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The AT24C04N is a serial EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Atmel (now part of Microchip Technology). Below are its key specifications, descriptions, and features:

Specifications:

• Memory Size: 4 Kbit (512 x 8 bits)
• Interface: I²C (Two-Wire Serial Interface)
• Operating Voltage: 1.8V to 5.5V
• Clock Frequency: Up to 400 kHz (I²C Fast Mode)
• Write Cycle Time: 5 ms (max)
• Endurance: 1,000,000 Write Cycles
• Data Retention: 100 Years
• Package Options: 8-Pin PDIP, SOIC, TSSOP

Descriptions:

• The AT24C04N is a non-volatile memory device that retains data even when power is removed.
• It supports byte and page write operations (up to 16 bytes per page).
• Features hardware write protection (via WP pin) to prevent accidental writes.
• Compatible with standard I²C protocols and widely used in embedded systems for configuration storage.

Features:

• Low Power Consumption:
• Active Read Current: 1 mA (typical)
• Standby Current: 5 µA (typical)
• Built-in Error Detection:
• Supports Acknowledge Polling for write completion.
• Page Write Buffer:
• Allows faster sequential writes (up to 16 bytes).
• Industrial Temperature Range:
• Operates from -40°C to +85°C.
• Pin-Compatible:
• Works with other AT24Cxx series EEPROMs (e.g., AT24C02N, AT24C08N).

This EEPROM is commonly used in applications like smart meters, automotive systems, IoT devices, and consumer electronics for storing calibration data, serial numbers, or system parameters.

*(Note: For detailed electrical characteristics, refer to the official Atmel/Microchip datasheet.)*