25AA080-I/SN

Memory IC Overview

The Microchip Technology 25AA080-I/SN is an 8 Kbit (1024 x 8-bit) Serial Electrically Erasable PROM. It features a 1 MHz maximum clock frequency and operates within a supply voltage range of 1.8 V to 5.5 V. The device utilizes an SPI-compatible serial bus for communication, including SCK, SI, SO, CS, HOLD, and WP pins. It is housed in an 8-lead Plastic Small Outline (SOIC) package with a 150 mil body width. The component supports industrial temperature ranges from -40°C to +85°C.

Memory IC Feature Summary

• Supports block write protection allowing selection of none, 1/4, 1/2, or all array segments.
• Includes built-in power-on/off data protection circuitry and a write enable latch.
• Features a hold pin to pause serial transmission without resetting the sequence.

Memory IC Applications

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

Memory IC Procurement Notes

Verify the specific suffix 'I/SN' corresponds to the Industrial temperature range (-40°C to +85°C) and the 8-lead SOIC package. Confirm that the design accounts for the device being marked as not recommended for new designs; consider updated alternatives like the 25AA080A/B series if applicable to the project lifecycle.

Memory IC Selection Notes

Select this component when low-power CMOS technology is required for non-volatile memory applications. Ensure the system interface supports the standard SPI protocol with separate data input and output lines. Verify that the operating voltage falls within the 1.8 V to 5.5 V range and that the 1 MHz clock speed meets the system timing requirements.

Memory IC Part Context

This part belongs to the 25XX080 family of 8 Kbit Serial EEPROMs manufactured by Microchip Technology. The family includes variants such as the 25LC080 and 25C080, which differ primarily in minimum operating voltage and maximum clock frequency specifications while sharing similar functional architectures and pinouts.

Memory IC Replacement Considerations

Public documentation indicates the 25AA080A/B series as updated alternatives. Verify compatibility regarding voltage ranges and clock speeds before substitution.

Memory IC FAQ

How does the Hold pin function during serial communication?

The Hold pin suspends transmission to the device mid-sequence without requiring retransmission. Inputs are ignored except for Chip Select, allowing the host to service interrupts.

What is the purpose of the Write Protect (WP) pin?

The WP pin prohibits writes to nonvolatile bits in the Status register when low and WPEN is high. When high, all functions operate normally.