25LC010A-I/SN

Overview

The Microchip Technology 25LC010A-I/SN is a 1 Kbit (128 x 8) Serial Electrically Erasable Programmable Read-Only Memory (EEPROM). It operates within a supply voltage range of 2.5V to 5.5V and supports a maximum clock frequency of 10 MHz at voltages between 4.5V and 5.5V. The device utilizes an SPI-compatible serial bus for communication, featuring a write page mode capable of handling up to 16 bytes per cycle. Internal write cycles are self-timed with a maximum duration of 5 ms. The component is housed in an 8-lead SOIC package and is rated for industrial temperature operation from -40°C to +85°C.

Feature Summary

• Supports sequential read operations and page write modes with automatic address pointer incrementation.
• Includes built-in hardware write protection via the WP pin and software-configurable block protection levels.
• Features power-on/off data protection circuitry and a write enable latch to prevent inadvertent writes.
• Provides a HOLD input function to pause serial communication without resetting the current sequence.

Applications

• Configuration storage in microcontroller-based systems
• Calibration parameter persistence
• Data logging and event recording

Procurement Notes

Verify that the ordering suffix matches the required specifications. The 'I' designation confirms the industrial temperature range of -40°C to +85°C. The '/SN' suffix indicates the specific 8-lead SOIC package type. Ensure the voltage requirements align with the 2.5V minimum operating limit specified for the LC series. Confirm RoHS compliance status through official manufacturer documentation prior to procurement.

Selection Notes

Select this component when a 1 Kbit non-volatile memory solution is required for applications needing low-power CMOS technology and high reliability. The industrial temperature grade makes it suitable for environments exceeding standard commercial limits. Consider the 10 MHz maximum clock speed for system timing constraints. Verify that the 2.5V minimum supply voltage is compatible with the host system's logic levels before finalizing the design.

Part Context

This part belongs to the 25XX010A family of 1 Kbit SPI EEPROMs manufactured by Microchip Technology. The family includes variants such as the 25AA010A, which differs primarily in its lower 1.8V minimum operating voltage. The 25LC010A specifically targets applications requiring a 2.5V minimum supply while maintaining compatibility with standard 5V logic interfaces.

Replacement Considerations

The 25LC010AT-I/SN serves as a tape-and-reel replacement for the tube-packaged 25LC010A-I/SN. Both parts share identical electrical characteristics and functionality, differing only in packaging format.

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 command. When pulled low while SCK is low, the SI, SCK, and SO pins enter a high-impedance state. Communication resumes when the HOLD pin is brought high while SCK is low.

What happens if a page write crosses a physical page boundary?

If a page write operation attempts to cross a physical page boundary, the internal address counter wraps around to the beginning of the current page. This results in overwriting previously stored data in the first part of the page rather than writing to the next page.