Description
The AT28C64B is a high-performance electrically-erasable and programmable read only memory (EEPROM). Its 64K of memory is organized as 8,192 words by 8 bits. Manufactured with Atmel’s advanced nonvolatile CMOS technology, the device offers

FEATUREs
• Fast Read Access Time – 150 ns
• Automatic Page Write Operation
    – Internal Address and Data Latches for 64 Bytes
• Fast Write Cycle Times
    – Page Write Cycle Time: 10 ms Maximum (Standard) 2 ms Maximum (Option)
    – 1 to 64-byte Page Write Operation
• Low Power Dissipation
    – 40 mA Active Current
    –100 µA CMOS Standby Current
• Hardware and Software Data Protection
• DATAPolling and Toggle Bit for End of Write Detection
• High Reliability CMOS Technology
    – Endurance: 100,000 Cycles
    – Data Retention: 10 Years
• Single 5 V ±10% Supply
• CMOS and TTL Compatible Inputs and Outputs
• JEDEC Approved Byte-wide Pinout
• Commercial and Industrial Temperature Ranges