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3V microcontroller platforms
and is compatible with most of the SCM system
Weight (gm) 20
The PN532 is the most popular NFC chip
it is slim and easy to fit into many project cases with a battery size of 18mm*65mm
Micro SD Card Reader Module 6 Pin light intensity 3V microcontroller platformsMicro SD card with 6 PINS , Micro SDHC card (high speed card) level conversion circuit board which can interface level is 5 V or 3. 3 V communication interface is a standard SPI interface 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 the SPI bus, CS is the signal circuit of the chip signal; 3. 3 V regulator circuit: LDO regulator output 3. 3 V as a level converter
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