Some resources to help you getting started with STM32 programming.
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The module (MicroSD Card Adapter) is a Micro SD card reader module, and the SPI interface via the file system driver, microcontroller system to complete the MicroSD card read and write files. Arduino users can directly use the Arduino IDE comes with an SD card to complete the library card initialization and read-write.
A total of six pins (GND, VCC, MISO, MOSI, SCK, CS), GND to ground, VCC is the power supply, MISO, MOSI, SCK is the SPI bus, CS is the chip select signal pin.
3.3V regulator circuit:
LDO regulator output 3.3V as level converter chip, Micro SD card supply.
Level conversion circuit:
Micro SD card into the direction of signals into 3.3V, MicroSD card toward the direction of the control interface MISO signal is also converted to 3.3V, general AVR microcontroller system can read the signal
Micro SD card connector:
Since the bomb deck for easy card insertion and removal.
4 M2 screws positioning hole diameter of 2.2mm, the module is easy to install positioning, to achieve inter-module combination