25AA080CT-I/ST

Memory IC Overview

The Microchip Technology 25AA080CT-I/ST is an 8 Kbit (1024 x 8-bit) Serial Electrically Erasable PROM. It operates within a voltage range of 1.8V to 5.5V and supports a maximum clock frequency of 10 MHz via a standard SPI-compatible serial bus. The device features a 16-byte page size, self-timed erase/write cycles with a maximum duration of 5 ms, and industrial temperature coverage from -40°C to +85°C. It is housed in an 8-lead TSSOP package.

Memory IC Feature Summary

• Supports low-power CMOS technology with standby current as low as 1 µA at 85°C.
• Includes built-in write protection mechanisms such as power-on/off data protection and a dedicated write-protect pin.
• Offers high reliability with over 1 million erase/write cycle endurance and greater than 200 years of data retention.
• Features a hold function that allows the host to pause serial communication without resetting the sequence.

Memory IC Applications

• Data storage for microcontroller systems requiring non-volatile memory
• Configuration parameter storage in industrial control devices
• Calibration data retention in sensor interfaces

Memory IC Procurement Notes

Verify the specific suffix 'CT' indicates cut tape packaging rather than tube or reel formats when reviewing distributor listings. Confirm the 'I' designation corresponds to the industrial temperature range (-40°C to +85°C). Ensure the component matches the 25AA series voltage specifications (1.8V minimum) rather than the 25LC series if low-voltage operation is required.

Memory IC Selection Notes

Select this component for applications requiring small form factor surface-mount integration with SPI interface compatibility. The 1.8V minimum operating voltage makes it suitable for modern low-voltage logic systems. Consider the 16-byte page size limitation for write operations, which requires software management to prevent data wrap-around across page boundaries.

Memory IC Part Context

This part belongs to the 25XX080C/D family of 8K SPI EEPROMs. The 'AA' prefix denotes a 1.8V compatible voltage range, distinguishing it from the 'LC' variant which starts at 2.5V. The 'T' suffix typically refers to the tape and reel or cut tape packaging format, while 'ST' specifies the TSSOP package type.

Memory IC Replacement Considerations

25AA080C-I/ST

Memory IC FAQ

How does the HOLD pin function during serial communication?

The HOLD pin suspends transmission to the device without resetting the serial sequence. When pulled low while SCK is low, the SI, SCK, and SO pins enter a high-impedance state, allowing the host to service higher priority interrupts.

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

If a page write attempts to cross a physical page boundary, the data wraps around to the beginning of the current page, overwriting previously stored data, rather than writing to the next page.