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AT27C256R-70PU: Features, Specs & More

2026-08-15 14:45:17Mr.Ming
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AT27C256R-70PU: Features, Specs & More

The AT27C256R-70PU is a 32K x 8-bit electrically programmable read-only memory (EPROM) chip. In this comprehensive article, we'll delve into the intricacies of the AT27C256R-70PU, uncovering its definition, key features, specifications, applications, and a closer look at its manufacturer.

 

Catalog

AT27C256R-70PU’s Overview

Key Features

Specifications

Applications

AT27C256R-70PU’s Manufacturer

Conclusion

 

 

AT27C256R-70PU’s Overview

The Microchip Technology AT27C256R-70PU is a high-performance 256K-bit EPROM memory device designed for reliable data storage in embedded electronic systems. This memory IC combines fast access speed, stable operation, and programmable storage capability, making it suitable for various industrial, consumer, and control applications. With its proven EPROM architecture, the AT27C256R-70PU remains a practical choice for engineers working with legacy systems and memory expansion designs.

 

Key Features

Let's delve into the standout features that make the AT27C256R-70PU a standout in the world of electronics:  

The AT27C256R-70PU offers several features that support dependable embedded system designs.

The AT27C256R-70PU provides 256K-bit storage capacity for embedded applications.

The device uses a 32K x 8-bit organization for simple memory access.

The memory chip supports a fast 70ns access time.

The component operates with a standard 5V power supply.

The device provides reliable data retention for long-term storage.

The EPROM structure allows repeated programming during product development.

The chip uses a 28-pin DIP package for convenient integration.

The device supports easy replacement in existing EPROM-based systems.

 

Specifications

Now, let's take a closer look at the technical specifications that define the capabilities of the AT27C256R-70PU:

Type

Parameter

Memory Type

Non-Volatile

Memory Format

EPROM

Technology

EPROM - OTP

Memory Size

256Kbit

Memory Organization

32K x 8

Memory Interface

Parallel

Access Time

70 ns

Voltage - Supply

4.5V ~ 5.5V

Operating Temperature

-40°C ~ 85°C (TC)

Mounting Type

Through Hole

Package / Case

28-DIP (0.600", 15.24mm)

Supplier Device Package

28-PDIP

Base Product Number

AT27C256

* AT27C256R-70PUs Datasheet

 

Applications

The AT27C256R-70PU is widely used in electronic systems that require stable firmware and program storage. Engineers often apply this EPROM memory in industrial controllers, embedded development platforms, testing equipment, communication devices, and legacy electronic products. It is also suitable for applications that require programmable memory during development cycles, including prototype systems and customized hardware designs.

 

AT27C256R-70PU’s Manufacturer

Microchip Technology, a global leader in the semiconductor industry, stands at the forefront of innovation, consistently pushing the boundaries of technology to create solutions that power the interconnected world. With a rich history dating back to 1989, Microchip has become synonymous with cutting-edge microcontroller and analog products. Renowned for its commitment to quality, reliability, and customer satisfaction, the company offers a comprehensive portfolio of integrated circuits and embedded solutions. Microchip's diverse range of products caters to a wide array of industries, including automotive, industrial, consumer electronics, and healthcare.

 

Conclusion

The Microchip Technology AT27C256R-70PU is a reliable EPROM memory device that provides stable storage, fast access performance, and flexible programming capability. Its 256K-bit capacity, 70ns access speed, and proven EPROM architecture make it a suitable solution for embedded systems, industrial equipment, and legacy electronics.


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