View s524c20d81 datasheet:

S524C20D11/20D21/80D41/80D81 1K/2K/4K/8K-bit Serial EEPROM Data Sheet OVERVIEW The S524C20D11/20D21/80D41/80D81 serial EEPROM has a 1,024/2,048/4,096/8,192-bit (128/256/512/1,024- byte) capacity, supporting the standard I2C™-bus serial interface. It is fabricated using Samsung’ s most advanced CMOS technology. One of its major feature is a hardware-based write protection circuit for the entire memory area. Hardware-based write protection is controlled by the state of the write-protect (WP) pin. Using one- page write mode, you can load up to 16 bytes of data into the EEPROM in a single write operation. Another significant feature of the S524C20D11/20D21/80D41/80D81 is its support for fast mode and standard mode. FEATURES I2C-Bus Interface Operating Characteristics • Two