25LC080-I/SN

Overview

The Microchip Technology 25LC080-I/SN is an 8 Kbit (1024 x 8-bit) Serial Electrically Erasable PROM. It utilizes a standard SPI-compatible serial bus for communication, requiring SCK, SI, SO, and CS signals. The device operates within a voltage range of 2.5 V to 5.5 V and supports a maximum clock frequency of 2 MHz at this supply level. It features a 16-byte page write capability with a self-timed write cycle of up to 5 ms. The component is housed in an 8-lead Plastic Small Outline (SOIC) package and is rated for industrial temperatures ranging from -40°C to +85°C.

Feature Summary

• Supports block write protection allowing selective protection of none, one-quarter, one-half, or the entire memory array via status register configuration.
• Includes built-in power-on/off data protection circuitry and a write enable latch to prevent inadvertent writes during operation.
• Features a hold pin that allows suspension of serial communication without resetting the sequence, facilitating higher priority interrupt servicing.

Applications

• Microcontroller system configuration storage
• Calibration parameter persistence
• Data logging and event recording

Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature range (-40°C to +85°C) and 'SN' denotes the 8-lead SOIC package. Confirm the base part number corresponds to the 2.5V–5.5V operating voltage variant rather than the 1.8V AA series. Ensure compatibility with existing SPI bus timing requirements, specifically the 2 MHz maximum clock frequency limit at the target supply voltage.

Selection Notes

Select this component when a non-volatile memory solution requires simple SPI interface integration with microcontrollers lacking dedicated hardware EEPROM controllers. It is suitable for applications needing moderate endurance levels and robust write protection mechanisms. Consider alternative variants if lower voltage operation below 2.5V or extended automotive temperature ranges are required.

Part Context

This device belongs to the 25XX080 family of 8 Kbit Serial EEPROMs manufactured by Microchip Technology. The family includes voltage-specific variants such as the 25AA080 (1.8V) and 25C080 (5.0V). The 25LC080 specifically targets applications requiring a 2.5V minimum supply voltage while maintaining compatibility with standard 3.3V and 5V logic systems.

Replacement Considerations

Public confirmed substitute part numbers: 25LC080A-I/SN, 25LC080B-I/SN.