3.4.10.1 mikroBUS1 Connector
The first mikroBUS™ socket (J79) implements all mikroBUS features as shown in the schematic below. The reset feature is provided (by default) by the system reset line and can be swapped using resistors R296, R297 and R298.
| Function | mikroBUS Signal | PIO | Pin No | Pin No | PIO | mikroBUS Signal | Function |
|---|---|---|---|---|---|---|---|
|
Analog input |
MBUS0_0.MBUS_AN |
PA31 |
1 |
16 |
PC21 |
MBUS0_0.MBUS_PWM |
PWM |
|
Reset |
MBUS0_0.MBUS_nRST |
PA17 |
2 |
15 |
PB18 |
MBUS0_0.MBUS_INT |
Interrupt |
|
SPI chip select |
MBUS0_0.MBUS_CS |
PC15 |
3 |
14 |
PA29 |
MBUS0_0.MBUS_RX |
UART receive |
|
SPI clock |
MBUS0_0.MBUS_SCK |
PC26 |
4 |
13 |
PA28 |
MBUS0_0.MBUS_TX |
UART transmit |
|
SPI MISO |
MBUS0_0.MBUS_MISO |
PC23 |
5 |
12 |
PC1 |
MBUS0_0.MBUS_TWCK |
TWI clock |
|
SPI MOSI |
MBUS0_0.MBUS_MOSI |
PC22 |
6 |
11 |
PC0 |
MBUS0_0.MBUS_TWD |
TWI data |
|
VCC |
VDD_3V3 |
– |
7 |
10 |
– |
5V_MAIN |
VDD |
|
Ground |
GND |
– |
8 |
9 |
– |
GND |
Ground |