25LC080B-E/SN

Overview

The Microchip Technology 25LC080B-E/SN is an 8 Kbit Serial Electrically Erasable PROM featuring a 1024 x 8-bit organization. It utilizes a standard SPI-compatible serial bus with SCK, SI, SO, and CS signals for communication. The device supports a maximum clock frequency of 10 MHz and operates within a supply voltage range of 2.5V to 5.5V. It includes a 32-byte page size and offers block write protection capabilities. The component is housed in an 8-lead SOIC package and is rated for an extended automotive temperature range of -40°C to +125°C.

Feature Summary

• Supports high-speed synchronous serial communication via a standard SPI interface with hold functionality for interrupt servicing.
• Features programmable hardware write protection controlled by the WP pin and Status Register bits to prevent inadvertent data modification.
• Includes built-in power-on/off data protection circuitry and a self-timed write cycle mechanism.

Applications

• Automotive electronic systems requiring extended temperature operation
• Industrial control devices needing non-volatile parameter storage
• Embedded microcontroller applications utilizing SPI interfaces

Procurement Notes

Verify that the specific suffix 'E' corresponds to the required automotive temperature grade (-40°C to +125°C) rather than the industrial grade. Confirm the 'SN' designation matches the required 8-lead SOIC package dimensions. Ensure the 'B' version is selected if a 32-byte page size is necessary for the application design.

Selection Notes

Select this part when an SPI EEPROM with automotive-grade reliability and extended temperature tolerance is required. The 'B' variant provides a larger 32-byte page buffer compared to the 'A' version, which may improve write efficiency. Ensure the system voltage remains within the 2.5V to 5.5V operating range to maintain specified performance levels.

Part Context

This component belongs to the 25XX080A/B family of 8 Kbit Serial EEPROMs manufactured by Microchip Technology. The family shares common architectural features but varies in voltage ranges, page sizes, and temperature ratings. The 25LC080B specifically targets applications requiring robust data retention and high endurance in demanding environments.

Replacement Considerations

25LC080A-E/SN

FAQ

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

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

How does the HOLD pin function during serial communication?

Pulling the HOLD pin low pauses serial communication without resetting the sequence, allowing the host to service higher priority interrupts. Communication resumes when the pin is brought high.