Pin
number
Silkscreen Power Net
Portenta HD
Standard Pin
High-Density Pin Interface
31 PWM3 PWM_3 J2-65
32 TX1 SERIAL1_TX J1-33 UART 1 TX
33 PWM4 PWM_4 J2-67
34 GND GND GND
J1-22, J1-31, J1-42, J1-47, J1-54, J2-
24, J2-33, J2-44, J2-57, J2-70
35 I2S WS I2S_WS J1-58 I2S WS
36 PWM5 PWM_5 J2-60
37 PWM6 PWM_6 J2-62
38 I2S SDI I2S_SDI J1-60 I2S SDI
39 GND GND GND
J1-22, J1-31, J1-42, J1-47, J1-54, J2-
24, J2-33, J2-44, J2-57, J2-70
40 I2S SDO I2S_SDO J1-62 I2S SDO
Table 5: Raspberry Pi® 40-Pins Connector (J5) pinout
7.2.2 16-Pin Header (J6)
Pin
number
Silkscreen Power Net
Portenta HD
Standard Pin
High-Density Pin Interface
1 A0 ANALOG_A0 J2-73
2 A1 ANALOG_A1 J2-75
3 A2 ANALOG_A2 J2-77
4 A3 ANALOG_A3 J2-79
5 A4 ANALOG_A4 J2-74
6 A5 ANALOG_A5 J2-76
7 A6 ANALOG_A6 J2-78
8 A7 ANALOG_A7 J2-80
9 PWM7 PWM_7 J2-64
10 PWM8 PWM_8 J2-66
11 LICELL LICELL J2-7
RTC Power
Source
12 PWM4 GPIO_0 J2-46
13 3V3 +3V3_PORTENTA VCC J2-23, J2-34, J2-43, J2-69
14 TX2 SERIAL2_TX J2-26 UART 2 TX
15 GND GND GND
J1-22, J1-31, J1-42, J1-47, J1-54,
J2-24, J2-33, J2-44, J2-57, J2-70
16 RX2 SERIAL2_RX J2-28 UART 2 RX
Table 6: 16-Pin Header (J6) pinout