The Micro SD Card Breakout Board is designed for connecting micro SD memory cards to 3.3V microcontrollers for data storage and retrieval. It supports both SPI and SDIO communication modes, allowing flexibility between simple wiring using SPI or higher speed data transfer using SDIO where supported.
This board is suitable for applications such as data logging, file storage, audio playback, image storage, and configuration files in embedded systems. It is intended for use with 3.3V power and logic only and does not include level shifting for 5V systems.
Key Features
Supports Micro SD and Micro SDHC cards
Dual interface support SPI and SDIO
SDIO mode supports faster data transfer than SPI
Designed for 3.3V power and logic only
Direct Micro SD card socket
Simple breakout layout for breadboard or wiring
Compact PCB design
Technical Specifications
| Parameter | Specification |
|---|
| Supported Cards | Micro SD, Micro SDHC |
| Communication Interface | SPI or SDIO |
| Operating Voltage | 3.3V only |
| Logic Level | 3.3V |
| Level Shifting | Not included |
| SDIO Data Lines | Up to 4 bit SDIO |
| Mounting Type | Through hole header |
| Board Use | Breadboard or wired installation |
How to Use
Power the board using a regulated 3.3V supply
Connect SPI pins for standard operation or SDIO pins for high speed operation
Ensure the host microcontroller supports SDIO before using that mode
Use compatible software libraries for SPI or SDIO access
Insert a Micro SD card before powering the system
This board must not be connected directly to 5V logic or power sources.
Applications
Package Includes
Micro SD card is not included.
Why Choose This Module
This Micro SD breakout board offers flexibility between SPI simplicity and SDIO performance while remaining compact and easy to integrate. It is ideal for 3.3V embedded systems that require reliable removable storage with optional high speed data access.
Add removable storage to your next embedded project with this Micro SD SPI and SDIO com
