Microchip Technology 24AA512-I/MS RoHS: yes Memory Size: 512 Kbit Organization: 64 K x 8 Data Retention: 200 yr Maximum Clock Frequency: 400 kHz Maximum Operating Current: 400 uA Operating Supply Voltage: 1.8 V Maximum Operating Temperature: + 85 C Interface Type: I2C Minimum Operating Temperature: - 40 C Operating Current: 400 uA Supply Voltage - Max: 5.5 V Supply Voltage - Min: 1.7 V