25LC080A-E/P

Overview

The Microchip Technology 25LC080A-E/P is an 8 Kbit (1024 x 8-bit) Serial Electrically Erasable PROM featuring a 16-byte page size. It operates within a supply voltage range of 2.5 V to 5.5 V and supports a maximum clock frequency of 10 MHz via a standard SPI-compatible interface. The device utilizes an 8-lead PDIP package and is rated for an industrial temperature range of -40°C to +85°C.

Feature Summary

• Supports up to 1,000,000 erase/write cycles with data retention exceeding 200 years.
• Includes programmable block write protection allowing selection of none, one-quarter, one-half, or all array segments.
• Features built-in power-on/off data protection circuitry and a dedicated hold pin to pause serial communication.

Applications

• Microcontroller system configuration storage
• Calibration parameter persistence
• Embedded application log caching

Procurement Notes

Verify the specific suffix 'E' confirms automotive-grade temperature ratings (-40°C to +125°C) against the datasheet specifications. Confirm the 'P' suffix corresponds to the 8-lead PDIP package type. Ensure the ordering documentation matches the exact part number to avoid confusion with similar variants in the 25LC080 family.

Selection Notes

Select this component when a robust non-volatile memory solution is required for systems operating between 2.5 V and 5.5 V. The 8-lead PDIP package facilitates through-hole prototyping and manufacturing. Consider the 16-byte page write capability for efficient data handling in applications requiring frequent small updates.

Part Context

This device belongs to the 25LC080A/B series of low-voltage Serial EEPROMs from Microchip Technology. It shares architectural similarities with the 25AA080A/B but differs in minimum operating voltage requirements. The series provides a standardized SPI interface compatible with various microcontroller families.

Replacement Considerations

Public confirmed substitute part numbers: 25LC080C-E/P, 25LC080B-E/P.

FAQ

How does the HOLD pin function during operation?

The HOLD pin allows the user to suspend transmission to the device mid-sequence without resetting the serial sequence. Transitions on SI, SCK, and SO are ignored while held low.

What determines the write protection status of the array?

Write protection is determined by the WPEN bit in the Status Register and the state of the physical WP pin. Hardware write protection is enabled when WP is low and WPEN is high.