The AT28C256-20TC is a high-performance 256K (32K x 8) Parallel EEPROM from Microchip Technology, designed to deliver reliability and endurance in a wide range of applications. This device offers a fast access time of 200 ns, making it an excellent choice for performance-intensive tasks that require quick data retrieval.

With its CMOS EEPROM technology, the AT28C256-20TC provides a durable and low-power solution for data storage. It is well-suited for memory applications where long-term data retention and multiple write cycles are essential. The EEPROM is organized as 32,768 words by 8 bits, which allows for a substantial amount of data to be stored and accessed efficiently.

The device supports a two-wire serial interface and is compatible with the industry-standard JEDEC byte-wide pinout, which simplifies integration into existing designs. This EEPROM also features a 5V ±10% supply voltage, making it versatile for use in a variety of system voltages. The AT28C256-20TC operates within an industrial temperature range of -40°C to +85°C, ensuring stable performance under extreme conditions.

One of the key advantages of the AT28C256-20TC is its hardware data protection feature. The device includes a hardware and software data protection scheme to prevent inadvertent writes, thereby safeguarding the stored data. Additionally, the EEPROM has an endurance of at least 100,000 write cycles, with a data retention of 10 years, demonstrating its reliability and longevity.

The AT28C256-20TC is offered in a 28-pin, 0.300" wide, plastic Thin Small Outline Package (TSOP) and is also available in PDIP and PLCC packages. Its versatility and robustness make it an ideal memory component for microcontroller-based systems, industrial controllers, automotive applications, and any other system that requires a dependable non-volatile memory solution.

In summary, the AT28C256-20TC from Microchip Technology is a highly reliable and efficient EEPROM, perfect for applications requiring fast access times, high data integrity, and low power consumption.