PCB For W25Qxx SPI Flash Memory Module

Description

The UGE SPI NOR Flash Memory Module is a bare PCB designed for standard 3.3V 8-pin SPI NOR Flash memories. The PCB provides a convenient 6-pin interface for connecting the Flash device to an MCU, development board, or other SPI host.

Because the PCB is supplied without components, the user can choose the Flash capacity and manufacturer according to their application.

Hardware design Schematic, pinout, setup instruction, example code:

GitHub Repository – UGE SPI 25Qxx Module

Compatible Flash Examples

• GD25Q32 — 32 Mbit / 4 MB
• GD25Q64 — 64 Mbit / 8 MB
• GD25Q128 — 128 Mbit / 16 MB
• W25Q64 — 64 Mbit / 8 MB
• W25Q128 — 128 Mbit / 16 MB

Important: compatibility depends on the exact Flash variant, package, voltage rating, and pin configuration. The user should verify the datasheet before assembly.

PCB Interface

The standard SPI NOR pin arrangement uses CS#, VCC, GND, SCLK, SI/IO0 and SO/IO1, with WP#/IO2 and HOLD#/RESET#/IO3 occupying the remaining pins