24LC32A-E/SN

Memory IC Overview

The Microchip Technology 24LC32A-E/SN is a 32-Kbit Electrically Erasable PROM (EEPROM) organized as a single block of 4K x 8-bit memory. It features a two-wire serial interface compatible with I2C protocols, supporting clock frequencies up to 400 kHz for VCC between 2.5V and 5.5V. The device operates within an extended temperature range of -40°C to +125°C and utilizes an 8-lead SOIC package.

Memory IC Feature Summary

• Supports page write operations with a 32-byte buffer to enhance bus throughput efficiency.
• Includes hardware write protection via the WP pin to inhibit array modifications when tied high.
• Features Schmitt trigger inputs on SDA and SCL lines to suppress noise spikes and improve signal integrity.

Memory IC Applications

• Data acquisition systems requiring non-volatile storage
• Personal communications devices needing low-power memory
• Industrial control applications operating in extended temperature environments

Memory IC Procurement Notes

Verify that the ordering suffix correctly identifies the SN package type and E temperature grade. Confirm AEC-Q100 qualification status if automotive compliance is required. Ensure voltage supply constraints align with the specified 2.5V minimum operational threshold for this specific variant.

Memory IC Selection Notes

Select this component when extended industrial temperature performance is mandatory alongside standard I2C compatibility. Compare against the 24AA32A series if lower voltage operation down to 1.7V is necessary instead of the 2.5V minimum required here. Consider package availability and board space requirements relative to other 8-lead options.

Memory IC Part Context

This part belongs to the 24XX32A family of serial EEPROMs manufactured by Microchip Technology. The family shares common architectural features including the 32-Kbit capacity and I2C interface, while differentiating primarily through voltage ranges and temperature specifications across AA and LC sub-series variants.

Memory IC Replacement Considerations

24LC32A-I/SN

Memory IC FAQ

How does the WP pin function regarding data security?

Tying the WP pin to VCC inhibits all write operations to the array, protecting stored data from modification while leaving read operations unaffected.

What is the maximum clock frequency supported at 2.5V?

The device supports a maximum clock frequency of 400 kHz when the supply voltage is between 2.5V and 5.5V.