The AT27C020 is a 2-Megabit One-Time Programmable Read-Only Memory (OTP EPROM) from Atmel. It is organized as 256K x 8 bits and is designed for applications requiring non-volatile storage of data and program code. This EPROM provides a cost-effective solution for permanent storage in embedded systems, and its OTP nature ensures data integrity once programmed. Because it is an END-OF-LIFE product, it is typically found in legacy systems and may be difficult to source.

Applications:

• Embedded systems firmware storage
• Microcontroller program memory
• Data logging applications
• Legacy electronic devices
• Industrial control systems

Features:

• 2-Megabit (256K x 8) OTP EPROM
• Fast access time
• Low power consumption
• Single 5V power supply
• TTL compatible inputs and outputs

Benefits:

• Permanent data storage
• Reliable operation in harsh environments
• Easy integration with microcontrollers
• Cost-effective solution for non-volatile memory
• Simple programming requirements

Additional Details:

The AT27C020 is available in various package options, including PDIP and PLCC. Its key electrical characteristics include supply voltage (VCC), output current (IO), and access time (tACC). Programming is achieved by applying specific voltages and timing sequences to the programming pins. Due to its END-OF-LIFE status, consider alternative memory solutions for new designs. Detailed specifications are available in the Atmel datasheet.