FM25W256-GTR Integrated Circuits (ICs)

Series:	F-RAM™
Packaging:	Tape & Reel (TR)
Part Status:	Active
Memory Type:	Non-Volatile
Memory Format:	FRAM
Technology:	FRAM (Ferroelectric RAM)
Memory Size:	256Kb (32K x 8)
Clock Frequency:	20MHz
Write Cycle Time - Word, Page:	--
Memory Interface:	SPI
Voltage - Supply:	2.7 V ~ 5.5 V
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 Part Number:	FM25W256

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Introduction

FM25W256-GTR is a memory device used for data storage and retrieval in applications ranging from consumer electronics to automotive. It is a non-volatile-memory based on ferroelectric RAM (F-RAM) technology. F-RAM technology is well known for its high endurance, high-speed read/write capability, low power consumption and small die area. The FM25W256-GTR provides 256Kbit of non-volatile memory and is an ideal solution for applications requiring high data retention, reliability and low power dissipation.

Application Fields of FM25W256-GTR

The FM25W256-GTR can be used in a range of applications such as data logging, setting and storing real-time clock and NAND flash emulation. It is especially suitable for applications where data is constantly changing, such as medical devices and transportation system, due to its fast write/read speed, low power consumption and high endurance. It can also be used in automotive applications, where non-volatile memory is used for power-off data retention, such as engine control, stability check and airbag control.

Working Principle of FM25W256-GTR

The FM25W256-GTR is based on ferroelectric RAM (F-RAM) technology. F-RAM is a type of non-volatile memory that uses a ferroelectric material to charge and store data. The FM25W256-GTR uses a dielectric film to store binary information. This film is composed of a ferroelectric material and silicon dioxide. During read/write cycles, an applied electric field causes the atoms in the material to rotate, causing a dipole moment. This dipole moment is read and written, similar to the way binary data is stored on disk platters in hard drives.The FM25W256-GTR also incorporates Write Protect, a feature designed to protect the memory from accidental erasing/programming during operation. Write Protect prevents inadvertent erasure of the data stored in the memory by restricting all write cycles to specific addresses.

Advantages of FM25W256-GTR

The FM25W256-GTR has many advantages over conventional non-volatile memories. It has a wide operating temperature range of -40℃ to +125℃ and high endurance of up to 10 trillion (1012) read and write cycles. The FM25W256-GTR also features high write speed, with write cycles of up to 5 nanoseconds. Additionally, the FM25W256-GTR has a low power consumption of only 10µA, making it ideal for applications where battery power is a requirement.

Conclusion

The FM25W256-GTR is a non-volatile memory device that is ideal for applications requiring high data retention, reliability, and low power dissipation. It has a wide operating temperature range, high endurance, fast write speed, and low power consumption. The FM25W256-GTR is suitable for applications such as data logging, real-time clock settings, NAND flash emulation, and automotive control systems.

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