24AA256T-I/MS

Memory IC Overview

The Microchip Technology 24AA256T-I/MS is a 256-Kbit (32K x 8) serial EEPROM featuring an I²C-compatible two-wire interface. It operates on a single supply voltage ranging from 1.7V to 5.5V and supports clock frequencies up to 400 kHz. The device utilizes an 8-lead MSOP surface-mount package and functions within an industrial temperature range of -40°C to +85°C. Key electrical characteristics include a maximum write current of 3 mA, standby current of 1 µA, and data retention exceeding 200 years with one million erase/write cycles.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using hardware address inputs for expanded addressing.
• Includes Schmitt trigger inputs and output slope control to suppress noise and eliminate ground bounce.
• Features a 64-byte page write buffer for efficient sequential data storage operations.
• Provides hardware write protection via the WP pin to secure memory arrays against unauthorized modifications.

Memory IC Applications

• Personal communications equipment requiring low-power non-volatile storage
• Data acquisition systems needing reliable parameter retention
• Industrial controllers utilizing I²C bus architectures

Memory IC Procurement Notes

Verify that the ordering suffix matches the required package type and temperature grade. Confirm the specific voltage range compatibility for the target application environment. Ensure the I²C bus pull-up resistor values align with the specified clock frequency requirements. Check for any recent product change notifications regarding packaging or material composition updates.

Memory IC Selection Notes

Select this component when a 256-Kbit capacity is required with a standard I²C interface. The MSOP package is suitable for space-constrained surface-mount designs. Consider the 1.7V minimum operating voltage for battery-powered applications. Verify that the 400 kHz maximum clock speed meets the system's communication timing constraints.

Memory IC Part Context

This part belongs to the 24AA256 series of serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24LC256 and 24FC256 models but differs in voltage ranges and clock speeds. The series is designed for advanced low-power applications and offers various package options including DFN, SOIC, and TSSOP.

Memory IC Replacement Considerations

Direct substitutes include other 24AA256 variants with different packages such as 24AA256T-I/MF or 24AA256T-I/ST. Cross-family replacements like 24LC256 require verification of the 2.5V minimum voltage constraint. Ensure any alternative maintains the 400 kHz I²C compatibility and MSOP footprint if physical replacement is necessary.