The AT93C86A is a 16-Kbit serial Electrically Erasable Programmable Read-Only Memory (EEPROM) manufactured by Atmel, now part of Microchip Technology. It uses a 3-wire serial interface for communication, offering a simple and efficient way to store non-volatile data. It's designed for a range of applications requiring persistent memory storage. While categorized as END-OF-LIFE, it was previously used for various embedded systems.

Applications

• Storing configuration data in electronic devices.
• Storing calibration parameters in sensors and instruments.
• Storing serial numbers or identification codes.
• Storing user preferences in consumer electronics.
• Data logging in industrial equipment.

Features

• 16-Kbit (2048 x 8 or 1024 x 16) EEPROM.
• 3-wire serial interface.
• Low-voltage operation.
• Self-timed write cycle.
• High reliability with 1,000,000 erase/write cycles.
• Data retention of 100 years.
• Write protect feature.

Benefits

• Non-volatile memory ensures data retention even when power is removed.
• Simple 3-wire interface simplifies integration with microcontrollers.
• Low-voltage operation makes it suitable for battery-powered devices.
• Self-timed write cycle reduces software overhead.
• High reliability ensures data integrity over the long term.
• Write protect feature prevents accidental data corruption.

Additional Details

The AT93C86A supports both x8 and x16 memory organizations, selectable via the ORG pin. The self-timed write cycle simplifies software control, as the microcontroller does not need to manage the timing of the write operation. As an end-of-life product, new designs should consider newer memory solutions. However, the AT93C86A may still be necessary for maintaining older systems or products that have not been redesigned. The device datasheet from Microchip provides detailed information regarding timing characteristics, electrical specifications, and package dimensions. It's important to refer to the datasheet for specific operating conditions and programming guidelines.