25LC080T/SN

Overview

The Microchip Technology 25LC080T/SN 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 communication. The device operates within a voltage range of 2.5V to 5.5V and supports a maximum clock frequency of 2 MHz at this supply level. It features a 16-byte page write capability and a self-timed write cycle time of 5 ms maximum. The component is housed in an 8-lead Plastic Small Outline (SN) package.

Feature Summary

• Supports block-level write protection allowing selection of none, one-quarter, one-half, or all array segments.
• Includes built-in power-on/off data protection circuitry and a write enable latch mechanism.
• Features a Hold pin that suspends serial transmission without resetting the sequence.

Applications

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

Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging and 'SN' denotes the 8-lead SOIC package. Confirm the temperature grade matches the required industrial range of -40°C to +85°C. Ensure the voltage specification aligns with the 2.5V to 5.5V operating window. Check for current manufacturer recommendations regarding new designs as noted in the datasheet header.

Selection Notes

Select this component for applications requiring low-power CMOS technology with read currents of 500 µA typical. Consider the 1 M cycle endurance and >200 year data retention for long-term reliability needs. Evaluate the 4000V ESD protection rating for robustness in high-static environments. Compare against the 25AA080 if lower voltage operation starting at 1.8V is necessary.

Part Context

This part belongs to the 25XX080 family of 8 Kbit SPI Serial EEPROMs from Microchip Technology. The family includes variants like the 25AA080 and 25C080 which differ primarily in minimum operating voltage and maximum clock frequency specifications. The 25LC080 specifically targets the 2.5V to 5.5V supply range.

Replacement Considerations

Public confirmed substitute part numbers include 25LC080-I/SN and 25LC080T-I/SN.

FAQ

How does the Hold function operate?

The Hold pin allows suspension of transmission during a serial sequence without retransmitting the entire sequence. It must be held high when not in use and pulled low while SCK is low to pause communication.

What is the purpose of the Write Enable Latch?

The Write Enable Latch must be set via the WREN instruction before any write operation can be completed internally. It resets automatically after power-up, successful execution of WRDI, WRSR, or WRITE instructions.