25LC080AT-E/ST

Overview

The Microchip Technology 25LC080AT-E/ST is an 8 Kbit Serial Electrically Erasable PROM featuring a 1024 x 8-bit organization. It operates via a Serial Peripheral Interface (SPI) compatible bus with a maximum clock frequency of 10 MHz. The device supports a supply voltage range of 2.5 V to 5.5 V and utilizes a TSSOP-8 package. It is rated for an extended temperature range of -40°C to +125°C, ensuring reliability in automotive and industrial environments.

Feature Summary

• Supports high-speed SPI communication with a maximum clock frequency of 10 MHz
• Includes programmable block write protection for selective array security
• Features built-in power-on/off data protection circuitry and a write enable latch
• Provides a Hold pin capability to pause serial transmission without resetting the sequence

Applications

• Automotive electronic systems requiring extended temperature operation
• Industrial control devices needing non-volatile data storage
• Microcontroller-based systems utilizing SPI interfaces for configuration memory

Procurement Notes

Verify that the specific suffix 'E' corresponds to the Automotive grade (-40°C to +125°C) and 'ST' indicates the TSSOP-8 package. Confirm the 'A' version designation aligns with the 16-byte page size requirement. Ensure compatibility with the required supply voltage range of 2.5 V to 5.5 V for your target application environment.

Selection Notes

Select this component when an 8 Kbit capacity is sufficient for storing calibration data or user settings. The Automotive grade ensures stability under harsh thermal conditions. The TSSOP-8 package offers a compact surface-mount solution suitable for space-constrained PCB designs. Verify that the host microcontroller supports the necessary SPI modes and voltage levels.

Part Context

This part belongs to the 25LC080A/B family of 8 Kbit Serial EEPROMs from Microchip Technology. It shares functional similarities with other members like the 25AA080A but differs in voltage specifications and temperature ratings. The 'A' version specifically defines a 16-byte page size, distinguishing it from the 'B' version which uses a 32-byte page size.

Replacement Considerations

Direct substitutes within the same family include the 25LC080BT-E/ST, which features a 32-byte page size instead of 16 bytes. Other variants such as the 25LC080A-I/ST offer Industrial temperature ranges (-40°C to +85°C). Ensure page size differences are accounted for in software drivers when swapping between 'A' and 'B' versions.