Micro SD Card Adapter Module

SD cards or Micro SD cards are widely used in various applications, such as data logging, data visualization, and many more. Micro SD Card Adapter modules make it easier for us to access these SD cards with ease. The Micro SD Card Adapter module is an easy-to-use module with an SPI interface and an on-board 3.3V voltage regulator to provide proper supply to the SD card.

Features and Specifications of Micro SD Card Adapter Module

This section mentions some of the features and specifications of the Micro SD Card Adapter Module.

1. Operating Voltage: 4.5V - 5.5V DC
2. Current Requirement: 0.2-200 mA
3. 3.3 V on-board Voltage Regulator
4. Supports FAT file system
5. Supports micro SD up to 2GB
6. Supports Micro SDHC up to 32GB

Pin Configuration of Micro SD Card Adapter Module

The module contains 6 pins for power and communicating with the controller. The table below describes the pin type and role of each pin on the module.

Connecting Micro SD Card Adapter Module to an MCU/MPU

A Micro SD Card adapter module can be easily connected to an MCU/MPU. Since the module communicates via the SPI protocol, we need to connect the MISO, MOSI, SCK, and CS of the module to the MCU’s.

The image can be seen as a reference and the connections can be made based upon that. Along with the SD card holder, the module has a 3.3V voltage regulator, along with a 74LVC125A Level shifter IC.

Alternatives for Micro SD Card Adapter Module

MOD100717 Micro SD card module, Mini Micro SD Card Reader Module

Applications of Micro SD Card Adapter Module

Here are some of the applications of the Micro SD Card Adapter Module.

1. Data loggers
2. Audio, Video storage, and Visualization
3. Expandable memory

2D Model of Micro SD Card Adapter Module

Below is the 2D model of the SD card adapter module along with its dimensions in millimeters. This information can be used to create custom footprints of the module and can be used for PCB Designing and CAD modelling.