Microchip Technology AT28C256E-15TU EEPROM

The AT28C256E-15TU is a high-performance 256K (32K x 8) Parallel EEPROM manufactured by Microchip Technology. This electrically erasable programmable read-only memory is designed to provide a flexible, non-volatile storage solution for applications that require data retention across power cycles. It is ideal for a wide range of uses, from industrial control systems to consumer electronics.

The device offers a fast access time of 150 ns, which enables high-speed data retrieval, making it suitable for performance-critical applications. The EEPROM is organized as 32,768 words of 8 bits each, providing a total storage capacity of 256 kilobits. It operates across a standard voltage range of 5V, which is typical for many digital circuits, ensuring compatibility with a broad range of existing designs.

One of the key features of the AT28C256E-15TU is its simple and efficient parallel interface, which allows for easy integration into a variety of microprocessor-based systems. The device supports both byte write and page write modes, enabling flexible programming capabilities. Byte write operations can be completed in as little as 10 ms, and the device supports a page write capability of up to 64 bytes at once, which can significantly improve programming throughput for larger data buffers.

The AT28C256E-15TU is known for its high reliability, with an endurance of 100,000 write cycles and a data retention of 10 years. This makes it a robust storage choice for applications where data integrity over time is critical. Additionally, the device features software data protection, ensuring that the contents of the memory are safeguarded against inadvertent writes during power transitions.

This EEPROM is provided in a 28-lead, thin small outline package (TSOP), which is conducive to space-constrained applications. The AT28C256E-15TU is also characterized for operation from -40°C to +85°C, making it suitable for use in environments with extreme temperatures.

In summary, the AT28C256E-15TU from Microchip Technology is a highly reliable and fast EEPROM, perfect for applications requiring frequent data updates and long-term data storage without the need for a battery backup.