25LC512-M/SN

Overview

The Microchip Technology 25LC512-M/SN is a 512 Kbit (64K x 8) serial EEPROM utilizing an SPI-compatible interface. It operates within a voltage range of 2.5V to 5.5V and supports a maximum clock frequency of 10 MHz. The device features a 128-byte page size, 1 million erase/write cycle endurance, and data retention exceeding 200 years. It is housed in an 8-lead SOIC package and supports an extended industrial temperature range from -55°C to +125°C.

Feature Summary

• Supports byte, page, sector, and chip erase operations with self-timed cycles.
• Includes hardware write protection via the WP pin and software block protection bits.
• Features a HOLD input to pause serial communication without resetting the sequence.
• Provides deep power-down mode for minimal current consumption.

Applications

• Data logging in industrial control systems
• Configuration storage for microcontroller-based devices
• Calibration data retention in automotive electronics

Procurement Notes

Verify the specific ordering suffix '-M' confirms the extended temperature range (-55°C to +125°C). Confirm the '-SN' suffix indicates the 8-lead SOIC package type. Ensure compatibility with system voltage levels between 2.5V and 5.5V. Check for RoHS compliance requirements against the datasheet specifications.

Selection Notes

Select this component when an SPI interface is required for non-volatile storage. The 512 Kbit capacity suits applications needing moderate data retention. The extended temperature range makes it suitable for harsh environments. Consider the 128-byte page size for write efficiency. Verify that the 10 MHz clock speed meets system timing constraints.

Part Context

This part belongs to the 25LC512 family of serial EEPROMs from Microchip Technology. It shares functional similarities with other members but differs in package and temperature rating. The 'M' suffix denotes the extended temperature variant, while 'SN' specifies the SOIC package. It complements other memory solutions by offering high endurance and robust data protection features.

Replacement Considerations

Direct substitutes include other 25LC512 variants with different packages or temperature ratings, such as 25LC512-E/SN. Cross-brand replacements require verification of SPI compatibility, voltage ranges, and pin configurations. Ensure any alternative matches the 128-byte page size and write protection mechanisms.