Adafruit
QSPI DIP Breakout Board - W25Q128 128Mbit 16MB
· MPN: ADA5634
This breakout makes it easier to prototype with external QSPI flash memory, as used by many modern microcontrollers such as RP2040, ESP32, RT10xx and STM32 s...
This breakout makes it easier to prototype with external QSPI flash memory, as used by many modern microcontrollers such as RP2040, ESP32, RT10xx and STM32 series devices. It carries a W25Q128JVSSIQ flash chip, giving you 128 Megabits / 16 Megabytes of extra storage for code and resources.
The board converts the wide 8-SOIC package into a breadboard-friendly 0.3" wide DIP format, making it handy for testing different flash sizes or adding storage to a project. It runs on 3.3V power and logic only.
The Quad Enable bit is permanently set in the chip’s status register, so it is ready for QSPI mode out of the box. If you use it in SPI mode, the hold and write protect pins do not do anything, so connect them to 3.3V.
For software, the Adafruit_SPIFlash library can be used with Arduino, and CircuitPython support is available via a TOML definition file for board definitions. A bit of header is included for soldering into the board so it can plug into a breadboard or replace an existing socketed SPI flash DIP chip.
Specifications:
- Flash chip: W25Q128JVSSIQ
- Memory capacity: 128-Megabit / 16 Mega-byte
- Power and logic: 3.3V
- Package conversion: wide 8-SOIC packages to 0.3" wide DIP
- Product Dimensions: 11.2mm x 10.2mm x 3.5mm / 0.4" x 0.4" x 0.1"
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- CircuitPython
- A beginner-friendly version of Python designed to run directly on microcontroller boards. If a product supports CircuitPython, you can often program it by copying code files onto the board rather than setting up a more complex toolchain.
- ESP32
- ESP32 is a family of microcontroller modules with built-in wireless features such as Bluetooth and WiFi. Knowing this product uses an ESP32-based module helps explain how it provides wireless serial communication and firmware update features.
- Flash memory
- Non-volatile memory that keeps stored data even when power is removed. In this sensor, it matters because enrolled fingerprint templates can remain saved after the project is turned off.
- RP2040
- A microcontroller chip used on many maker boards, with enough speed and flexible I/O for some camera and display projects. Compatibility with RP2040 matters because camera modules often need many pins and careful timing to read image data successfully.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
- STM32
- STM32 is a family of microcontroller chips commonly used in embedded electronics. Knowing a product uses an STM32 can help when looking at firmware updates, pin connections, or low-level serial control options.
Supplier page — adafruit.com
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