The BU9877FV is a 2-k bit EEPROM with a write protect function, developed for DIMMs (Dual In-line Memory Modules) containing a synchronous DRAM. This IC stores IDs in memory in order to enable Plug & Play functions.

Features
1) 2-k bit EEPROM with configuration of 256 words × 8 bits.
2) Compliance with SPD data format.
3) Dual-line serial (I2C bus) interface.
4) Protective functions enabled by a one-time ROM and write protect pin.
    Soft ware protection. as a one-time ROM: 00 to 7Fh.
    Hard ware protection (WP pin): 80 to FFh.
5) Compact SSOP-B 8-pin package.

Applications
    168-pin and 144-pin DRAM modules containing synchronous DRAM