24LC1026-E/P

Memory IC Overview

The Microchip Technology 24LC1026-E/P is a 128K x 8 (1 Mbit) serial electrically erasable PROM featuring an I2C-compatible 2-wire interface. It operates within a voltage range of 2.5V to 5.5V and supports clock frequencies up to 400 kHz. The device utilizes an 8-lead PDIP package and provides hardware write protection via the WP pin. Key electrical characteristics include a maximum read current of 450 µA, standby current of 5 µA, and data retention exceeding 200 years with over one million erase/write cycles.

Memory IC Feature Summary

• Supports both byte and page write operations with a 128-byte page buffer
• Features Schmitt trigger inputs for enhanced noise suppression
• Includes hardware write protection controlled by the WP pin
• Capable of cascading up to four devices on the same bus

Memory IC Applications

• Personal communications systems
• Data acquisition applications
• Advanced low-power electronic designs

Memory IC Procurement Notes

Verify that the ordering suffix 'P' corresponds to the 8-lead Plastic Dual In-Line package. Confirm the temperature grade 'E' indicates operation from -40°C to +125°C. Ensure the required voltage supply aligns with the specified 2.5V to 5.5V operational range for this specific variant.

Memory IC Selection Notes

Select this component when a 1 Mbit EEPROM capacity is required with I2C connectivity. The Automotive temperature grade (-40°C to +125°C) makes it suitable for harsh environments. Consider the 128-byte page write capability for efficient data management in memory-intensive applications.

Memory IC Part Context

This part belongs to the 24XX1026 family, which includes variants like the 24AA1026 and 24FC1026. While sharing the same core architecture and pinout, the 24LC1026 is distinguished by its specific 2.5V minimum operating voltage and extended industrial/automotive temperature rating compared to other family members.

Memory IC Replacement Considerations

Direct functional substitutes within the same package and specification include the 24LC1026-I/P for standard industrial temperature ranges or the 24AA1026/P if lower voltage operation down to 1.7V is acceptable.

Memory IC FAQ

How does the WP pin function?

Connecting the WP pin to VCC inhibits all write operations while allowing reads. Connecting it to VSS enables write operations.

Can multiple devices share the same bus?

Yes, up to four 24LC1026 devices can be connected to the same I2C bus using the A1 and A2 chip select pins.