25LC080C-I/SN

Overview

The Microchip Technology 25LC080C-I/SN is an 8 Kbit (1024 x 8-bit) Serial Electrically Erasable PROM accessed via a SPI-compatible serial bus. It operates within a voltage range of 2.5 V to 5.5 V and supports a maximum clock frequency of 10 MHz at 5.5 V. The device features a 16-byte page size, self-timed erase/write cycles with a maximum duration of 5 ms, and industrial temperature coverage from -40°C to +85°C. It is housed in an 8-lead SOIC package.

Feature Summary

• Supports high-speed SPI communication with a maximum clock frequency of 10 MHz.
• Includes programmable block write protection for none, 1/4, 1/2, or all of the memory array.
• Features built-in power-on/off data protection and a write enable latch mechanism.
• Provides a HOLD pin to pause serial transmission without resetting the sequence.

Applications

• Data storage in microcontroller systems requiring non-volatile memory
• Configuration parameter storage in industrial control devices
• Calibration data retention in sensor interfaces

Procurement Notes

Verify that the specific suffix 'I' corresponds to the Industrial temperature range (-40°C to +85°C) and 'SN' denotes the 8-lead SOIC package. Confirm the 'C' variant indicates the 16-byte page size, distinct from the 'D' variant which uses 32 bytes. Ensure the supply voltage requirements align with the 2.5 V to 5.5 V operational range specified for this part number.

Selection Notes

Select this component when an 8 Kbit EEPROM with SPI interface is required for industrial environments. It is suitable for applications needing hardware write protection and low standby current. Compare against the 25AA080C series if lower voltage operation down to 1.8 V is necessary, as the 25LC080C requires a minimum of 2.5 V.

Part Context

This device belongs to the 25XX080C/D family of 8 Kbit Serial EEPROMs manufactured by Microchip Technology. The family includes variants with different page sizes ('C' for 16 bytes, 'D' for 32 bytes) and voltage ranges (25LC for 2.5V-5.5V, 25AA for 1.8V-5.5V). The 25LC080C-I/SN specifically targets industrial applications with standard packaging.

Replacement Considerations

The 25LC080C-E/SN serves as an automotive-grade replacement offering extended temperature range up to +125°C. The 25LC080D-I/SN provides a larger 32-byte page size but maintains the same electrical characteristics otherwise.

FAQ

How does the HOLD pin function during serial communication?

The HOLD pin allows the host to pause serial communication without resetting the sequence. When pulled low while SCK is low, the SI, SCK, and SO pins enter a high-impedance state, ignoring transitions until HOLD is released.

What is the difference between the 25LC080C and 25LC080D page sizes?

The 25LC080C has a 16-byte page size, allowing up to 16 bytes to be written before a write cycle is necessary. The 25LC080D has a 32-byte page size, supporting up to 32 bytes per page write.