25AA512-I/SM

Memory IC Overview

The Microchip Technology 25AA512-I/SM is a 512 Kbit (64K x 8) serial EEPROM utilizing an SPI-compatible interface. It operates within a supply voltage range of 1.8V to 5.5V and supports maximum clock frequencies up to 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. It includes sector write protection, deep power-down capabilities, and operates across industrial temperature ranges from -40°C to +85°C.

Memory IC Feature Summary

• Supports byte, page, sector, and chip erase operations with self-timed cycles
• Includes hardware write-protect pin and software block protection via status register
• Features hold functionality to pause serial communication without resetting sequences
• Provides electronic signature identification and deep power-down mode for low consumption

Memory IC Applications

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

Memory IC Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature range (-40°C to +85°C). Confirm the 'SM' suffix corresponds to the 8-lead SOIJ package type. Ensure the datasheet revision matches the required specifications for voltage and timing characteristics.

Memory IC Selection Notes

Select this component when a 512 Kbit capacity is required with SPI interface compatibility. Consider the 128-byte page size for write efficiency. Evaluate the 20 MHz clock speed capability against system bus requirements. Verify that the 1.8V minimum operating voltage aligns with the target application's power supply constraints.

Memory IC Part Context

This part belongs to the 25AA512 series of serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with other devices in the family but is distinguished by its specific 512 Kbit density and 128-byte page structure. The series offers various package options including PDIP, SOIC, DFN-S, and SOIJ.

Memory IC Replacement Considerations

Cross-reference with other 25AA512 variants such as 25AA512-I/P or 25AA512-I/SN if different packaging is needed. Verify functional equivalence regarding instruction sets and electrical characteristics before substitution.