Description Boardoza W25Q40CLSNIG Flash Memory Module is a compact SPI flash memory breakout board built around the Winbond W25Q40CLSNIG chip. It provides 4 Mbit (512KB) of non-volatile storage for embedded systems that need external code storage, configuration retention, logging memory, or firmware-related data space. The module supports SPI communication up to 104 MHz and is suitable for microcontroller and single-board computer projects that require a small, fast external flash memory device. Features 4 Mbit flash memory: provides 512KB of non-volatile serial flash storage. Winbond W25Q40CLSNIG chip: based on the official W25Q40CLSNIG SPI flash memory IC. Fast SPI interface: supports SPI communication up to 104 MHz according to the official documentation. Wide input support: supports 3.3V to 5V input for common embedded platforms. Power and I/O indicators: includes indicators for easier bring-up and debugging. Compact board format: 20mm x 20mm breakout board for space-constrained systems. Specifications Product Boardoza W25Q40CLSNIG Flash Memory Module Main IC Winbond W25Q40CLSNIG Function Serial Flash Memory Memory Size 4 Mbit (512KB) Communication Interface SPI SPI Clock Speed Up to 104 MHz Input Voltage 3.3V to 5V Operating Temperature -40 C to +85 C Board Dimensions 20mm x 20mm Shipping Weight 20g Dimensions Applications External SPI flash memory for microcontroller projects. Firmware, configuration, and parameter storage. Data logging for compact embedded devices. Code execution and boot-related memory experiments. SPI memory evaluation and prototyping. Product List 1 Boardoza W25Q40CLSNIG Flash Memory Module Other Content SPI interface: J1 provides the basic power and SPI connections, while J2 exposes additional SPI control pins according to the official documentation. Storage role: suitable for storing code, configuration values, calibration data, logs, and other persistent embedded data. Mechanical note: the official repository provides a STEP file for enclosure and mounting reference. Resources Official GitHub Repository W25Q40CLSNIG Datasheet W25Q40CLSNIG STEP File FAQ What is the Boardoza W25Q40CLSNIG Flash Memory Module used for? It is used as external SPI flash storage for code, configuration data, logs, firmware-related data, and embedded memory expansion. How much memory does it provide? The official documentation lists 4 Mbit, equal to 512KB. Which interface does it use? The module uses SPI communication. What SPI speed is supported? The official documentation lists SPI operation up to 104 MHz. What is the board size? The official board dimensions are 20mm x 20mm.
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