25LC512-I/P

Overview

The Microchip Technology 25LC512-I/P 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 20 MHz at higher voltages. The device features a 128-byte page size, 1 million erase/write cycle endurance, and data retention exceeding 200 years. Designed for industrial applications, it functions between -40°C and +85°C and is housed in an 8-lead PDIP package.

Feature Summary

• Supports byte-level and page-level write operations with self-timed erase cycles
• Includes sector write protection allowing selective array locking
• Features built-in power-on/off data protection and write enable latch
• Provides hold functionality to pause serial communication without resetting sequences

Applications

• Microcontroller system data storage
• Configuration parameter retention
• Calibration value storage
• Device identification logging

Procurement Notes

Verify the 'I' suffix confirms the Industrial temperature range (-40°C to +85°C). Confirm the '/P' designation indicates the 8-lead PDIP through-hole package. Ensure the specific revision matches project requirements as datasheets may update. Cross-reference the manufacturer part number directly with official Microchip documentation to avoid counterfeit components.

Selection Notes

Select this component when SPI bus compatibility is required alongside non-volatile data retention. The 512 Kbit capacity suits moderate storage needs. Verify that the host microcontroller supports the necessary SPI modes. Consider the 128-byte page size for write efficiency. Ensure operating voltage aligns with the 2.5V to 5.5V specification.

Part Context

This part belongs to the 25LC512 series of serial EEPROMs from Microchip Technology. The series offers various package options including SOIC and DFN-S. The 'I' variant specifically targets industrial environments, distinguishing it from the extended temperature 'E' version. It shares architectural similarities with other 25-series devices but differs in memory density.

Replacement Considerations

Check for 25LC512-E/SN or 25LC512-E/MF if extended temperature operation is needed. Verify pinout compatibility with alternative SPI EEPROMs before substitution.