FT25C32A-USR-T

Overview

The FT25C32A-USR-T is a 32-kbit serial EEPROM from Fremont Micro Devices, organized as 4K x 8 bits. It features a 20 MHz SPI interface for high-speed data access. The device operates on a supply voltage range of 1.8V to 5.5V and supports byte-level write operations without requiring sector erasure. It offers 1,000,000 write cycle endurance with a write cycle time of 5ms. Operating temperatures range from -40°C to +85°C, housed in an 8-SOP package.

Feature Summary

• Supports high-speed 20 MHz SPI communication for efficient data transfer
• Enables direct byte-level programming without prior sector erase requirements
• Provides robust non-volatile storage with one million write cycle endurance

Applications

• Data logging systems requiring frequent small data updates
• Configuration storage in embedded microcontroller systems
• Calibration data retention in industrial control devices

Procurement Notes

Verify the specific suffix 'USR' confirms the 8-SOP package and commercial temperature grade. Ensure the SPI interface compatibility matches the host controller's mode settings. Confirm voltage levels align with the 1.8V to 5.5V operating range. Check for any specific ordering suffix variations that might indicate different packaging or temperature ranges.

Selection Notes

Select this component when high-speed SPI access is required alongside byte-write flexibility. It is suitable for applications needing moderate capacity with low power consumption. Consider the 8-SOP footprint for space-constrained designs. Evaluate the 20 MHz clock speed against system timing requirements.

Part Context

This part belongs to the FT25Cxx series of serial EEPROMs from Fremont Micro Devices. The series utilizes a standard SPI interface, distinguishing it from I2C-based counterparts like the FT24Cxx series. It targets applications demanding faster write cycles and higher throughput than traditional serial memories.

Replacement Considerations

Direct substitutes include other 32-kbit SPI EEPROMs with compatible pinouts and voltage ranges. Verify interface protocol compatibility and physical package dimensions before substitution.

FAQ

Does the FT25C32A-USR-T require sector erasure before writing?

No, it supports byte-level writes without the need for prior sector erasure.

What is the maximum SPI clock frequency?

The maximum SPI clock frequency is 20 MHz.