The AT28C64B-20JI is a 64K EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Atmel. Organized as 8K x 8 bits, it provides non-volatile storage for data and code, allowing for in-system electrical erasure and reprogramming. This makes it suitable for applications where data needs to be updated or modified frequently. It features a fast access time, contributing to efficient system operation.

Applications

• Embedded Systems: Storing configuration parameters and calibration data in microcontrollers and embedded systems.
• Industrial Control Systems: Maintaining settings and data in programmable logic controllers (PLCs) and industrial equipment.
• Data Logging: Recording sensor data and system events in data logging applications.
• Robotics: Storing robot control programs and calibration data.
• Instrumentation: Used in measurement and testing equipment to store calibration curves and settings.

Features

• 64K EEPROM: 65,536 bits of electrically erasable programmable read-only memory.
• Fast Access Time: 200 ns access time for quick data retrieval.
• In-System Programmability: Allows for electrical erasure and reprogramming without removing the device from the circuit.
• Low Power Consumption: Minimizes power requirements for energy-efficient operation.
• Page Write Mode: Enables faster write operations by writing multiple bytes at once.
• JEDEC Standard Pinout: Facilitates easy integration into existing systems.

Benefits

• Flexible Data Storage: EEPROM technology allows for easy data updates and modifications.
• Improved System Performance: Fast access times enhance the speed and responsiveness of embedded systems.
• Simplified Firmware Updates: In-system programmability allows for remote or on-site firmware upgrades.
• Energy Efficient: Low power consumption extends battery life in portable applications.
• Cost-Effective Solution: Provides a reliable and affordable non-volatile storage option.
• Easy Integration: JEDEC standard pinout simplifies the process of incorporating the device into existing designs.

Additional Details

The AT28C64B-20JI utilizes advanced CMOS technology for high performance and low power consumption. It is typically packaged in a PDIP (Plastic Dual In-line Package) for easy insertion into through-hole circuit boards. The device features TTL compatible inputs and outputs for seamless interfacing with other digital components. Due to its 'END-OF-LIFE' status, it is crucial to consider availability and potential replacements for new designs. It also supports features like data polling and toggle bit polling to indicate the completion of write operations. Write protect features are typically included to prevent accidental data corruption.