24AA1026-I/ST

Memory IC Overview

The Microchip Technology 24AA1026-I/ST is a 1 Mbit (128K x 8) serial EEPROM featuring an I²C-compatible 2-wire interface. It operates within a supply voltage range of 1.7V to 5.5V and supports clock frequencies up to 400 kHz in the industrial temperature range (-40°C to +85°C). The device includes a 128-byte page write buffer, hardware write protection via the WP pin, and Schmitt trigger inputs for noise suppression. It offers over one million erase/write cycles and data retention exceeding 200 years.

Memory IC Feature Summary

• Supports byte and page write operations with a 128-byte on-chip page buffer
• Hardware write-protect capability via the WP pin to inhibit array writes
• Schmitt trigger inputs provide improved noise spike suppression
• Output slope control designed to eliminate ground bounce effects

Memory IC Applications

• Personal communications systems requiring low-power non-volatile storage
• Data acquisition applications needing reliable parameter retention
• Embedded systems utilizing I²C bus architectures
• Devices requiring hardware-level write protection for critical data

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm the voltage range compatibility with your system design, as the 'I' suffix denotes industrial specifications. Ensure the I²C address configuration aligns with your bus topology constraints before finalizing procurement.

Memory IC Selection Notes

Select this component when a 1 Mbit capacity is required with I²C connectivity. It is suitable for designs operating between 1.7V and 5.5V. Consider the 128-byte page size for write efficiency. Verify that the 400 kHz maximum clock frequency meets your system's timing requirements.

Memory IC Part Context

This part belongs to the 24XX1026 family of serial EEPROMs from Microchip Technology. It shares functional similarities with the 24LC1026 and 24FC1026 but differs in voltage ranges and clock speeds. The 'I' suffix indicates compliance with industrial temperature standards, distinguishing it from automotive or commercial variants.

Memory IC Replacement Considerations

The 24LC1026 serves as a compatible alternative with similar functionality but requires a minimum supply voltage of 2.5V. The 24FC1026 offers higher speed capabilities up to 1 MHz but also has specific voltage constraints. Verify electrical characteristics match your application needs before substitution.