24AA1026T-I/SM

Memory IC Overview

The Microchip Technology 24AA1026T-I/SM is a 1 Mbit (128K x 8) serial EEPROM featuring an I2C-compatible 2-wire interface. It operates within a 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 Schmitt trigger inputs, hardware write protection, and a 128-byte page write buffer. It offers over one million erase/write cycles and data retention exceeding 200 years.

Memory IC Feature Summary

• Low-power CMOS technology with maximum read current of 450 µA and standby current of 5 µA
• Hardware write-protect capability via the WP pin to inhibit array writes
• Supports cascading up to four devices on the same data bus for expanded memory capacity
• Schmitt trigger inputs provide noise suppression and eliminate ground bounce

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
• Industrial control units operating within extended temperature ranges

Memory IC Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature grade (-40°C to +85°C) and 'SM' indicates the SOIC package. Confirm the 'T' suffix denotes tape and reel packaging if required by automated assembly processes. Ensure the specific revision matches the datasheet DS20002270E for accurate electrical characteristics.

Memory IC Selection Notes

Select this component when a 1 Mbit capacity is required with I2C compatibility across a wide voltage range starting at 1.7V. The Industrial grade variant is suitable for environments where temperatures do not exceed +85°C. Consider the 128-byte page write buffer for efficient data throughput compared to byte-write-only devices.

Memory IC Part Context

This part belongs to the 24XX1026 family, which also includes the 24LC1026 and 24FC1026 variants. These devices share identical functional architectures but differ in minimum operating voltage and maximum clock frequency specifications. The 24AA1026 specifically supports operation down to 1.7V, distinguishing it from the 2.5V minimum requirement of the 24LC1026.

Memory IC Replacement Considerations

The 24LC1026 serves as a functional substitute if the application voltage remains above 2.5V. The 24FC1026 offers higher speed capabilities up to 1 MHz but requires a minimum voltage of 1.8V. Verify package compatibility and temperature ratings before substituting.