24AA256T-I/CS16K

Memory IC Overview

The Microchip Technology 24AA256T-I/CS16K is a 256-Kbit (32K x 8) serial electrically erasable programmable read-only memory (EEPROM). It operates on a single supply voltage ranging from 1.7V to 5.5V and supports I2C compatible two-wire serial communication with a maximum clock frequency of 400 kHz. The device features a 64-byte page write buffer, hardware write protection via the WP pin, and Schmitt trigger inputs for noise suppression. It is housed in an 8-ball CSP package and rated for industrial temperature operation between -40°C and +85°C.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using hardware address pins A0, A1, and A2.
• Includes a 64-byte page write buffer to optimize data transfer efficiency during write operations.
• Features hardware write protection that inhibits array writes when the WP pin is tied high.
• Provides output slope control to eliminate ground bounce and Schmitt trigger inputs for improved noise immunity.

Memory IC Applications

• Personal communications systems requiring non-volatile data storage
• Data acquisition applications needing low-power memory solutions
• Industrial control systems utilizing I2C bus architectures

Memory IC Procurement Notes

Verify the specific suffix CS16K corresponds to the 8-ball CSP package and tape-and-reel delivery format as defined in the manufacturer's ordering information. Confirm that the 'I' designation matches the required industrial temperature range of -40°C to +85°C for your application environment. Ensure compatibility with the 1.7V minimum operating voltage if powering from lower voltage rails.

Memory IC Selection Notes

Select this component when a 256-Kbit capacity is required within a compact CSP footprint. It is suitable for designs needing robust noise immunity through Schmitt triggers and ground bounce mitigation. Choose this part over variants with higher clock speeds if system timing constraints align with the 400 kHz limit at voltages above 2.5V.

Memory IC Part Context

This device belongs to the 24AA256 family of serial EEPROMs manufactured by Microchip Technology. The family shares identical electrical characteristics and functional descriptions but differs primarily in packaging options such as DFN, MSOP, PDIP, and SOIC. The T suffix indicates a tape-and-reel packaging configuration, while CS16K specifies the CSP package type.

Memory IC Replacement Considerations

Direct replacements include other packages within the same 24AA256 series such as 24AA256-I/MF or 24AA256-I/MS, provided the physical footprint change is acceptable. Cross-family substitutes like 24LC256 require verification of the 2.5V minimum voltage constraint.