24AA024T-I/ST

Memory IC Overview

The Microchip Technology 24AA024T-I/ST is a 2 Kbit (256 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 features a 2-wire I²C compatible serial interface with clock frequencies up to 400 kHz. The device includes hardware write protection via the WP pin, supports page writes of up to 16 bytes, and offers data retention exceeding 200 years with over one million erase/write cycles.

Memory IC Feature Summary

• Hardware write-protect capability enabled by the WP pin
• I²C compatible 2-wire serial interface supporting 100 kHz and 400 kHz modes
• Low-power CMOS technology with standby current as low as 1 μA
• Schmitt trigger inputs for noise suppression and output slope control

Memory IC Applications

• Data logging in industrial environments
• Configuration storage for embedded systems
• Parameter storage in consumer electronics
• Asset tracking and identification systems

Memory IC Procurement Notes

Verify that the ordering suffix 'T' corresponds to tape-and-reel packaging and '/ST' indicates the TSSOP package. Confirm the 'I' suffix denotes the industrial temperature range (-40°C to +85°C). Ensure the specific part number matches the required voltage range and write-protect functionality, as variants without hardware protection exist within the same family.

Memory IC Selection Notes

Select this component when hardware write protection is required alongside low-voltage operation down to 1.7V. The 24AA024 series differs from the 24LC024 series primarily in its wider voltage range and inclusion of the hardware write-protect pin. Verify that the application requires the specific 256-byte organization and I²C addressing scheme provided by this device.

Memory IC Part Context

This device belongs to the 24AA024/24LC024 family of 2 Kbit serial EEPROMs. It shares functional similarities with the 24AA025 and 24LC025 but is distinguished by its 256-byte memory organization and the presence of a dedicated hardware write-protect pin. The 'T' suffix typically indicates reel packaging, while 'ST' specifies the thin-shrink small-outline package.

Memory IC Replacement Considerations

The 24LC024T-I/ST serves as a direct physical replacement if hardware write protection is not utilized and the system voltage remains above 2.5V. Other 24AA024 variants with different packages or temperature grades may also be suitable substitutes depending on mechanical constraints.