AT24Cxxx group of I2C EEPROM with possibility to set address and write protect mode.
Configuration has one switch group (A0, A1, A2) and one switch WP with two state 0 (short cut between middle pin and pin signed 0) and 1 (short cut between middle pin and pin signed 1).
Arduino library DpI2CEEPROM library. PLease use example Simple .
Arduino library i2ceeprom also available from URL http://arduino.cc/playground/Main/LibraryForI2CEEPROM
Please use example I2C_demo.pde