Micro SD TF Card Reader Module, SPI and SDIO Mini, 3.3V/5V
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Prices updated: 12 Oct 2026
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About this product
A Micro SD (TF) card reader module that lets a microcontroller read and write files on a microSD card, useful for data logging and storage. It supports SPI mode with four wires and SDIO mode with six wires, and includes a power LED and four fixed mounting holes. It runs at 3.3V or 5V depending on the microcontroller's supply.
Specifications
- Interface
- SPI (4-wire) or SDIO (6-wire)
- Supply voltage
- 3.3V or 5V
- Power indicator
- LED
- Mounting holes
- 4
- Card type
- Micro SD (TF)
Frequently asked questions
How do I wire it to an Arduino?
In SPI mode connect MOSI, MISO, SCK, CS, VCC and GND. CS can be any free digital pin, and the module supply should match your board's logic level.
Is SDIO mode needed for most boards?
No. SPI mode works with most microcontrollers. SDIO mode needs a host with a dedicated SDIO peripheral and the six-wire connection.
