24AA512T-I/ST

Memory IC Overview

The Microchip Technology 24AA512T-I/ST is a 512 Kbit (64K x 8) serial electrically erasable PROM featuring an I²C compatible two-wire interface. It operates on a single supply voltage ranging from 1.7V to 5.5V with a maximum clock frequency of 400 kHz. The device supports random and sequential reads, page writes up to 128 bytes, and hardware write protection via the WP pin. It is housed in an 8-lead TSSOP package and functions within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using functional address lines A0, A1, and A2 for expanded addressing.
• Includes Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.
• Features a 128-byte page write buffer that allows efficient data transfer during write operations.
• Provides hardware write protection by tying the WP pin to VCC to inhibit write cycles while maintaining read access.

Memory IC Applications

• Personal communications systems requiring low-power non-volatile storage
• Data acquisition applications needing reliable parameter retention
• Industrial control systems operating within standard temperature ranges

Memory IC Procurement Notes

Verify the specific suffix 'I/ST' corresponds to the Industrial temperature grade (-40°C to +85°C) and TSSOP-8 package configuration. Confirm the datasheet revision matches the required electrical characteristics, particularly the 400 kHz clock limit at voltages below 2.5V. Ensure the component meets RoHS compliance standards as specified in the manufacturer documentation.

Memory IC Selection Notes

Select this part when a 512 Kbit capacity is required with a standard I²C interface. It is suitable for designs needing operation down to 1.7V, unlike the 24LC512 variant which requires a minimum of 2.5V. Consider the TSSOP package dimensions if surface mount space is constrained. Verify that the 400 kHz speed is sufficient for the system bus requirements.

Memory IC Part Context

This component belongs to the 24XX512 family of serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 24LC512 and 24FC512 but differs in voltage range and clock speed capabilities. The 'T' suffix indicates tape and reel packaging, while 'I' denotes the industrial temperature rating.

Memory IC Replacement Considerations

The 24LC512T-I/ST serves as a direct physical replacement but requires a minimum supply voltage of 2.5V instead of 1.7V. The 24FC512T-I/ST offers higher clock speeds up to 1 MHz but also has specific voltage-dependent frequency limitations.