3.4.9 mikroBUS Socket

The PIC32CXMTSH-DB hosts a mikroBUS socket (J21). The mikroBUS standard defines the main board sockets and add-on boards used for interfacing the microprocessor with integrated modules featuring a proprietary pin configuration. For details, refer to the mikroBUS documentation on standard specification.

Figure 3-30. mikroBUS Interface Schematic

Table 3-19. mikroBUS Connector Pin Assignment
Pin No	Signal	PIO	Pin No	Signal	PIO
1	AN	PA31	16	PWM	PD16
2	RST	PB26	15	INT	PB25
3	CS	PC6	14	RX	PC17
4	SCK	PC7	13	TX	PC16
5	MISO	PC8	12	SCL	PC20
6	MOSI	PC9	11	SDA	PC21
7	+3.3V	3V3	10	+5V	5V
8	GND	GND	9	GND	GND

Important: R120 and R134 are assembled, and, therefore, the pin PD16 is shared in both Xplained PRO and mikroBUS interfaces.

Warning: The mikroBUS connector is not isolated from mains.

The mikroBUS connector allows for the connection of a wide range of modules for communications, sensoring or power management applications out of the main scope for this board.