The AT28C256F-20TC is a 256K-bit (32K x 8) Electrically Erasable Programmable Read-Only Memory (EEPROM) manufactured by Atmel. It is designed for applications requiring non-volatile storage of data that can be electrically erased and reprogrammed in-system. The '-20TC' likely specifies the access time (200ns) and package type (TSSOP or similar small outline package).

Applications

• Data storage in embedded systems requiring frequent updates.
• Configuration storage in electronic devices.
• Parameter storage in industrial control systems.
• Calibration data storage.
• EEPROM for storing user preferences.

Features

• Electrically Erasable and Programmable: Allows for in-system reprogramming, which simplifies updates and modifications.
• Non-volatile storage: Retains data when power is removed, ensuring data integrity.
• Fast access time: 200ns access time facilitates quick data retrieval.
• Page write capability: Enables faster writing of multiple bytes of data.
• Low power consumption: Minimizes power requirements in embedded applications.

Benefits

• Simplified in-system updates without requiring physical removal of the device.
• Reliable storage of configuration data and parameters.
• Adaptability to changing system requirements through electrical reprogramming.
• Efficient data handling with page write capability.
• Extended battery life in portable applications due to low power consumption.

Additional Details

The AT28C256F-20TC operates on a single 5V power supply. The 'TC' suffix typically indicates a surface-mount package such as TSSOP (Thin Shrink Small Outline Package), SOIC (Small Outline Integrated Circuit) or similar, allowing for compact board designs. Data can be erased and programmed electrically, either byte-by-byte or in pages, according to specific timing and control signals detailed in the datasheet. As an 'END-OF-LIFE' component, it is no longer in active production by Atmel, and its availability relies on existing stock or surplus vendors. Proper programming procedures and adherence to the datasheet specifications are critical for reliable performance.