25LC010AT-E/MS

Overview

The Microchip Technology 25LC010AT-E/MS 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 via an SPI-compatible serial bus. The device features a write page mode allowing up to 16 bytes per cycle, with self-timed erase and write cycles completing in a maximum of 5 ms. It is housed in an 8-lead MSOP package and is rated for an extended industrial temperature range from -40°C to +125°C.

Feature Summary

• Supports sequential read operations and page write modes with automatic address pointer incrementation.
• Includes built-in hardware write protection mechanisms such as a write enable latch and dedicated write-protect pin.
• Features a hold input that allows suspension of serial communication without resetting the current sequence.

Applications

• Configuration data storage in microcontroller systems
• Calibration parameter persistence
• Log buffering in embedded devices

Procurement Notes

Verify the specific suffix 'E' confirms the automotive-grade temperature rating (-40°C to +125°C) and the 'T' indicates tape-and-reel packaging. Confirm the 'MS' designation matches the required 8-lead MSOP footprint. Ensure the component meets RoHS compliance standards for your assembly process.

Selection Notes

Select this part when a 1 Kbit capacity is sufficient and operation above 2.5V is required. The 'E' grade is necessary for environments exceeding standard industrial limits. Compare against the 25AA010A if lower voltage support down to 1.8V is needed instead of the 2.5V minimum specified here.

Part Context

This component belongs to the 25LC010A family of 1 Kbit SPI EEPROMs. It shares architectural similarities with other members like the 25LC020 or 25LC040 but offers a smaller 128-byte array. The device utilizes a standard 8-bit instruction register and interfaces directly with popular microcontroller families through its serial peripheral interface.

Replacement Considerations

The 25LC010AT-I/MS serves as a direct functional substitute with identical specifications except for a reduced operating temperature range of -40°C to +85°C. Verify thermal requirements before swapping between the 'I' and 'E' grades.

FAQ

How does the HOLD pin function during active communication?

The HOLD pin suspends transmission to the device while maintaining the internal state. Transitions on SI, SCK, and SO are ignored until HOLD is released, allowing the host to service higher priority interrupts without retransmitting the sequence.

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

If a page write attempts to cross a boundary, the data wraps around to the beginning of the current page, overwriting existing data at those locations rather than proceeding to the next page.