25LC1024-I/SM

Overview

The Microchip Technology 25LC1024-I/SM is a 1-Mbit (128K x 8) serial EEPROM utilizing an SPI-compatible interface. It operates within a voltage range of 2.5V to 5.5V and supports clock frequencies up to 20 MHz at higher voltages or 10 MHz at lower voltages. The device features a 256-byte page size, 1M erase/write cycle endurance, and data retention exceeding 200 years. It includes sector write protection, deep power-down mode, and operates across the industrial temperature range of -40°C to +85°C.

Feature Summary

• Supports byte-level and page-level write operations with self-timed erase cycles
• Includes hardware write protection via WP pin and software block protection bits
• Features deep power-down mode for low standby current consumption
• Provides electronic signature identification and hold functionality

Applications

• Microcontroller system configuration storage
• Calibration parameter persistence
• Embedded device logging and data archiving

Procurement Notes

Verify that the ordering suffix 'I' corresponds to the industrial temperature range (-40°C to +85°C). Confirm the 'SM' suffix matches the required 8-lead SOIJ package type. Ensure the specific revision level aligns with your design requirements. Cross-reference datasheet DS20002064E for exact electrical limits.

Selection Notes

Select this component when high-speed SPI communication is required alongside non-volatile storage. The 256-byte page size optimizes write throughput compared to byte-only devices. Verify that the operating voltage falls within the 2.5V to 5.5V range. Consider the 1M cycle endurance for applications requiring frequent updates.

Part Context

This part belongs to the 25LC1024 family of 1-Mbit serial EEPROMs from Microchip Technology. It shares architectural similarities with other density levels in the series but offers specific capacity and address mapping. The industrial grade variant ensures reliability in standard commercial and industrial environments.

Replacement Considerations

Compatible substitutes include the 25AA1024 series, which shares identical pinouts and instruction sets but may differ in voltage specifications. Verify that any replacement maintains the same package dimensions and thermal characteristics.