Overview

The AT24C02A is a 2-kilobit Electrically Erasable Programmable Read-Only Memory (EEPROM) from Atmel (now Microchip Technology). It's organized as 256 x 8 bits and utilizes a two-wire serial interface (I2C) for communication. It provides non-volatile data storage for a wide variety of applications. The AT24C02A is a cost-effective and reliable solution for storing small amounts of data in embedded systems.

Applications

• Storing configuration settings in embedded systems.
• Storing calibration data in sensors and measurement devices.
• Storing serial numbers or identification codes.
• Storing user preferences in consumer electronics.
• Storing system parameters in industrial equipment.

Features

• 2-kilobit (256 x 8) memory array.
• Two-wire serial interface (I2C).
• Low-voltage operation (typically 1.8V to 5.5V).
• Self-timed write cycle.
• Write protect feature.
• Low power consumption.
• Small package options.
• Page Write Mode.
• 1 MHz clock frequency.

Benefits

• Non-volatile storage retains data without power.
• I2C interface simplifies communication with microcontrollers.
• Low-voltage operation reduces power consumption.
• Write protect feature prevents accidental data corruption.
• Small package size saves board space.
• Cost-effective solution for small data storage.

Additional Details

The AT24C02A communicates via the I2C protocol, employing a two-wire interface (SDA and SCL). The I2C address is configurable, allowing multiple AT24C02A devices to share the same I2C bus. The self-timed write cycle simplifies the programming process by automatically handling the timing requirements. The write protect feature safeguards the entire memory array from unintentional write operations. Various package options are available to suit diverse board layouts. The 1 MHz clock frequency dictates the maximum speed of the I2C communication. Data retention is guaranteed for an extended period, usually lasting 10 years or more. Additional details regarding timing specifications, voltage ranges, and package dimensions can be found in the device datasheet.