GND (Ground pins): There is a total of 5 ground pins on the board. UART pins on board: D0(TX), D1(RX) Other pins: It also represents the successful flow of data from the computer to the board. The TXD is used for transmitting the data, and RXD is used for receiving the data during serial communication. UART Pins: TXD and RXD pins are used for serial communication. This allows us to have multiple SPI peripheral devices sharing the same MISO, MOSI, and CLK lines.Įxternal Interrupts (2 and 3)- These pins can be used to trigger an external interrupt in the following conditions: a low value, a rising or falling edge, or a change in value. When its value HIGH, it ignores the master. When a device’s Slave Select pin value is LOW, it can communicate with the master. This line is used for sending data to the peripherals.
This data line in the MISO pin is used to receive the data from the Slave.
MISO-It stands for Master Input/ Slave Output.These are the clock pulses, that are used to synchronize the transfer of data. It is used by the microcontrollers to communicate with one or more peripheral devices quickly. SPI stands for Serial Peripheral Interface. SPI pins on the board: D13(SCK), D12(MISO), D11(MOSI)
