AT28C256-15PU 2-Piece EEPROM Microprocessor by TYSQXQ – 0.39in Size

Description

Product Overview

The AT28C256-15PU is a high‑performance EEPROM microprocessor designed for demanding industrial and scientific applications. Manufactured by TYSQXQ, this component offers 256 Kb of non‑volatile storage, packaged in a compact 0.39 in square form factor that measures just 0.39 x 0.39 x 0.39 inches and weighs 0.53 ounces. Its 28‑pin DIP configuration ensures easy insertion into standard sockets, while the robust silicon substrate provides reliable operation across a wide temperature range. The device is rated for a maximum operating voltage of 5 V and supports fast read/write cycles, making it suitable for data logging, firmware updates, and configuration storage in embedded systems.

Key specifications include a 256 Kb memory array organized as 32 K × 8 bits, a typical write time of 10 ms, and an endurance of 1 million write/erase cycles. The part is fully compatible with industry‑standard programming algorithms and can be programmed in‑system using common SPI or parallel interfaces. Its low power consumption, typically 0.5 mA in standby mode, helps extend battery life in portable devices.

Usage

Designed for versatility, the AT28C256-15PU excels in a variety of environments. In industrial automation, it stores configuration parameters for programmable logic controllers (PLCs) and motor drives, ensuring quick recovery after power loss. In scientific instrumentation, the memory retains calibration data for sensors and measurement devices, providing consistent accuracy over long deployments. Hobbyists and developers appreciate its ease of integration into prototype boards, development kits, and Arduino‑compatible platforms, where the 2‑piece pack offers a convenient spare for testing and replacement.

Because of its compact size, the component fits into space‑constrained enclosures such as handheld diagnostic tools, wearable health monitors, and IoT edge devices. Its reliable operation under temperature extremes—from –40 °C to +85 °C—makes it suitable for outdoor installations, automotive electronics, and aerospace subsystems where durability is critical.

Why Choose Us

When selecting a memory solution, quality and support are paramount. TYSQXQ’s AT28C256-15PU is manufactured under strict quality‑control standards, ensuring each unit meets or exceeds the specifications listed in the datasheet. The product is backed by a comprehensive warranty and a responsive technical support team that assists with integration, programming, and troubleshooting. Our distribution network guarantees fast delivery, and the 2‑piece packaging provides immediate redundancy for critical applications.

Beyond the hardware, we offer detailed documentation, reference designs, and software libraries to accelerate development. Our commitment to continuous improvement means you receive updates and compatibility information as new standards emerge, protecting your investment over the product’s lifecycle.

Key Features

• Compact 0.39 in square package saves board space and reduces weight.
• 256 Kb EEPROM provides ample non‑volatile storage for firmware and data.
• High endurance of 1 million write/erase cycles ensures long‑term reliability.
• Wide operating temperature range (‑40 °C to +85 °C) for harsh environments.
• Dedicated customer support and warranty for peace of mind.

FAQ

What is the maximum operating voltage for the AT28C256-15PU?

The device is rated for a maximum supply voltage of 5 V, making it compatible with most 5 V logic systems.

Can the memory be programmed in‑system?

Yes, the AT28C256-15PU supports in‑system programming via standard parallel or SPI interfaces, allowing updates without removing the component.

Is the 2‑piece pack suitable for bulk inventory?

Absolutely. The dual‑unit packaging provides a convenient spare for replacements, testing, or larger production runs, reducing the need for separate ordering.

What is the typical write time?

Write cycles typically complete within 10 ms, providing fast data storage while maintaining low power consumption.

Does the component include any built‑in protection?

The AT28C256-15PU features internal write‑protect circuitry that can be enabled to prevent accidental data modification, enhancing data integrity in critical applications.