SD Card Reader Module (Standard)

1. Power supply: 4.5V - 5.5V, 3.3V voltage regulator circuit board

2. Positioning holes: 4 M2 screws positioning hole diameter of 2.2mm

3. Control Interface: GND, VCC, MISO, MOSI, SCK, CS

4. Support SD Card, SDHC card (high-speed card)

5. The level conversion circuit board that can interface level is 5V or 3.3V

6. Communication interface is a standard interface

7. Control Interface: A total of six pins (GND, VCC, MISO, MOSI, SCK, CS), GND to ground,

8. VCC is the power supply, MISO, MOSI, SCK is the bus, CS is the chip select signal pin.

9. 3.3V regulator circuit: LDO regulator output 3.3V as level converter chip.

10. Level conversion circuit: SD card into the direction of signals into 3.3V, SD card toward the direction of the control interface MISO signal is also converted to 3.3V, general AVR micro controller system can read the signal.

11. SD card connector: yes, since the bomb deck for easy card insertion and removal.

12. Positioning holes: 4 M2 screws positioning hole diameter of 2.2mm, easy to install positioning, to achieve inter-module combination.