25LC080CT-E/MS

Overview

The Microchip Technology 25LC080CT-E/MS is an 8 Kbit Serial Electrically Erasable PROM featuring a 1024 x 8-bit organization. It operates on a 2.5V to 5.5V supply voltage and supports a maximum clock frequency of 10 MHz via a compatible SPI bus. The device utilizes an 8-lead MSOP package with a 16-byte page size. It provides high reliability, including over 1 million erase/write cycles and data retention exceeding 200 years.

Feature Summary

• Supports serial communication through a standard four-wire SPI interface with separate data in and out lines.
• Includes programmable block write protection allowing selection of none, one-quarter, one-half, or all array segments.
• Features built-in power-on/off data protection circuitry and a write enable latch to prevent inadvertent writes.
• Provides a hold function to pause serial transmission without resetting the sequence for higher priority interrupt servicing.

Applications

• Data storage in microcontroller systems requiring non-volatile memory
• Configuration parameter storage in industrial control devices
• Calibration data retention in automotive electronic modules

Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature range (-40°C to +125°C) and 'MS' denotes the MSOP package. Confirm the 'C' version designation corresponds to the 16-byte page size requirement. Ensure compatibility with the host system's SPI voltage levels and check for RoHS compliance status before finalizing procurement orders.

Selection Notes

Select this component when an automotive-grade temperature range is required alongside low-power CMOS technology. Compare against the 'I' grade variant if the application operates within the industrial temperature range (-40°C to +85°C). Consider the 25LC080D variant if a 32-byte page size is preferred for larger data blocks. Verify that the 2.5V minimum supply voltage aligns with the system power rails.

Part Context

This part belongs to the 25XX080C/D family of 8 Kbit Serial EEPROMs from Microchip Technology. The family includes variants with different voltage ranges (25AA vs 25LC), temperature grades (Industrial vs Automotive), and page sizes ('C' vs 'D'). The 25LC080C specifically targets applications needing robust performance across wide temperature extremes.

Replacement Considerations

• 25LC080C-I/MS

FAQ

How does the HOLD pin function during serial communication?

The HOLD pin allows the user to suspend transmission to the device mid-sequence without retransmitting the entire sequence. Transitions on SI, SCK, and SO are ignored while held low, and communication resumes when the pin is brought high while SCK is low.

What determines the physical page boundary for write operations?

Page write operations are limited to bytes within a single physical page. Boundaries start at addresses that are integer multiples of the page buffer size (16 bytes for the 'C' version). Writing across a boundary causes data to wrap around to the beginning of the current page.