Adafruit SPI FLASH Breakout - W25Q64 - 64 MBit / 8 MByte

Sometimes you need a little extra storage for your microcontroller projects: for files, images, fonts, audio clips, etc. If you need lots of space, like in the gigabytes, we always recommend an SD card because you can easily plug it into a computer to edit files. But sometimes you don't need whole gigabytes; you just need a megabyte or two, with the lower cost and power usage that comes with it. That's when we recommend an Adafruit SPI FLASH Breakout such as this one that is fitted with a W25Q64 - 64 Mbit / 8 MByte chip.

Compared to our QSPI breakouts, this one is single-channel SPI only, but it comes with level shifting so it can be used safely with 3V or 5V power and logic. Since the chip is pre-wired into single channel "SPI" mode with level shifters, you can use it with 3V or 5V logic easily. The board also includes a 3.3V regulator and a pullup on CS.

The chips come blank and do not have a wear-leveling subsystem. You can address them as a flat memory space or format them with a filesystem like littleFS or FAT. It is great for use with data-logging or storage needs where you are okay managing the memory yourself, or if you are adding external memory to an older chip that needs 5V compatibility.

In Arduino, you can use the Adafruit_SPIFlash library to interface with this chip. It comes with header pins that can be soldered in to plug into a breadboard if desired.

• Storage Capacity: 64 Mbit / 8 MByte
• Level shifting for 3V and 5V logic compatibility
• Includes 3.3V regulator and pullup on chip select (CS)
• Single-channel SPI communication
• Come blank without wear-leveling subsystem
• Compatible with Adafruit_SPIFlash Arduino library
• Compact breakout board: 20.3mm x 17.7mm x 3.5mm
• Lightweight: 1.4g

This breakout board is ideal for adding additional SPI flash storage to your projects with easy 3V and 5V compatibility.