W25Q128JVFIM TR

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Introduction

W25Q128JVFIM is a non-volatile memory IC which integrates a 2Mbits Single-Level Cell (SLC) NAND Flash and a Serial Peripheral Interface (SPI) on one chip. It works in a wide temperature range, unique feature in system design. With fast read and program time and various features, W25Q128JVFIM becomes an ideal solution for applications like boot code storage, firmware upgrades, configuration data and code storage, and so on.

TR application field and working principle

Application Field

W25Q128JVFIM is typically used in communication, consumer, personal computer, automotive, home appliances and so on, especially many kinds of embedded systems. In Boot Code Storage, W25Q128JVFIM is used in firmware upgrades, system configuration, code and data storage and various non-volatile applications.

Working Principle

The major devices in a W25Q128JVFIM are the: control circuit, peripheral circuits, and NAND Flash memory cells. The control circuit is the heart of W25Q128JVFIM, consisting of the control logic, address/data buffer, status registers, input/output multiplexers and clock circuits. The PERC (Peripheral Circuit) is composed of the registers, input/output latches, data decoders and so on. NAND Flash memory cells are the memory array of the W25Q128JVFIM, that is, the matrix array of cells consisting of NAND Flash memory elements.

When W25Q128JVFIM operates, the control circuit writes Command on the Data Bus to NAND Flash memory cells, then receives or transmits data between the host controller and internal registers. The data registers respond to the commands, generate high address, and select corresponding word line. The sense amp circuit amplifies the original weak voltage to get the data of the cell array. Currently, W25Q128JVFIM supports command Toggle and Quad IO.

Conclusion

To sum up, W25Q128JVFIM has a working principle of Command, Peripheral Circuit and NAND Flash memory cells. It is widely used in the applications such as Boot Code Storage, Firmware Upgrades, Configuration Data and Code Storage, etc. W25Q128JVFIM offers an excellent solution for fast read and program time, wide temperature range and various features.

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