Overview

The W25Q128 is a 128Mbit (16MB) serial NOR flash memory device with SPI interface, commonly used for external storage in embedded systems.

The module features:

• 128Mbit (16MB) storage capacity
• Standard/Dual/Quad SPI interface
• 104MHz clock frequency
• Supply Voltage: 2.7V-3.6V

Configuration Notes

⚠️ Note: ESPHome does not have native support for external SPI flash as a storage component. This device is typically used at the hardware level for program storage or requires custom components for data storage.

• Requires SPI interface
• Typical SPI pins: CLK, MISO (DO), MOSI (DI), CS
• Operating voltage: 3.3V
• Can be used for storing large amounts of data that don’t fit in internal flash