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Is there an SDA pin on the RFID Module?

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Is there an SDA pin on the RFID Module?

(a) Yes

(b) No

This question was posed to me in my homework.

This interesting question is from RFID Module topic in chapter Interfacing of Sensors, Actuators, and Other Modules of Arduino

1 Answer

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Best answer
The correct choice is (a) Yes

Best explanation: The RFID Module has an SDA/SS/Rx Pin which, when the SPI Interface is enabled acts as a signal pin, when the I2C Interface is enabled acts as a Serial Data Pin, and in case of UART Mode Activation acts as a Serial Data Input pin.

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