Product Name: SD/TF Card Shield SD Card Shield for Arduino

SD/TF Card Shield SD Card Shield for Arduino
The module (SD Card Shield) is compatible with Arduino Shield interface, the shape of the
SD card reader expansion board, Directly inserted in the Arduino UNO, Arduino MEGA2560 or its compatible motherboard, can add a huge data storage space for your arduino project. Through the file system (the Arduino IDE comes with SD card library) can be easily accomplished within the SD card on the file to read and write operations, Widely used in digital photo album, sensor, long time high frequency acquisition system, TXT reader and applications need to store large amounts of data,
Expansion board features below:
- standard Arduion expansion board interface, shape, compatible with Arduino UNO, Arduino MEGA2560 and compatible motherboards.
- Board level conversion circuit, the interface level can be 5V or 3.3V
- Communication interface is a standard SPI interface, only support SD/TF card SPI mode of communication.
- Support SD/SDHC/Micro SD/Micro SDHC 4 kinds of CARDS, such as the mini card need to cooperate with cheap TF card use.
- Power supply of 4.5 V to 5.5 V, the onboard 3.3 V voltage regulator circuit.
Detailed parameters:

SPI Interface: MOSI, MISO, SCK these three signal pins are quoted from ICSP interface, can be compatible with a variety of Arduino board.
Level conversion circuit: SD card direction of signal is converted into 3.3 V, SD card to the direction of the main control board MISO signal is transformed into 3.3 V, general Arduino motherboard can read the signal;
Regulating circuit: LDO output voltage of 3.3 V level conversion chip, SD card power supply;
Chip select pin: SD card of the CS pin is connected to the Arduino board D4 digital pins; SD card: self bomb deck, convenient card plug can be inserted SD card inserted TF card sets Micro SD Card