25AA080AT-I/ST

Memory IC Overview

The Microchip Technology 25AA080AT-I/ST is an 8 Kbit (1024 x 8-bit) Serial Electrically Erasable PROM. It features a 16-byte page size and operates on a 1.8V to 5.5V supply voltage range with a maximum clock frequency of 10 MHz. The device utilizes an SPI-compatible interface and is housed in an 8-lead TSSOP package. It supports industrial temperature ranges from -40°C to +85°C, offers over 1,000,000 erase/write cycles, and provides data retention exceeding 200 years.

Memory IC Feature Summary

• Supports serial communication via a standard four-wire SPI compatible bus with separate data input and output lines.
• Includes programmable block write protection allowing selective protection of none, one-quarter, one-half, or the entire memory array.
• Features built-in power-on/off data protection circuitry combined with a write enable latch to prevent inadvertent writes.
• Provides a hold function that suspends serial transmission without resetting the sequence, facilitating higher priority interrupt servicing.

Memory IC Applications

• Direct interfacing with microcontroller families possessing built-in synchronous serial ports
• Data storage for system configuration parameters requiring non-volatile retention
• Embedded applications utilizing discrete I/O lines programmed for software-based serial communication

Memory IC Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature rating (-40°C to +85°C). Confirm the 'A' designation indicates the 16-byte page size variant rather than the 32-byte 'B' version. Ensure the 'ST' suffix matches the required 8-lead TSSOP package dimensions. Cross-reference the datasheet revision history for any updates regarding pin functions or electrical characteristics prior to finalizing procurement specifications.

Memory IC Selection Notes

Select this component when low-power CMOS technology and high reliability are required for non-volatile data storage. Choose the 25AA080AT-I/ST specifically for systems operating within the 1.8V to 5.5V voltage range and requiring industrial temperature stability. Consider the 16-byte page size limitation for write operations when designing application software to ensure page boundary constraints are respected during data logging tasks.

Memory IC Part Context

This device belongs to the 25XX080A/B family of 8 Kbit Serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 25LC080A/B series but differs primarily in its minimum operating voltage specification. The family supports multiple package options including PDIP, SOIC, MSOP, and TSSOP, providing flexibility for various PCB layout requirements while maintaining consistent SPI interface functionality across all variants.

Memory IC Replacement Considerations

25AA080A-I/ST