Description:
The
module (MicroSD Card Adapter) is a Micro SD card reader module, through
the file system and the SPI interface driver, MCU to complete the file
system to read and write MicroSD card. Ardu users can directly use the
Ardu IDE comes with an SD card to complete the library card
initialization and read-write
features:
1. Supports Micro SD cards, Micro SDHC card (high speed card)
2 level conversion circuit board that interfaces level for 5V or 3.3V
3 power supply is 4.5V ~ 5.5V, 3.3V voltage regulator circuit board
4 is a standard communication interface SPI interface
5.4 M2 screw positioning holes for easy installation
Parameters:
Power supply voltage VCC: Min: 4.5V
Typical values: 5V
5.5V max.
Current: Min: 0.2mA
Typical: 80mA
200mA max.
Interface level: 3.3 or 5V
Support Card Type: Micro SD card (<= 2G), Mirco SDHC cards (<= 32G)
Size: 42X24X12mm
Weight: 5g
Interface Description:
Interface below Mirco SD card module is shown below:
Control
Interface: A total of six pins (GND, VCC, MISO, MOSI, SCK, CS), GND to
ground, VCC is the power supply, MISO, MOSI, SCK is SPI bus, CS is the
chip select signal pin;
3.3V voltage regulator circuit: LDO regulator output is 3.3V level converter chip, Micro SD card supply;
Level
conversion circuit: Micro SD card into the direction of the signal is
converted to 3.3V, MicroSD card interfaces to control the direction of
the MISO signal is also converted into 3.3V, general AVR microcontroller
system can read the signal;
Micro SD card connector: a self-bomb deck, easy card insertion.
Positioning
holes: 4 M2 screws positioning hole diameter is 2.2mm, the positioning
of the module is easy to install, to achieve inter-module combination;
