3.18.2 mikroBUS™ Interface

The SAM9X75 cHybrid hosts two mikroBUS sockets, J4 and J5. The mikroBUS standard defines the main board sockets and add-on boards used for interfacing the microprocessor with integrated modules that have a proprietary pin configuration. For details, refer to the mikroBUS web page.

The following figure shows the mikroBUS connector 1 interface.

Figure 3-18. mikroBUS 1 Interface

The following table shows the mikroBUS connector 1 signal descriptions.

Table 3-6. mikroBUS Connector 1 Signal Description
Pin No	PIO	Signal Name	Signal Description
1	PA31	MBUS_1_AN_PA31	Analog
2	NRST or PA17	NRST or NRST_PA17	Reset
3	PC24	MBUS_1_SPI_NPCS_PC24	SPI Chip Select
4	PC26	MBUS_1_SPI_SCK_PC26	SPI clock
5	PC23	MBUS_1_SPI_MISO_PC23	SPI MISO
6	PC22	MBUS_1_SPI_MOSI_PC22	SPI MOSI
7	–	VDD_3V3	3.3V
8	–	GND	GND
9	–	GND	GND
10	–	5V_MAIN	5V
11	PC0	MBUS_1_I²C_DATA_PC0	TWI data
12	PC1	MBUS_1_I²C_CLK_PC1	TWI clock
13	PA28	MBUS_1_TX_PA28	UART transmit
14	PA29	MBUS_1_RX_PA29	UART receive
15	PB18	MBUS_1_INT_PB18	Interrupt
16	PC19	MBUS_1_PWM_PC19	Pulse width modulated

The following figure shows the mikroBUS connector 2 interface.

Figure 3-19. mikroBUS 2 Interface

The following table shows the mikroBUS connector 2 signal descriptions.

Table 3-7. mikroBUS 2 Connector Signal Description
Pin No	PIO	Signal Name	Signal Description
1	PA30	MBUS_2_AN_PA30	Analog
2	NRST or PB3	NRST or NRST_PB3	Reset
3	PA12	MBUS_2_SPI_NPCS_PA12	SPI Chip Select
4	PA11	MBUS_2_SPI_SCK_PA11	SPI clock
5	PA9	MBUS_2_SPI_MISO_PA9	SPI MISO
6	PA10	MBUS_2_SPI_MOSI_PA10	SPI MOSI
7	–	VDD_3V3	3.3V
8	–	GND	GND
9	–	GND	GND
10	–	5V_MAIN	5V
11	PB15	MBUS_2_I²C_DATA_PB15	TWI data
12	PB16	MBUS_2_I²C_CLK_PB16	TWI clock
13	PA14	MBUS_2_TX_PA14	UART transmit
14	PA13	MBUS_2_RX_PA13	UART receive
15	PB25	MBUS_2_INT_PB25	Interrupt
16	PB14	MBUS_2_PWM_PB14	Pulse width modulated

Note: The mikroBUS connector 2 does not support the CAN interface.