24LC32A-I/SM

Memory IC Overview

The Microchip Technology 24LC32A-I/SM 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 industrial temperature range of -40°C to +85°C and utilizes an 8-lead SOIJ surface-mount 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 eliminate ground bounce.

Memory IC Applications

• Personal communications devices requiring low-power non-volatile storage.
• Data acquisition systems needing reliable parameter retention.
• Embedded controllers managing configuration data across multiple bus addresses.

Memory IC Procurement Notes

Verify the specific suffix 'I/SM' corresponds to the Industrial temperature grade (-40°C to +85°C) and the 8-lead SOIJ package format. Confirm that the voltage supply requirements align with the 2.5V minimum threshold specified for the 24LC32A series, distinct from the 1.7V capability of the 24AA32A variant.

Memory IC Selection Notes

Select this component when a 32-Kbit capacity is required with I2C compatibility in a compact SOIJ footprint. Ensure the system design accommodates the 2.5V to 5.5V operating voltage range. Consider the 32-byte page write buffer size for optimizing write cycle timing and bus utilization in the application architecture.

Memory IC Part Context

This part belongs to the 24XX32A family of 32-Kbit I2C Serial EEPROMs manufactured by Microchip Technology. The family includes variants like the 24AA32A, which supports lower voltages down to 1.7V. The 24LC32A specifically targets applications requiring operation starting at 2.5V, offering robust performance in standard logic environments.

Memory IC Replacement Considerations

Direct substitutes include other packages within the same electrical specification, such as 24LC32AT-I/MS (8-MSOP). Verify package dimensions and pinout compatibility before substitution.

Memory IC FAQ

How does the WP pin function?

Tying the WP pin to VSS enables write operations, while tying it to VCC inhibits all write cycles, protecting the entire array from modification while allowing read access.

What is the maximum clock frequency?

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