Description
The AT28HC64B 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 access times to 55 ns with power dissipation of just 220 mW. When the device is deselected, the CMOS standby current is less than 100µA.

Features
• Fast Read Access Time - 55 ns
• Automatic Page Write Operation
       Internal Address and Data Latches for 64-Bytes
• Fast Write Cycle Times
     Page Write Cycle Time: 10 ms Maximum
     1 to 64-Byte Page Write Operation
• Low Power Dissipation
    40 mA Active Current
    100µA CMOS Standby Current
• Hardware and Software Data Protection
• DATA Polling and Toggle Bit for End of Write Detection
• High Reliability CMOS Technology
     Endurance: 100,000 Cycles
    Data Retention: 10 Years
• Single 5V ±10% Supply
• CMOS and TTL Compatible Inputs and Outputs
• JEDEC Approved Byte-Wide Pinout
• Commercial and Industrial Temperature Ranges