25LC080BT-E/ST

Overview

The Microchip Technology 25LC080BT-E/ST is an 8 Kbit (1024 x 8-bit) Serial Electrically Erasable PROM. It features a 32-byte page size and operates via a standard SPI-compatible serial bus with clock frequencies up to 10 MHz. The device supports a supply voltage range of 2.5V to 5.5V and is housed in an 8-lead TSSOP package. It is rated for the Automotive temperature range, functioning reliably from -40°C to +125°C.

Feature Summary

• Supports 32-byte page write operations for efficient data storage.
• Includes hardware write protection via dedicated WP pin and Status Register bits.
• Features self-timed erase and write cycles with internal timing control.
• Provides high reliability with over one million erase/write cycle endurance.

Applications

• Automotive electronic systems requiring extended temperature operation
• Industrial controllers utilizing SPI communication interfaces
• Embedded memory storage for configuration data

Procurement Notes

Verify that the specific suffix 'E' confirms the automotive temperature rating (-40°C to +125°C). Confirm the 'B' designation indicates the 32-byte page size variant rather than the 16-byte version. Ensure the 'ST' suffix matches the required 8-lead TSSOP package dimensions for your PCB layout.

Selection Notes

Select this component when automotive-grade temperature stability is mandatory. The 32-byte page size offers higher throughput compared to older 16-byte variants. Verify system voltage compatibility within the 2.5V to 5.5V range. Consider the TSSOP footprint constraints against available board space.

Part Context

This part belongs to the 25LC080A/B family of 8K SPI Bus Serial EEPROMs. The 'B' suffix distinguishes it as the 32-byte page version, while 'A' denotes the 16-byte page version. The 'E' suffix specifies the automotive qualification level, differentiating it from the Industrial 'I' grade which covers -40°C to +85°C.

Replacement Considerations

25LC080BT-I/ST

FAQ

What is the difference between the 25LC080A and 25LC080B versions?

The primary difference is the page size; the 25LC080A supports 16-byte pages, while the 25LC080B supports 32-byte pages.

How does the HOLD pin function during operation?

The HOLD pin allows the user to pause serial communication without resetting the sequence. Inputs are ignored while held low, and operation resumes when the pin is brought high.