The AT24C64 provides 65,536 bits of serial electrically erasable and program mableread only memory (EEPROM) organized as 8192 words of 8 bits each. The device's cascadable feature allows up to 8 devices to share a common 2-wire bus. The device is optimized for use in many industrial and commercial applications where low power and low voltage operation are essential. The AT24C64 is available in space saving 8-pin JEDEC PDIP, 8-pin JEDEC SOIC, 8-pin EIAJ SOIC,and 8-pin TSSOP (AT24C64) packages and is accessed via a 2-wire serial interface.In addition, the entire family is available in 2.7V (2.7V to 5.5V) and 1.8V (1.8V to 5.5V)versions.

? Low-Voltage and Standard-Voltage Operation
- 2.7 (VCC = 2.7V to 5.5V)
- 1.8 (VCC = 1.8V to 5.5V)
? Low-Power Devices (ISB = 2 μA at 5.5V) Available
? Internally Organized 4096 x 8, 8192 x 8
? 2-Wire Serial Interface
? Schmitt Trigger, Filtered Inputs for Noise Suppression
? Bidirectional Data Transfer Protocol
? 100 kHz (1.8V, 2.5V, 2.7V) and 400 kHz (5V) Clock Rate
? Write Protect Pin for Hardware Data Protection
? 32-Byte Page Write Mode (Partial Page Writes Allowed)
? Self-Timed Write Cycle (10 ms max)
? High Reliability
- Endurance: 1 Million Write Cycles
- Data Retention: 100 Years
? Automotive Grade and Extended Temperature Devices Available
? 8-Pin JEDEC PDIP, 8-Pin JEDEC SOIC, 8-Pin EIAJ SOIC,and 8-pin TSSOP Packages