24AA32AFT-I/ST

Memory IC Overview

The Microchip Technology 24AA32AFT-I/ST is a 32 Kbit Electrically Erasable PROM organized as a single block of 4K x 8-bit memory. It operates with a single supply voltage ranging from 1.7V to 5.5V and supports a maximum clock frequency of 400 kHz at VCC ≥ 2.5V, or 100 kHz for voltages below 2.5V. The device features an I²C compatible 2-wire serial interface, a 32-byte page write buffer, and hardware write-protect capability for the upper quarter of the array (addresses C00h-FFFh). It is housed in an 8-lead TSSOP package and rated for industrial temperature operation between -40°C and +85°C.

Memory IC Feature Summary

• Hardware write-protect mechanism secures the upper quarter of the memory array against unauthorized modifications.
• Integrated 32-byte page write buffer enables efficient data transfer by reducing internal write cycle overhead.
• Schmitt trigger inputs provide enhanced noise suppression for reliable signal integrity on serial communication lines.

Memory IC Applications

• Personal communications devices requiring non-volatile data storage
• Data acquisition systems needing low-power memory solutions
• Industrial control applications utilizing I²C bus architectures

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm compliance with RoHS directives and lead-free specifications before finalizing procurement orders. Ensure the selected variant aligns with the intended operating voltage range and interface requirements for the target system design.

Memory IC Selection Notes

Select this component when a low-voltage EEPROM with hardware write protection is required. The 24AA32A series supports operation down to 1.7V, making it suitable for battery-powered applications. Verify that the I²C bus speed requirements are met within the specified voltage constraints to ensure proper device functionality.

Memory IC Part Context

This part belongs to the 24AA32AF/24LC32A family of 32 Kbit Serial EEPROMs manufactured by Microchip Technology. The 'I' designation indicates an industrial temperature range rating, while the '/ST' suffix specifies the 8-lead Thin Shrink Small Outline Package (TSSOP) configuration. This family is designed for advanced low-power applications requiring reliable non-volatile storage.

Memory IC Replacement Considerations

The 24AA32AT-I/ST is a direct replacement offering the same electrical characteristics and pinout but supplied in tape and reel packaging instead of tubes.