and commercial applications where low‑power and low‑voltage operation are essential. The device is available in space-saving 8‑lead SOIC package. The packages operate from 1.8 V to 5.5 V.

Serial peripheral interface SPI compatible
Supports SPI modes 0 (0,0) and 3 (1,1)
Data sheet describes mode 0 operation
Low-voltage operation
8 Byte page mode
Block write protection
Protect 1/4, 1/2 or entire array
Write protect WP pin and write disable instructions for both hardware and software data protection
Self-timed write cycle within 5 ms maximum
ESD protection > 4,000 V