W25Q32 4MB SPI Flash Storage Module
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Prices updated: 12 Oct 2026
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About this product
A flash memory module built around the Winbond W25Q32 chip, providing 4 MB of non-volatile storage over an SPI interface. Data is kept when the microcontroller loses power, which makes it useful for data logging, lookup tables and saved settings. It operates from 2.7V to 3.6V.
Specifications
- Capacity
- 32 Mbit (4 MB)
- Interface
- SPI
- Clock frequency
- Up to 104 MHz
- Operating voltage
- 2.7 V - 3.6 V
- Size
- 14 x 15 mm
Frequently asked questions
Can I connect it directly to a 5V Arduino Uno?
Not directly. The maximum voltage is 3.6V and 5V can damage the chip. Use a 3.3V board such as ESP32, or add level shifting on the SPI lines and power the module from a 3.3V source.
Which pins does it need?
It uses the microcontroller's SPI bus (MOSI, MISO and SCK) plus one digital pin for chip select, along with power and ground.
