25AA080DT-I/ST

Memory IC Overview

The Microchip Technology 25AA080DT-I/ST is an 8 Kbit (1024 x 8-bit) Serial Electrically Erasable PROM. It utilizes a SPI-compatible serial bus with SCK, SI, SO, and CS signals for access. The device supports a maximum clock frequency of 10 MHz at VCC levels between 4.5V and 5.5V. It features a 32-byte page size and operates within a supply voltage range of 1.8V to 5.5V. The component is housed in an 8-lead TSSOP package and is rated for industrial temperatures from -40°C to +85°C.

Memory IC Feature Summary

• Supports high-speed SPI communication with up to 10 MHz clock frequency
• Includes programmable block write protection for array security
• Features built-in power-on/off data protection circuitry
• Provides hold functionality to pause serial sequences without resetting

Memory IC Applications

• Microcontroller system data storage
• Configuration parameter retention
• Calibration value logging

Memory IC Procurement Notes

Verify the specific suffix 'I/ST' confirms the Industrial temperature grade (-40°C to +85°C) and TSSOP-8 package type. Confirm the 'D' variant designation indicates the 32-byte page size architecture. Ensure the 1.8V minimum operating voltage requirement aligns with the target system's power rails before finalizing procurement specifications.

Memory IC Selection Notes

Select this component when low-voltage operation down to 1.8V is required alongside standard SPI interfaces. The Industrial temperature rating makes it suitable for broader environmental conditions compared to commercial variants. The 32-byte page buffer offers efficient sequential write capabilities for moderate data throughput applications requiring non-volatile storage.

Memory IC Part Context

This part belongs to the 25XX080C/D family of 8K SPI Bus Serial EEPROMs manufactured by Microchip Technology. The 'AA' prefix denotes support for 1.8V operation, while the 'D' suffix specifies the 32-byte page size configuration. The 'I' indicates the Industrial temperature range, and 'ST' identifies the Thin Shrink Small Outline Package.

Memory IC Replacement Considerations

The 25LC080DT-I/ST serves as a functional substitute but requires a minimum supply voltage of 2.5V instead of 1.8V. Verify that the target application's power supply meets the higher voltage threshold for the LC variant before considering substitution.