24LC1025-E/P

Memory IC Overview

The Microchip Technology 24LC1025-E/P is a 128K x 8 (1024K bit) Serial Electrically Erasable PROM. It operates with a supply voltage range of 2.5V to 5.5V and supports I2C™ compatible 2-Wire Serial Interface at clock frequencies up to 400 kHz. The device features a 128-byte page write buffer, hardware write-protect capability, and Schmitt trigger inputs for noise suppression. It is housed in an 8-lead PDIP package and rated for extended industrial temperature operation from -40°C to +125°C.

Memory IC Feature Summary

• Supports cascading up to four devices on the same data bus using configurable chip select inputs.
• Includes hardware write-protect functionality controlled by the WP pin to inhibit array writes.
• Features output slope control designed to eliminate ground bounce during signal transitions.

Memory IC Applications

• Personal communications systems requiring non-volatile data storage
• Data acquisition applications needing reliable memory retention
• Embedded systems utilizing I2C bus architecture

Memory IC Procurement Notes

Verify that the ordering suffix matches the required specifications. The 'E' designation indicates extended industrial temperature range (-40°C to +125°C), while '/P' specifies the 8-lead PDIP package. Confirm voltage requirements align with the 2.5V to 5.5V operating range before procurement.

Memory IC Selection Notes

Select this component when an I2C interface is required for 1Mbit EEPROM capacity. Ensure the application environment stays within the specified -40°C to +125°C temperature limits. Verify that the system power supply remains stable between 2.5V and 5.5V to maintain proper device functionality and timing parameters.

Memory IC Part Context

This part belongs to the 24XX1025 family, which includes the 24AA1025 and 24FC1025 variants. These devices share identical memory organization and interface protocols but differ in supply voltage ranges and maximum clock frequencies. The 24LC1025 specifically targets standard industrial voltage levels with robust performance characteristics.

Memory IC Replacement Considerations

The 24AA1025 serves as a functional substitute with a wider voltage range (1.7V to 5.5V). The 24FC1025 offers higher speed capabilities up to 1 MHz. Ensure package compatibility and verify temperature ratings match the specific application requirements when substituting these family members.

Memory IC FAQ

How does the A2 pin affect device operation?

The A2 pin is a non-configurable Chip Select input that must be hard-wired to VCC. If left floating or tied to VSS, the device operation becomes undefined.

What happens if a page write crosses a physical boundary?

If a Page Write command attempts to cross a physical page boundary, the data wraps around to the beginning of the current page instead of writing to the next page.