24LC32AFT-I/SN

Memory IC Overview

The Microchip Technology 24LC32AFT-I/SN is a 32 Kbit Electrically Erasable PROM organized as a single block of 4K x 8-bit memory. It features a 2-wire serial interface compatible with I2C™, supporting clock frequencies up to 400 kHz for VCC ≥ 2.5V. The device operates on a single supply voltage ranging from 2.5V to 5.5V and includes hardware write-protect capabilities for the upper quarter of the array. It utilizes low-power CMOS technology with standby currents as low as 1 μA.

Memory IC Feature Summary

• Supports bidirectional data transmission via a 2-wire serial bus protocol
• Includes a 32-byte page write buffer for efficient data storage operations
• Provides hardware write protection for the upper quarter of the memory array
• Features Schmitt trigger inputs to suppress noise spikes

Memory IC Applications

• Personal communications devices requiring non-volatile data storage
• Data acquisition systems needing parameter retention
• Industrial control applications utilizing I2C communication
• Embedded systems requiring hardware write protection

Memory IC Procurement Notes

Verify that the ordering suffix correctly identifies the TSSOP package and Industrial temperature grade. Confirm the specific variant matches the required voltage range, as the 'LC' series specifies a minimum operating voltage of 2.5V. Ensure compatibility with the target system's I2C bus timing requirements before finalizing procurement.

Memory IC Selection Notes

Select this component when a 32 Kbit EEPROM with I2C interface is required in a surface-mount TSSOP package. The Industrial temperature rating (-40°C to +85°C) suits general commercial and industrial environments. Consider the 2.5V minimum supply voltage constraint compared to lower-voltage alternatives if operating near 1.7V.

Memory IC Part Context

This part belongs to the 24AA32AF/24LC32AF family of 32 Kbit Serial EEPROMs. The 'LC' designation indicates operation down to 2.5V, distinguishing it from the 'AA' series which supports voltages down to 1.7V. The 'T' suffix denotes tape and reel packaging, while 'I' signifies the Industrial temperature range.

Memory IC Replacement Considerations

24LC32AF-I/SN

Memory IC FAQ

How does the hardware write-protect feature function?

When the WP pin is tied to VCC, write operations are inhibited for the upper 1/4 of the array (addresses C00h-FFFh), while read operations remain unaffected.

What is the maximum clock frequency supported?

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