25LC040AT-I/MNY

Overview

The Microchip Technology 25LC040AT-I/MNY is a 4 Kbit (512 x 8) Serial Electrically Erasable Programmable Read-Only Memory (EEPROM). It operates on 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. It includes self-timed erase and write cycles with a maximum duration of 5 ms.

Feature Summary

• Supports sequential read operations and write page mode for efficient data transfer.
• Includes built-in hardware write protection via the WP pin and software block protection settings.
• Features power-on/off data protection circuitry and a write enable latch to prevent inadvertent writes.

Applications

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

Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm the voltage range requirements align with the LC series specifications. Ensure compatibility with the host controller's SPI interface timing constraints before finalizing procurement.

Selection Notes

Select this component when a non-volatile memory solution with low power consumption and high endurance is required. It is suitable for applications needing frequent updates or robust data retention over extended periods. Consider the available package options and operating temperature range to ensure fit within the design constraints.

Part Context

This part belongs to the 25XX040A family of serial EEPROMs from Microchip Technology. The family offers various package types including SOIC, TSSOP, MSOP, DFN, and SOT-23. The 'LC' designation indicates a 2.5V to 5.5V operating voltage range, distinguishing it from the 'AA' series which supports lower voltages down to 1.8V.

Replacement Considerations

Direct substitutes include other parts within the 25LC040A family with different package suffixes, such as 25LC040AT-I/ST or 25LC040AT-I/SN. Cross-family replacements like the 25AA040A require verification of voltage level compatibility.