24AA32AFT-I/SN

Memory IC Overview

The Microchip Technology 24AA32AFT-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 and 100 kHz for VCC < 2.5V. The device operates on a single supply ranging from 1.7V to 5.5V, with maximum standby current of 1 μA and read current of 400 μA. It includes hardware write-protect functionality for the upper quarter of the array (addresses C00h-FFFh) via the WP pin.

Memory IC Feature Summary

• Hardware write-protect capability for the upper quarter of the memory array
• Supports cascading up to eight devices on the same bus using functional address lines
• Includes Schmitt trigger inputs for noise suppression and output slope control

Memory IC Applications

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

Memory IC Procurement Notes

Verify that the ordering suffix corresponds to the TSSOP package type and Industrial temperature grade. Confirm the specific revision level matches the design requirements, as packaging or assembly site changes may occur without altering the electrical function. Ensure compatibility with the target system's voltage levels and I²C bus timing constraints 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. It is suitable for designs operating between 1.7V and 5.5V where low standby power is critical. Consider the hardware write-protect feature if protection against accidental writes to the upper memory range is necessary. Verify that the industrial temperature range meets the environmental specifications of the end application.

Memory IC Part Context

This part belongs to the 24AA32AF/24LC32AF family of 32 Kbit Serial EEPROMs manufactured by Microchip Technology. The 'I' designation indicates an Industrial temperature range (-40°C to +85°C), while the 'SN' suffix specifies the 8-lead Thin Shrink Small Outline Package (TSSOP). It shares core electrical characteristics with other variants in the series, differing primarily in package style and temperature rating.

Memory IC Replacement Considerations

24AA32AT-I/SN