BUY AT93C46DN-SH-B https://www.utsource.net/itm/p/4147046.html
Three-wire Serial EEPROM 1K (128 x 8 or 64 x 16)
Description: AT93C46DN-SH-B is an 8-pin SOP package EEPROM device manufactured by Atmel. Features: * 1Kbits of memory storage * Low voltage operation (2.7V to 5.5V) * High speed clock frequency (up to 10MHz) * Low power consumption * Endurance: 100,000 write/erase cycles * Data retention: 40 years Applications: AT93C46DN-SH-B is used in a variety of applications, including automotive, industrial, medical, consumer, and communication applications, where non-volatile memory is needed. It can be used for storing configuration data, calibration data, and other data that needs to be retained even when power is removed. (For reference only)