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Boardoza W25Q40CLSNIG Serial Flash Memory Breakout Board
The Boardoza W25Q40CLSNIG is a compact and high-performance SPI Flash memory breakout board built around the Winbond W25Q40CLSNIG chip. Offering 4 megabits (512 kilobytes) of non-volatile storage, it is ideal for embedded applications requiring code execution, configuration retention, or data logging. With support for SPI communication up to 104 MHz, this module enables fast and reliable read/write operations, even in timing-critical environments. The board is equipped with power and I/O indicators and is fully compatible with microcontrollers and single-board computers that require external SPI-based flash memory.
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Product Details
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Key Features
- 4M-bit / 512KB Serial Flash Memory: Ideal for code or data storage in embedded systems.
- Fast SPI Interface: Operates at up to 104 MHz clock speed.
- Flexible Erase Architecture: Supports uniform 4KB sectors, and larger 32KB / 64KB block erase operations.
- Durable & Reliable: Over 100,000 write/erase cycles with >20 years of data retention.
- Low Power Consumption: Optimized for battery-powered systems.
- Power LED Indicator (D1): Helps monitor power state visually.
Technical Specifications
- Model
- Winbond W25Q40CLSNIG
- Input Voltage
- 3.3V – 5V
- Functions
- Serial Flash Memory
- Size
- 4 Mbit (512KB)
- Speed
- Up to 104 MHz
- Interface
- SPI
- Endurance
- 100,000+ write/erase cycles
- Retention
- > 20 years
- Operating Temperature
- -40°C ~ +85°C
- Board Dimensions
- 20mm x 20mm
Board Pinout
( J1 ) Power and Basic SPI Interface
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | 5V | Positive Power Supply |
| 2 | CLK | Serial Clock Input (SCK) |
| 3 | DI | Data Input (IO0 / MOSI) |
| 4 | GND | Ground |
( J2 ) Additional SPI Control Pins
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | CS | Chip Select (Active Low) |
| 2 | DO | Data Output (IO1 / MISO) |
| 3 | WP | Write Protect Input (IO2) |
| 4 | HOLD | Hold Input (IO3) |
Datasheet
Download (PDF)Support
For technical questions, documentation and issue reports, use the GitHub repository or write to us directly.