MikroBUS (MIKROE) is a standard 16-pin (2×8) socket for Click expansion boards providing SPI, I2C, UART, PWM, interrupt, analog, reset, and power pins for a huge ecosystem of sensor and communication modules.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | AN | Analog input | ADC |
| 2 | RST | Reset output | I/O |
| 3 | CS | SPI chip select | BUS |
| 4 | SCK | SPI clock | BUS |
| 5 | MISO | SPI MISO | BUS |
| 6 | MOSI | SPI MOSI | BUS |
| 7 | 3V3 | 3.3V supply | PWR |
| 8 | GND | Ground | GND |
| 9 | PWM | PWM output | I/O |
| 10 | INT | Interrupt input | I/O |
| 11 | RX | UART receive | BUS |
| 12 | TX | UART transmit | BUS |
| 13 | SCL | I2C clock | BUS |
| 14 | SDA | I2C data | BUS |
| 15 | 5V | 5V supply | PWR |
| 16 | GND | Ground | GND |