Microchip 2 MB OTP EPROM Memory 32-Pin PDIP, Parallel Interface, 4.5V to 5.5V, 55ns Access Time AT27C020-55PU

Microchip AT27C020-55PU is a high-quality 2 MB One Time Programmable EPROM memory chip featuring a 32-pin PDIP through-hole package and a parallel interface. Designed specifically for applications requiring permanent, non-volatile digital storage, this device offers reliable performance with a maximum random access time of 55ns, allowing rapid access to stored data.

Operating within a supply voltage range of 4.5V to 5.5V and a supply current of 100μA, the chip is well suited to a wide variety of electronic and embedded systems. The device is organized as 256k words by 8 bits, making it ideal for moderate memory demands.

The AT27C020-55PU operates across a broad temperature range from -40°C to +85°C, providing durability and stability in industrial and commercial environments. Its OTP (One Time Programmable) technology means that once programmed, the data is permanently stored and cannot be erased, making it ideal for firmware storage and other applications where data integrity is critical.

The chip lacks a quartz window which is typical in UV-erasable EPROMs, thus it cannot be erased or reprogrammed. This design restriction ensures permanent firmware or data retention without risk of accidental erasure.

Its 32-pin PDIP package measures 42.2 mm in length, 13.9 mm in width, and 4.8 mm in height, making it compatible with many through-hole PCB assembly methods. This package type facilitates easy handling and insertion onto printed circuit boards.

Applications for the AT27C020-55PU include industrial controls, embedded systems, and other uses requiring stable, non-volatile storage with a permanent programming feature. The parallel interface offers straightforward integration into existing designs.

This OTP EPROM offers a memory size of 2MB organized as 256k x 8 bits. It features a maximum random access time of 55ns for fast read operations. The device operates over a voltage range of 4.5V to 5.5V with a supply current of approximately 100μA.

It supports through-hole mounting with a 32-pin PDIP package measuring 42.2mm in length and 13.9mm in width. Operating temperature ranges from -40°C to +85°C suitable for industrial environments. This OTP memory cannot be erased and reprogrammed due to its non-windowed package design.

The device is not compatible with in-system programming. Suitable for electronic, industrial, and embedded system applications where permanent memory is required. Provides reliable data storage without the risk of accidental erasure.

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