7Semi 128Mbit Serial Flash Memory SPI Breakout - W25Q128JWSIQ

The 7Semi 128Mbit Serial Flash Memory SPI Breakout (W25Q128JWSIQ) is a compact breakout board based on Winbond’s 128-Mbit (16MB) serial NOR flash memory. It provides high-speed SPI, Dual-SPI, and Quad-SPI interfaces for easy integration with microcontrollers and embedded systems. Ideal for data logging, firmware storage, and memory expansion in IoT and embedded applications.

Technical Specification:

• Memory Capacity: 128 Mbit (16 MB)
• Flash Type: Serial NOR Flash
• Chip Used: Winbond W25Q128JWSIQ
• Interface: SPI / Dual SPI / Quad SPI
• Maximum Clock Speed: 133 MHz
• Erase Sizes: 4 KB sector, 32 KB block, 64 KB block, full chip erase
• Operating Voltage: 1.7 V to 1.95 V
• Data Retention: 20+ years
• Endurance: 100,000 program/erase cycles
• IC Package: 8-pin SOIC (mounted on breakout board)
• Header Pitch: 2.54 mm for easy prototyping

Features:

• 16 MB high-capacity non-volatile memory
• Supports Single, Dual, and Quad SPI modes
• Breakout board eliminates need for fine-pitch soldering
• Fast read/write performance suitable for large data handling
• Small sector erase ideal for logging and parameter storage
• Low power consumption
• Compatible with Arduino, ESP8266, ESP32, STM32, Raspberry Pi Pico, and many more

Applications:

• Firmware and bootloader storage
• Data logging for IoT devices and sensors
• External storage for microcontrollers
• Storing configuration files, audio assets, or lookup tables
• Prototyping and embedded development requiring additional flash memory