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Polol microSD card reader module

The board allows you to attach cables to the microSD / TF card line. Supply voltage from 2.7 to 3.6 V. Polol 2597

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ID: 234538

3,13€ gross (23% VAT)
2,54€ net

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The board outputs the lines of the microSD card , so it can be connected via SPI l. The module supply voltage and the logic level of the digital lines range from 2.7 to 3.6 V, in order to use the module with 5 V systems it is necessary to use a logic level converter , you can also use a ready module with a built-in stabilizer and converter . The 2.54mm pitch leads allow the module to be placed in the contact plate.


  • MicroSD card reader module
  • Derived SPI signals
  • Leading pitch: 2.54mm
  • Dimensions: 20 x 18 mm

Table of module pins

pin Function
VDD Plus power (2.7 V to 3.6 V for most microSD cards)
CD The card detection line in the slot. This line is high when the card is inserted and low when there is no card in the slot
pin Description pin Description
DI Data input (MOSI) CMD CMD line of the SDIO interface
DOWN Data output (MISO) Dat0 Data0 line of the SDIO interface
SCLK Clock line CLK Clock line
CS Line selection line (the line must be low to allow communication with the card) DAT3 Data3 line of the SDIO interface
- / IRQ Break line DAT1 / IRQ Data1 line of the SDIO interface
Interrupt line
- - DAT2 Data2 line of the SDIO interface


  • Card reader module
  • 7-pin and 4-pin connectors (male straight) for independent soldering

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