3.18.4 GPIO Interface

The SAM9X75 cHybrid features a 30-pin connector (J6) for free use.

The following figure shows the GPIO 30-pin connector interface.

Figure 3-20. GPIO 30-Pin Connector Interface

The following table shows the GPIO 30-pin connector signal descriptions.

Table 3-9. GPIO 30-pin Connector Signal Description
Pin No	PIO	Signal Name	Signal Description
1	–	VDD_3V3	3.3V
2	–	5V_MAIN	5V
3	–	VDD_3V3	3.3V
4	–	5V_MAIN	5V
5	PC16	GPIO_I²C_DATA_PC16	TWI data
6	PC17	GPIO_I²C_CLK_PC17	TWI clock
7	PA15	GPIO_RXD_PA15	UART receive
8	PA16	GPIO_TXD_PA16	UART transmit
9	PA25	GPIO_AD1_PA25	ADC pin
10	PA24	GPIO_AD0_PA24	ADC pin
11	PA10	GPIO_SPI_MOSI_PA10	SPI MOSI
12	PB6	GPIO_I/O_PB6	General purpose I/O
13	PA9	GPIO_SPI_MISO_PA9	SPI MISO
14	PD5	GPIO_SPI_NPCS1_PD5	SPI Chip Select
15	PB8	GPIO_I/O_PB8	General purpose I/O
16	PA11	GPIO_SPI_SCK_PA11	SPI clock
17	PA18	GPIO_CLASSD_L0_PA18	Audio
18	PA19	GPIO_CLASSD_L1_PA19	Audio
19	PB10	GPIO_I/O_PB10	General purpose I/O
20	PB12	GPIO_I/O_PB12	General purpose I/O
21	PC9	GPIO_I/O_PC9	General purpose I/O
22	PC31	GPIO_I/O_PC31	General purpose I/O
23	PB26	GPIO_I/O_PB26	General purpose I/O
24	PC25	GPIO_I/O_PC25	General purpose I/O
25	PB11	GPIO_I/O_PB11	General purpose I/O
26	PC30	GPIO_I/O_PC30	General purpose I/O
27	–	GND	GND
28	–	GND	GND
29	–	GND	GND
30	–	GND	GND