24LC32AFT-I/MS

Memory IC Overview

The Microchip Technology 24LC32AFT-I/MS 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 transfer via a 2-wire serial bus protocol
• Includes a 32-byte page write buffer for efficient data programming
• 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 storage
• Data acquisition systems needing parameter retention
• Industrial control applications utilizing I2C communication
• Embedded systems requiring low-power EEPROM solutions

Memory IC Procurement Notes

Verify that the operating voltage meets the minimum 2.5V requirement for the 24LC32AF series, as it differs from the 1.7V minimum of the 24AA32AF variant. Confirm the package type matches the MSOP-8 specification and ensure the temperature grade corresponds to the Industrial (I) rating of -40°C to +85°C. Check RoHS compliance status if required by specific environmental regulations.

Memory IC Selection Notes

Select this component when an I2C-compatible EEPROM with hardware write protection is needed. The 24LC32AFT-I/MS is suitable for designs requiring operation between 2.5V and 5.5V. Consider the 32-byte page write capability for improved write performance compared to byte-write-only devices. Ensure the application does not require the lower voltage operation available in the 24AA32AF series.

Memory IC Part Context

This part belongs to the 24XX32AF family of 32 Kbit Serial EEPROMs from Microchip Technology. The 'L' in the part number indicates a 2.5V to 5.5V operating range, distinguishing it from the 'A' series which supports 1.7V. The 'T' suffix typically denotes tape and reel packaging, while 'I' specifies the industrial temperature range. The MSOP package provides a compact surface-mount solution.

Memory IC Replacement Considerations

The 24AA32AF series serves as a functional substitute but requires a minimum supply voltage of 1.7V instead of 2.5V. Other 32Kb I2C EEPROMs from different manufacturers may be compatible if they support the same pinout and I2C protocol, though electrical characteristics and timing parameters should be verified.