3.5.2 mikroBUS Socket
The AVR-BLE board features a mikroBUS socket for expanding the functionality of the development board using MikroElektronika Click Boards and other mikroBUS add-on boards. The socket is populated with two 1x8 2.54 mm pitch female headers and is ready to mount add-on boards.
| mikroBUS Socket Pin | ATmega3208 Pin | Function | Shared Functionality |
|---|---|---|---|
| AN | PD7 | ADC AIN7 | — |
| RST | PD5 | GPIO | — |
| CS | PA7 | SPI0 CS | — |
| SCK | PA6 | SPI0 SCK | SST25PF040CT |
| MISO | PA5 | SPI0 MISO | SST25PF040CT |
| MOSI | PA4 | SPI0 MOSI | SST25PF040CT |
| +3.3V | VDD | VCC_TARGET | — |
| GND | GND | Ground | — |
| PWM | PD1 | TCA0 WO1 | — |
| INT | PD6 | GPIO | — |
| RX | PC1 | UART1 RX | — |
| TX | PC0 | UART1 TX | — |
| SCL | PA3 | TWI0 SCL | MCP9844, BMA253 and ATECC608A |
| SDA | PA2 | TWI0 SDA | MCP9844, BMA253 and ATECC608A |
| +5V | — | VBUS | — |
| GND | GND | Ground | — |
Info: VBUS is
powered from USB. Consequently, +5V will not be available while the board is powered from a
battery.
Info: VCC_TARGET will have the battery voltage when the board is
powered from a battery, which can be less that +3.3V.