Serial Flash Breakout - Assembled 128Mbit

A serial flash memory breakout board populated with the Winbond W25Q128JV, providing 128 Mbit (16 MB) of non-volatile storage accessible over SPI. It's a straightforward way to add external data storage to microcontroller projects for sensor logs, configuration data, strings, and other information that won't fit in program memory.

The W25Q128JV supports standard SPI, Dual SPI, and Quad SPI interfaces for flexible and fast data transfer. The breakout board uses a standard WSON-8 footprint, and the chip communicates with any SPI-capable microcontroller.

Key Features

• 128 Mbit (16 MB) Storage – Winbond W25Q128JV serial flash memory
• SPI Interface – Supports standard, Dual, and Quad SPI modes
• Pre-Assembled – Flash chip already soldered to the breakout board
• Standard Footprint – WSON-8 (6×5mm) compatible
• Non-Volatile – Data retained without power

Ideal For

• Data logging (sensor readings, error logs)
• Storing strings, images, and assets too large for program memory
• Adding external storage to Arduino, ESP32, and other microcontrollers
• Firmware storage and configuration data

Package Contents

• 1× Serial Flash Breakout with Winbond W25Q128JV (assembled)