BUY 24C256BN-SU18 https://www.utsource.net/itm/p/1872043.html
256K IIC CMOS serial EEPROM4.5~5.5V,256K,100K,EEPROM
Description: 24C256BN-SU18 is a 256K bit Serial Electrically Erasable Programmable Read-Only Memory (EEPROM) manufactured by Atmel. Features: - Low-voltage and Standard-voltage Operation - 8-pin SOP package - 256K bits of memory - 2-wire Serial Interface - Schmitt Trigger, Filtered Inputs for Noise Suppression - Bidirectional Data Transfer Protocol - 1 MHz (5.0V) and 400 kHz (2.5V) Clock Rates - Self-timed Write Cycle (5 ms max) - High Reliability - Endurance: 1 Million Write Cycles - Data Retention: 100 Years Applications: - Automotive - Industrial - Consumer - Computer - Communications - Medical (For reference only)