AT24C256N-10SU-1.8

Memory IC Overview

The AT24C256N-10SU-1.8 is a 256Kbit (32,768 x 8) serial electrically erasable and programmable read-only memory (EEPROM). It features a two-wire I²C-compatible serial interface with clock frequencies up to 1 MHz at 5V, 400 kHz at 2.7V, and 100 kHz at 1.8V. The device operates on a supply voltage range of 1.8V to 3.6V. It includes hardware write protection via the WP pin, supports 64-byte page writes, and offers high reliability with one million write cycle endurance and 40-year data retention.

Memory IC Feature Summary

• Supports bidirectional data transfer over a two-wire serial bus with Schmitt trigger inputs for noise suppression.
• Provides hardware data protection through a dedicated Write Protect pin that inhibits all write operations when asserted high.
• Enables efficient data storage using a 64-byte page write mode that allows partial page writes and internal address rollover.
• Features low power standby mode activated upon power-up or after receipt of a stop condition.

Memory IC Applications

• Industrial applications requiring low power and low voltage operation
• Commercial applications needing non-volatile configuration data storage
• Systems storing calibration values or parameters that must persist after power loss

Memory IC Procurement Notes

Verify package type and voltage suffix carefully as the AT24C256 family includes multiple variants. Confirm RoHS compliance status if required by your manufacturing process. Check for lead-free/halogen-free designation in ordering information. Ensure compatibility with existing I²C bus timing constraints before procurement.

Memory IC Selection Notes

Select this component for designs requiring 256Kbit capacity with I²C interface. Consider the 1.8V operating range for low voltage systems. Evaluate page write capabilities for throughput requirements. Verify temperature range suitability for your specific application environment.

Memory IC Part Context

This part belongs to the AT24C128/256 family of serial EEPROMs manufactured by Atmel, now Microchip Technology. The datasheet notes it is not recommended for new design; users should refer to the AT24C256B datasheet for updated specifications. The 'N' suffix indicates a lead-free/halogen-free package compliant with RoHS directives.

Memory IC Replacement Considerations

The datasheet explicitly states this device is not recommended for new design and directs users to the AT24C256B datasheet. No direct substitute part numbers are provided in the source material.