25LC080A-I/ST

Overview

The Microchip Technology 25LC080A-I/ST is an 8 Kbit (1024 x 8-bit) Serial Electrically Erasable PROM featuring a 16-byte page size. It utilizes a standard SPI-compatible interface with a maximum clock frequency of 10 MHz. The device operates within a supply voltage range of 2.5 V to 5.5 V and supports industrial temperature conditions from -40 °C to +85 °C. Packaged in an 8-lead TSSOP, it offers high reliability with over 1,000,000 erase/write cycles and data retention exceeding 200 years.

Feature Summary

• Supports sequential read operations for efficient data retrieval across memory addresses.
• Includes programmable block write protection allowing selective array security.
• Features hardware-based power-on/off data protection circuitry.
• Provides a hold function to pause serial communication without resetting the sequence.

Applications

• Microcontroller system configuration storage
• Calibration data preservation
• Parameter logging in industrial sensors

Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature range (-40 °C to +85 °C) and 'ST' indicates the 8-lead TSSOP package. Confirm the specific 'A' version designation matches the required 16-byte page size architecture before finalizing procurement specifications.

Selection Notes

Select this component when a low-pin-count non-volatile memory solution is required for SPI-based microcontrollers. Ensure the application voltage remains above 2.5 V, as lower voltages are not supported by the LC series. Consider the 16-byte page limit for write operations to optimize software timing and prevent data wrap-around errors.

Part Context

This part belongs to the 25XX080A/B family of 8 Kbit Serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 25AA080A variant but differs in minimum operating voltage requirements. The device is designed for direct interfacing with popular microcontroller families via the Serial Peripheral Interface.

Replacement Considerations

The 25LC080B-I/ST serves as a functional alternative within the same package, offering a 32-byte page size instead of 16 bytes. Software modifications may be necessary to accommodate the different page boundary logic during write sequences.