SST39VF3202C-70-4I-EKE-T

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SST39VF3202C-70-4I-EKE-T: Memory Application Field and Working Principle

SST39VF3202C-70-4I-EKE-T (SST39) is a 4KB non-volatile memory device that is commonly used for firmware storage in microcontroller-based consumer products. SST39 offers significant performance, cost, and power advantages for consumer electronics designs, including high endurance and fast write performance. This article describes the fields of application and working principle of SST39 memory.

Application field of SST39 Memory

SST39 Memory chips are ideal for consumer products that require reliable non-volatile data storage such as home appliances, automotive systems, and medical devices. Upgrading the firmware on these devices usually requires a programming or device update mechanism. SST39 memory chips are used in an external Flash memory device connected to the microcontroller, which is used to store the firmware images for these devices. Other common applications include secure data storage, secure code storage, secure key storage, and secure configuration data storage.

SST39 memory chips are also used in industrial and embedded systems with the same architectures as consumer products. The main difference is that the operating temperature range is much wider. SST39 memory chips are capable of working in temperatures ranging from -40℃ to +85℃, suitable for industrial and rugged applications.

Working Principle of SST39 Memory

The working principle of SST39 memory is based on Flash memory technology. The memory cells of SST39 are divided into a two-transistor cell (TTC) known as a floating-gate transistor cell, which is composed of two transistors (a tunnel FET and a select FET) with a floating gate between them. Every cell can be added or erased in place by using Fowler-Nordheim tunneling method.

When read or write operation is performed on a cell, a control gate is charged and the value of the cell is read or changed. Unlike a conventional volatile memory, the stored data remains in the memory cell even when the power is off and the data is not lost when there is sudden disruption of power supply.

The SST39 architecture allows for fast and reliable programming, making it an ideal choice for embedded systems, and its memory cells are erasable and reprogrammable, which allows the user to modify and store data within the same memory allocation.

Conclusion

In conclusion, the SST39VF3202C-70-4I-EKE-T is a 4KB non-volatile memory device widely used in consumer products, industrial and embedded systems. It offers high endurance, fast write performance, and reliable programming capabilities. The working principle of SST39 memory is based on Flash memory technology, using a two-transistor cell architecture with a floating gate between them.

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