The AT28C64B-20PC is a 64K (8K x 8) parallel EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Atmel. This device features fast access times, low power consumption, and high endurance, making it suitable for a wide range of applications where non-volatile memory is required. It offers byte-alterable capability, allowing individual bytes to be written or erased without affecting other memory locations. The 20 in the part number indicates a 200ns access time.

Applications

• Embedded systems for storing configuration data
• Data logging applications
• Industrial control systems
• Programmable logic controllers (PLCs)
• Consumer electronics requiring non-volatile storage

Features

• Fast Access Time: 200 ns
• Low Power Consumption: Active and Standby modes
• Byte-Alterable EEPROM
• Self-Timed Write Cycle
• Automatic Page Write Operation
• JEDEC Standard Pinout
• TTL Compatible I/O
• High Endurance: 100,000 Write Cycles
• Data Retention: 10 Years

Benefits

• Reliable non-volatile data storage, ensuring data is retained even when power is removed.
• Fast access times enable quick data retrieval, improving system performance.
• Low power consumption makes it suitable for battery-powered applications.
• Byte-alterable capability allows for flexible data management and efficient memory utilization.
• High endurance ensures long-term reliability and durability.

Technical Specifications

The AT28C64B-20PC operates on a single 5V power supply. It has a typical standby current of a few microamperes and an active current of tens of milliamperes. The device is available in a standard DIP (Dual In-line Package), simplifying integration into existing systems. The memory array is organized as 8192 x 8 bits. The write cycle is self-timed, eliminating the need for external timing components.