24AA08-I/ST

Memory IC Overview

The Microchip Technology 24AA08-I/ST is an 8-Kbit Electrically Erasable PROM (EEPROM) organized as four blocks of 256 x 8-bit memory. It operates on a single supply ranging from 1.7V to 5.5V with a maximum clock frequency of 400 kHz. The device features low-power CMOS technology, drawing a maximum read current of 1 mA and standby current of 1 µA. It includes a 16-byte page write buffer, hardware write-protect capability via the WP pin, and Schmitt trigger inputs for noise suppression. The component supports industrial temperature ranges from -40°C to +85°C and is housed in an 8-Lead SOIC package.

Memory IC Feature Summary

• Supports bidirectional two-wire serial interface compatible with I2C protocols
• Includes hardware write-protect functionality controlled by the WP pin
• Features Schmitt trigger inputs and output slope control for enhanced noise immunity
• Provides self-timed erase/write cycles with automatic acknowledgment polling

Memory IC Applications

• Data logging systems requiring non-volatile storage
• Configuration parameter storage in embedded controllers
• Calibration data retention in sensor interfaces
• Device identification and serial number storage

Memory IC Procurement Notes

Verify that the ordering suffix matches the required package type, specifically ST for the 8-Lead SOIC variant. Confirm the temperature grade corresponds to Industrial specifications (-40°C to +85°C). Ensure the voltage supply requirements align with the 1.7V to 5.5V operational range defined in the datasheet. Check for any specific RoHS compliance markings if environmental regulations apply to the final assembly.

Memory IC Selection Notes

Select this component when an 8-Kbit capacity is sufficient for the application's data storage needs. The 24AA08 series is suitable for designs requiring operation down to 1.7V, unlike the 24LC08B which requires a minimum of 2.5V. Consider the 8-Lead SOIC package for surface mount assembly compatibility. Evaluate the need for hardware write protection if security against accidental overwrites is critical for the system design.

Memory IC Part Context

This part belongs to the 24XX08 family of I2C Serial EEPROMs manufactured by Microchip Technology. The family includes variants such as the 24LC08B and 24FC08, which differ primarily in operating voltage and maximum clock speed capabilities. The 24AA08 specifically targets applications needing lower voltage operation compared to the standard 2.5V minimum of other family members while maintaining standard I2C communication speeds.

Memory IC Replacement Considerations

Direct functional substitutes within the same package include the 24AA08T-I/MS (MSOP package) or 24AA08-I/P (PDIP package) if form factor changes are acceptable. Cross-family replacements like the 24LC08B require verification of the minimum supply voltage constraint, as it does not support operation below 2.5V.