30-pin Header

The 30-pin header is a 2 x 15 row of 2.54 mm pins along the same edge of the board as the U.2 connector. It carries GPIO, I²C, I²S, SPI, CAN, ADC, PWM and USB 2.0 signals, and 5 V and 3.3 V supply outputs. The pin table below lists what each pin carries.

Figure 1. The 30-pin header and its pin 1

Electrical Limits

warning

• Signal pins are 3.3 V. Do not connect 5 V logic directly.
• The ADC inputs, SARADC_VIN6 (pin 26) and SARADC_VIN7 (pin 24), accept at most 1.8 V.
• The I2C5 lines have no pull-up resistors on the board. Add external pull-ups sized for the number of devices and the bus speed.
• The 5 V output (pin 1) and the 3.3 V output (pin 30) are each fused at 500 mA.

Pin Assignments

Pin#	PinName	PinType	Input/Output	Signal Description
1	VCC_5V0	Power	Output	Power supply for USB, 5 V output MAX 500 mA
2	GND	Power	NA	Power and signal reference ground
3	USB20_HOST0_DM	LVDS	BI	USB20 HOST Port0 Data Minus
4	I2S2_SDI_M1	signal	Input	I2S2 data input
5	USB20_HOST0_DP	LVDS	BI	USB20 HOST Port0 Data Plus
6	I2S2_SDO_M1	signal	Output	I2S2 data output
7	GND	Power	NA	Power and signal reference ground
8	I2S2_MCLK_M1	signal	Output	I2S2 Master clock
9	I2C5_SDA_M3	signal	BI	I2C5 Bus data
10	I2S2_SCLK_M1	signal	BI	I2S2 serial clock or BCLK
11	I2C5_SCL_M3	signal	Output	I2C5 Bus clock
12	I2S2_LRCK_M1	signal	BI	I2S2 Left/Right channel clock
13	GND	Power	NA	Power and signal reference ground
14	GND	Power	NA	Power and signal reference ground
15	SPI4_MISO_M2	signal	Input	SPI4 Master input, Slave output
16	CAN2_RX	signal	Input	CAN2 receive data
17	SPI4_MOSI_M2	signal	Output	SPI4 Master output, Slave input
18	CAN2_TX	signal	Output	CAN2 transmit data
19	SPI4_CLK_M2	signal	Output	SPI4 clock
20	GND	Power	NA	Power and signal reference ground
21	SPI4_CS0_M2	signal	Output	SPI4 Chip Select 0
22	GPIO0_B0	signal	BI	GPIO bank 0 port B0
23	GPIO1_A4	signal	BI	GPIO bank 1 port A4
24	SARADC_VIN7	Analog	Input	SAR ADC Channel 7 input
25	GND	Power	NA	Power and signal reference ground
26	SARADC_VIN6	Analog	Input	SAR ADC Channel 6 input
27	PWM14	signal	BI	Pulse Width Modulation 14 input or output
28	GND	Power	NA	Power and signal reference ground
29	PWM15	signal	BI	Pulse Width Modulation 15 input or output
30	VCC_3V3_S0	Power	Output	Power supply for peripheral, 3.3 V output MAX 500 mA