• FM25W256-GTR 8-SOIC(0.154",3.90mmWidth)
FM25W256-GTR 8-SOIC(0.154",3.90mmWidth)


F-RAM SPI FRAM 256k 3-5V

Quantity Unit Price(USD) Ext. Price
1 $2.355 $2.36
10 $2.163 $21.63
30 $2.044 $61.32
100 $1.697 $169.70
500 $1.641 $820.50
1000 $1.618 $1,618.00


*The price is for reference only.
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  • Part Number : FM25W256-GTR

  • Package/Case : 8-SOIC(0.154",3.90mmWidth)

  • Brands : Infineon Technologies

  • Components Categories : Memory

  • Datesheet : FM25W256-GTR DataSheet (PDF)

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Overview of FM25W256-GTR

The FM25W256-GTR is a serial 256Kbit (32K x 8) FRAM (Ferroelectric Random Access Memory) IC that offers non-volatile data storage with fast read and write operations. It combines the benefits of non-volatile memory with the high-speed read/write performance of RAM, making it ideal for applications requiring frequent read/write cycles and reliable data storage.


(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

  • VSS: Ground
  • VDD: Power Supply
  • CS: Chip Select
  • SI: Serial Input
  • SO: Serial Output
  • SCK: Serial Clock
  • WP: Write Protect
  • VSS: Ground

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the FM25W256-GTR IC for a visual representation.

Key Features

  • 256Kbit Non-Volatile Memory: Provides reliable data storage with 32K x 8 organization.
  • High-Speed Read/Write Operations: Offers fast access times for efficient data transfer.
  • Non-Volatile Data Storage: Retains data even when power is removed, ensuring data integrity.
  • Low Power Consumption: Consumes minimal power during read/write operations, suitable for battery-powered devices.
  • SPI Interface: Utilizes a Serial Peripheral Interface for simple communication with microcontrollers.

Note: For detailed technical specifications, please refer to the FM25W256-GTR datasheet.


  • Data Logging Systems: Ideal for logging data in applications where frequent read/write cycles are required.
  • Industrial Automation: Suitable for use in industrial automation systems for storing critical operating data.
  • Sensor Data Storage: Used in sensor-based systems for storing sensor data and event logs.


The FM25W256-GTR offers non-volatile data storage capabilities with high-speed read/write operations, making it a reliable solution for applications requiring both data retention and fast access times.

Usage Guide

  • Power Supply: Connect VDD (Pin 2) to the power supply voltage and VSS (Pins 1 and 8) to ground.
  • Interface Connections: Connect the SPI interface pins (CS, SI, SO, SCK) to the corresponding microcontroller pins for communication.
  • Write Protection: Use the WP (Pin 7) pin to enable or disable write protection as needed.

Frequently Asked Questions

Q: What is the data retention period of the FM25W256-GTR?
A: The FM25W256-GTR has a data retention period of up to 10 years, ensuring long-term data integrity.

Q: Can the FM25W256-GTR withstand industrial temperature ranges?
A: Yes, the FM25W256-GTR is designed to operate reliably in industrial temperature ranges, making it suitable for industrial applications.


For similar functionalities, consider these alternatives to the FM25W256-GTR:

  • FM24CL64B-G: A 64Kbit FRAM IC with similar non-volatile memory capabilities.
  • MB85RS256TY: A 256Kbit FRAM IC offering high-speed read/write operations and non-volatile data storage.



The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Series F-RAM™ Product Status Active
Programmabe Not Verified Memory Type Non-Volatile
Memory Format FRAM Technology FRAM (Ferroelectric RAM)
Memory Size 256Kbit Memory Organization 32K x 8
Memory Interface SPI Clock Frequency 20 MHz
Voltage - Supply 2.7V ~ 5.5V Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount Package / Case 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC Base Product Number FM25W256

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