24AA1026-I/P

Memory IC Overview

The Microchip Technology 24AA1026-I/P is a 1 Mbit (128K x 8) serial electrically erasable PROM featuring an I²C-compatible 2-wire interface. It operates across a supply voltage range of 1.7V to 5.5V and supports clock frequencies up to 400 kHz within the industrial temperature range of -40°C to +85°C. The device utilizes an 8-lead PDIP package and includes a 128-byte page write buffer with a typical write cycle time of 3 ms.

Memory IC Feature Summary

• Supports cascading up to four devices on a single bus for expanded memory addressing
• Features hardware write protection via the WP pin to inhibit array writes
• Includes Schmitt trigger inputs and output slope control for noise suppression and ground bounce elimination

Memory IC Applications

• Personal communications systems requiring low-power non-volatile storage
• Data acquisition applications needing reliable byte and page write capabilities
• Embedded systems utilizing I²C bus architectures for configuration data retention

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the 'I' indicates the industrial temperature range and '/P' denotes the PDIP package. Confirm the voltage compatibility aligns with your system's power supply rails, noting the 1.7V minimum threshold. Ensure the design accounts for the necessary pull-up resistors on the SDA and SCL lines to maintain proper bus signaling levels during operation.

Memory IC Selection Notes

Select this component when a 1 Mbit capacity is required alongside standard I²C communication protocols. It is suitable for designs prioritizing low standby current and robust noise immunity through Schmitt triggers. Consider alternative variants if higher clock speeds or different package footprints are necessary, as this specific part is optimized for general-purpose industrial environments.

Memory IC Part Context

This device belongs to the 24XX1026 family of serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24LC1026 and 24FC1026 models but differs in operating voltage ranges and maximum clock frequency specifications. The family is designed to provide flexible memory solutions for various embedded applications requiring non-volatile data storage.

Memory IC Replacement Considerations

The 24LC1026 serves as a direct functional substitute within the same family, though it requires a minimum supply voltage of 2.5V compared to the 1.7V minimum of the 24AA1026. Verify voltage headroom before swapping these parts to ensure reliable operation under all expected supply conditions.