W25Q40CLSNIG TR

Series:	SpiFlash®
Packaging:	Tape & Reel (TR)
Part Status:	Active
Memory Type:	Non-Volatile
Memory Format:	FLASH
Technology:	FLASH - NOR
Memory Size:	4Mb (512K x 8)
Clock Frequency:	104MHz
Write Cycle Time - Word, Page:	800µs
Memory Interface:	SPI
Voltage - Supply:	2.3 V ~ 3.6 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

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Introduction to W25Q40CLSNIG TR
The W25Q40CLSNIG TR is a serial flash memory device that is manufactured by Winbond. It is a quad-SPI NOR flash memory, meaning it uses the SPI (Serial Peripheral Interface) protocol for communication. The W25Q40CLSNIG TR features 4 Mb (32 Mbit) of space, with built-in error correction. Its top performance has earned it the title of “the world’s fastest NOR flash memory” among other W25Q NOR Flash devices. The W25Q40CLSNIG TR is available in an 8-pin SOIC (Small Outline Integrated Circuit) package and a 5-pin WSON (Wafer Level Chip Scale Package No Interconnect) package.

Application status and usage field of W25Q40CLSNIG TR
The W25Q40CLSNIG TR is widely used in embedded systems and is particularly suitable for applications that require fast read and write times, such as boot-up, code download, and OS upgrades. Other applications include application code stored in memory, small-capacity data logging, buffering, fingerprint security checks, and barcode information storage, among others. The W25Q40CLSNIG TR is commonly used in consumer electronic products, especially in digital cameras, digital video recorders, digital TVs, and USB memory sticks, and in automotive products like airbag and head-up displays. This device is also used as a secondary storage device for general purpose microcontrollers.

Features of W25Q40CLSNIG TR
The W25Q40CLSNIG TR has several features that make it an attractive option for embedded and consumer applications. Its 4 Mb of space provides plenty of room for applications codes, data logging and buffering, and it offers fast read and write times. Additionally, its maximum write speed of 60 MHz and maximum clock frequency of 104 MHz make it well-suited for boot-up, code download, and OS upgrades. Its integrated error correction ensures data is transferred accurately and quickly. Finally, its 8-pin SOIC and 5-pin WSON package provide flexibility when designing products.

Working principle of W25Q40CLSNIG TR
The W25Q40CLSNIG TR is a quad-SPI NOR flash memory device, meaning it uses the SPI (Serial Peripheral Interface) protocol for communication. The basic concept of the SPI protocol is relatively simple. The master device, usually a microcontroller, transmits and receives data from the memory device, sending “Commands” and “Addresses” to read and write “Data” to and from the W25Q40CLSNIG TR. The design of the SPI protocol means that the device can be operated in either one-byte commands or multiple-byte commands.The W25Q40CLSNIG TR has 10 commands that are used to access the device. The commands are broken down into 4 categories; Read, Program, Sector Erase, and Miscellaneous Commands. The Read Commands allow the master device to read data from the W25Q40CLSNIG TR; The Program Commands allow the master device to program (write) data to the W25Q40CLSNIG TR; The Sector Erase Commands allow the master device to erase whole sectors at a time; and the Miscellaneous Commands allow the master device to control settings, such as the write protection, hold (data retention), status, block lock/unlock, and OTP configurations. To write data to the W25Q40CLSNIG TR, the master device must first send an “Erase” Command to erase the target memory location. Once the target memory location is erased, the master device can then send a “Write” Command with the “Data” to be written to the target memory location.The W25Q40CLSNIG TR can be programmed with a single byte at a time, as well as multiple bytes. A “Page Program” command can be used for programming multiple bytes at once, up to 256 bytes in one command. The W25Q40CLSNIG TR also features Error Correction to ensure data is transferred accurately. The W25Q40CLSNIG TR is capable of detecting errors in data during a read operation and automatically correcting it. This makes it ideal for applications that require reliable, fast data transfer.Conclusion
The W25Q40CLSNIG TR is an ideal memory device for embedded systems and consumer electronic products, providing plenty of memory space and fast read and write times. Its built-in error correction ensures data is transferred accurately and quickly and its 8-pin SOIC and 5-pin WSON package provide flexibility when designing products. The W25Q40CLSNIG’s wide range of commands, including Read and Program, makes it suitable for applications that require fast read and write times, such as boot-up, code download, and OS upgrades, as well as application code storage, small-capacity data logging, buffering, fingerprint security checks, and barcode information storage.

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