24AA32AT-I/MC

Memory IC Overview

The Microchip Technology 24AA32AT-I/MC 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™, supporting clock frequencies up to 400 kHz for VCC ≥ 2.5V and 100 kHz for lower voltages. The device operates on a single supply ranging from 1.7V to 5.5V, with typical standby current of 1 µA and active current of 1 mA. It includes a 32-byte page write buffer, hardware write-protect capability, and functional address lines allowing up to eight devices on the same bus. The component is housed in an 8-lead DFN package and supports industrial temperature ranges.

Memory IC Feature Summary

• Low-voltage CMOS technology enabling operation down to 1.7V with minimal power consumption
• I2C-compatible two-wire serial interface with Schmitt trigger inputs for noise suppression
• Hardware write-protect pin to inhibit write operations while maintaining read access
• High reliability specifications including over one million erase/write cycles and data retention exceeding 200 years

Memory IC Applications

• Personal communications devices requiring low-power non-volatile storage
• Data acquisition systems needing reliable parameter retention
• Embedded controllers utilizing I2C bus architecture for configuration data

Memory IC Procurement Notes

Verify that the ordering suffix 'MC' corresponds specifically to the 8-lead DFN package type and tape-and-reel packaging format. Confirm the 'I' designation indicates the Industrial temperature range (-40°C to +85°C). Ensure compatibility with the required voltage levels, noting that maximum clock frequency varies based on the specific supply voltage applied during operation.

Memory IC Selection Notes

Select this component when a compact surface-mount solution is required for I2C-based memory applications. The 24AA32AT variant is suitable for designs prioritizing automated assembly through reel packaging. Consider the 1.7V minimum operating voltage for battery-powered or low-voltage logic systems. Verify that the 32-byte page write buffer aligns with the application's data throughput requirements and bus timing constraints.

Memory IC Part Context

This part belongs to the 24XX32A family of 32-Kbit serial EEPROMs manufactured by Microchip Technology. The family shares identical electrical characteristics and functional descriptions, differing primarily in voltage ranges and package options. The 24AA32A series is distinguished by its ability to operate at voltages as low as 1.7V, whereas the 24LC32A series requires a minimum of 2.5V. Both series support the same I2C protocol and memory organization.

Memory IC Replacement Considerations

24AA32AT-I/MS

Memory IC FAQ

How does the WP pin function regarding write protection?

Tying the WP pin to VSS enables write operations, while tying it to VCC inhibits all write cycles. Read operations remain unaffected regardless of the WP pin state.

What is the behavior if a page write crosses a physical page boundary?

If a page write command attempts to cross a physical page boundary, the data wraps around to the beginning of the current page, overwriting previously stored data instead of proceeding to the next page.