24AA512T-I/SN

Memory IC Overview

The Microchip Technology 24AA512T-I/SN 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 up to the 512K boundary and includes a 128-byte page write buffer. It is housed in an 8-lead SOIC package, rated for industrial temperatures between -40°C and +85°C.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using functional address lines A0, A1, and A2.
• Includes hardware write protection via the WP pin to inhibit array writes when tied to VCC.
• Features Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.

Memory IC Applications

• Personal communications systems
• Data acquisition applications
• Low-power embedded memory storage

Memory IC Procurement Notes

Verify that the ordering suffix 'SN' corresponds to the 8-lead SOIC package type as specified in the datasheet. Confirm the temperature grade 'I' matches the required industrial range of -40°C to +85°C. Ensure the component is RoHS compliant and check for any specific automotive qualification requirements if applicable to the design.

Memory IC Selection Notes

Select this part for designs requiring low-voltage operation down to 1.7V and standard I²C compatibility at 400 kHz. Consider alternative suffixes if TSSOP or PDIP packaging is preferred. Note that the 24LC512 variant requires a minimum 2.5V supply, whereas this 24AA512 model supports lower voltages.

Memory IC Part Context

This component belongs to the 24XX512 family of 512 Kbit Serial EEPROMs manufactured by Microchip Technology. The family includes variants such as the 24LC512 and 24FC512, which share similar architectures but differ in operating voltage ranges and maximum clock frequencies. The 24AA512 specifically targets low-voltage applications within the industrial temperature range.

Memory IC Replacement Considerations

The 24LC512T-I/SN serves as a direct physical replacement, though it requires a minimum supply voltage of 2.5V compared to the 1.7V minimum of the 24AA512T-I/SN. Verify voltage headroom before substitution.