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The Atmel 4 Kbit two-wire serial EEPROM with full memory write-protect, supports up to four devices on a single two-wire bus. Memory organized as 512 words x 8 bits. Optimized for industrial and commercial applications where low-power and low-voltage operations are essential. The EEPROM is available in space-saving packaging options and 1.8V (1.8V to 5.5V) version.