The AT24C128SN2.7 is a 128-Kbit (16384 x 8) Serial EEPROM (Electrically Erasable Programmable Read-Only Memory) from Microchip Technology (formerly Atmel). This device features a 2-wire serial interface, compatible with the I2C protocol, and is designed for low-voltage operation, typically 2.7V. It provides non-volatile memory for storing configuration data, user settings, and other critical information that must be retained even when power is removed.

Applications

• Consumer Electronics: Used in TVs, DVD players, and set-top boxes for storing user preferences and system settings.
• Industrial Automation: Employed in programmable logic controllers (PLCs) and other industrial equipment for storing configuration parameters.
• Medical Devices: Utilized in medical equipment for storing calibration data and patient information.
• Security Systems: Used in alarm systems and access control systems for storing security codes and access logs.
• Automotive Electronics: Integrated into automotive control units for storing vehicle settings and diagnostic information.

Features

• 128-Kbit (16384 x 8) EEPROM: Provides 131,072 bits of non-volatile memory.
• 2-Wire Serial Interface: Uses the I2C (Inter-Integrated Circuit) protocol for communication.
• Low Voltage Operation (2.7V): Designed for operation at 2.7V, making it suitable for low-power applications.
• Write Protection: Features a hardware write protect pin to prevent accidental data corruption.
• High Endurance: Supports a high number of write cycles, typically 1 million cycles per byte.

Benefits

• Non-Volatile Memory: Retains data even when power is removed, ensuring data integrity.
• Easy Integration: The 2-wire serial interface simplifies the integration process into various systems.
• Low Power Consumption: Minimizes power usage, making it suitable for battery-powered and low-power applications.
• Data Protection: The write protect feature prevents accidental overwriting of critical data.
• Long-Term Reliability: High endurance ensures reliable performance over the lifespan of the device.

Additional Details

The AT24C128SN2.7 is available in a SOIC (Small Outline Integrated Circuit) package, making it suitable for surface mount assembly. The I2C interface supports standard (100 kHz) and fast (400 kHz) modes, providing flexibility in communication speed. The device also features a page write mode, allowing for efficient writing of multiple bytes in a single operation. The AT24C128SN2.7 is designed for use in a wide range of operating temperatures, typically from -40°C to +85°C, making it suitable for use in harsh environments. Its low voltage operation and compact size make it an ideal choice for applications where power and space are limited. The 'SN' in the part number indicates a surface mount package.