24AA1026-I/SM

Memory IC Overview

The Microchip Technology 24AA1026-I/SM is a 1 Mbit (128K x 8) Serial Electrically Erasable PROM featuring an I²C-compatible 2-Wire interface. It operates across a voltage range of 1.7V to 5.5V with a maximum clock frequency of 400 kHz. The device supports random and sequential reads, byte writes, and page writes up to 128 bytes. It includes hardware write protection via the WP pin and Schmitt trigger inputs for noise suppression. The Industrial temperature grade covers -40°C to +85°C.

Memory IC Feature Summary

• Low-Power CMOS technology with read current of 450 µA and standby current of 5 µA
• Hardware Write-Protect capability via the WP pin to inhibit array writes
• Schmitt Trigger inputs on SDA and SCL pins for improved noise spike suppression
• Output slope control designed to eliminate ground bounce during operation

Memory IC Applications

• Personal communications devices requiring non-volatile data storage
• Data acquisition systems needing reliable parameter retention
• Embedded controllers utilizing I²C bus architecture
• Industrial monitoring equipment operating in noisy environments

Memory IC Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature range (-40°C to +85°C) and '/SM' indicates the SOIJ package variant. Confirm the specific voltage requirements align with the 1.7V to 5.5V operational range specified for the 24AA1026 series. Ensure compatibility with the host system's I²C pull-up resistor values for the intended clock speed.

Memory IC Selection Notes

Select this component when a 1 Mbit EEPROM is required with low power consumption and robust noise immunity. The Industrial temperature rating makes it suitable for broader environmental conditions compared to Commercial grades. The SOIJ package offers a compact surface-mount solution. Consider the 400 kHz clock limit at lower voltages when designing high-speed communication interfaces.

Memory IC Part Context

This part belongs to the 24XX1026 family of serial EEPROMs from Microchip Technology. It shares architectural similarities with the 24LC1026 and 24FC1026 but differs in voltage ranges and clock speeds. The 24AA1026 specifically supports the widest voltage range starting at 1.7V, making it distinct within the lineup for ultra-low voltage applications.

Memory IC Replacement Considerations

The 24LC1026 serves as a functional substitute if the application voltage remains above 2.5V. Verify that the replacement package matches the footprint or requires adapter design changes.