View 24c1024 datasheet:

Features � Low-voltage Operation � 2.7 (VCC = 2.7V to 5.5V) � Internally Organized 131,072 x 8 � 2-wire Serial Interface � Schmitt Triggers, Filtered Inputs for Noise Suppression � Bi-directional Data Transfer Protocol � 400 kHz (2.7V) and 1 MHz (5V) Clock Rate � Write Protect Pin for Hardware and Software Data Protection � 256-byte Page Write Mode (Partial Page Writes Allowed) � Random and Sequential Read Modes 2-wire Serial � Self-timed Write Cycle (5 ms Typical) � High Reliability EEPROM � Endurance: 100,000 Write Cycles/Page � Data Retention: 40 Years 1M (131,072 x 8) � 8-lead PDIP, 8-lead EIAJ SOIC, 8-lead LAP and 8-ball dBGATM Packages Description AT24C1024 The AT24C1024 provides 1,048,576 bits of serial electrically erasable and program- mable read only memory