25LC080CT-E/ST

Overview

The Microchip Technology 25LC080CT-E/ST is an 8 Kbit Serial Electrically Erasable PROM featuring a 1024 x 8-bit organization. It operates via a SPI-compatible serial bus with a maximum clock frequency of 10 MHz at VCC levels between 4.5V and 5.5V. The device supports a supply voltage range of 2.5V to 5.5V and utilizes a 16-byte page size architecture. It is housed in an 8-lead TSSOP package and is rated for an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Supports hardware write protection through the WP pin and STATUS register bits to prevent inadvertent data modification.
• Includes built-in power-on/off data protection circuitry and a write enable latch to secure array integrity.
• Features a HOLD input that allows suspension of serial communication without resetting the internal address pointer.

Applications

• Data logging systems requiring non-volatile storage
• Configuration parameter storage in embedded controllers
• Calibration value retention in industrial sensors

Procurement Notes

Verify the specific suffix 'E' confirms the automotive-grade temperature rating (-40°C to +125°C) and 'ST' denotes the TSSOP package. Confirm the 'C' variant designation aligns with the required 16-byte page size, as 'D' variants utilize 32-byte pages. Ensure the ordering code matches the exact voltage and package requirements for the target design.

Selection Notes

Select this component when an SPI interface is required for small-scale non-volatile memory tasks. The 'E' grade is necessary for applications operating in high-temperature environments up to 125°C. Consider the 16-byte page write limitation for software buffer management. Verify system voltage compatibility within the 2.5V to 5.5V range before integration.

Part Context

This part belongs to the 25XX080C/D family of 8 Kbit Serial EEPROMs from Microchip Technology. The family includes variants with different page sizes ('C' for 16 bytes, 'D' for 32 bytes) and voltage ranges (AA for 1.8V start, LC for 2.5V start). The 25LC080CT-E/ST specifically combines the 2.5V minimum voltage operation with the extended temperature range and TSSOP packaging.

Replacement Considerations

25LC080C-E/ST

FAQ

How does the HOLD pin function during serial communication?

The HOLD pin suspends data transfer on the SO pin while keeping the CS pin active. Transitions on SI and SCK are ignored during this state, allowing the host to service interrupts without losing the current address pointer.

What is the difference between the 'C' and 'D' versions regarding page writes?

The 'C' version devices support a 16-byte page size, whereas the 'D' version devices support a 32-byte page size. Page write operations must not cross physical page boundaries in either variant.