25LC080C-E/ST

Overview

The Microchip Technology 25LC080C-E/ST is an 8 Kbit (1024 x 8-bit) Serial Electrically Erasable PROM featuring SPI-compatible interface. It operates within a voltage range of 2.5V to 5.5V and supports a maximum clock frequency of 10 MHz at 4.5V ≤ VCC ≤ 5.5V. The device utilizes a TSSOP-8 package and is rated for industrial temperature ranges (-40°C to +85°C). Key electrical characteristics include a standby current of 1 µA max at +85°C and write cycle times up to 5 ms.

Feature Summary

• Supports sequential read operations with automatic address pointer incrementation across the full memory array.
• Includes built-in hardware write protection via the WP pin and software-configurable block protection levels.
• Features power-on/off data protection circuitry and a write enable latch to prevent inadvertent writes.

Applications

• Microcontroller system configuration storage
• Calibration parameter persistence
• Data logging in embedded systems

Procurement Notes

Verify the specific suffix 'E' confirms automotive temperature grade (-40°C to +125°C) and 'ST' denotes the TSSOP-8 package. Confirm RoHS compliance status as per the latest manufacturer documentation. Ensure the ordering part number matches the required page size variant, as 'C' indicates 16-byte pages.

Selection Notes

Select this component when SPI interface compatibility is required alongside non-volatile storage needs. Consider the 16-byte page write limitation which requires application software to manage page boundaries carefully to avoid data wrap-around. Verify voltage supply stability within the 2.5V to 5.5V range for optimal performance.

Part Context

This device belongs to the 25LC080C/D family of 8K SPI EEPROMs. The 'C' variant specifies a 16-byte page size, distinct from the 'D' variant which offers 32-byte pages. It is designed for direct interfacing with microcontrollers lacking dedicated synchronous serial ports via discrete I/O lines if necessary.

Replacement Considerations

25LC080D-E/ST

FAQ

How does the HOLD pin function during serial communication?

The HOLD pin suspends transmission without resetting the serial sequence. It must be pulled low while SCK is low to pause communication, tri-stating the SO line until brought high again.

What happens if a page write crosses a physical page boundary?

If a page write attempts to cross a boundary, the data wraps around to the beginning of the current page, overwriting existing data instead of proceeding to the next page.