BeagleBone Black P8 expansion header is a 46-pin 2×23 2.54mm pitch connector providing GPIO, PWM, timer, ADC, UART, SPI, I2C, and LCD data signals from the AM335x processor for cape expansion boards.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | GND | Ground | GND |
| 2 | GND | Ground | GND |
| 3 | GPIO1_6 | GPIO 38 | I/O |
| 4 | GPIO1_7 | GPIO 39 | I/O |
| 5 | GPIO1_2 | GPIO 34 | I/O |
| 6 | GPIO1_3 | GPIO 35 | I/O |
| 7 | TIMER4 | Timer 4 | I/O |
| 8 | TIMER7 | Timer 7 | I/O |
| 9 | TIMER5 | Timer 5 | I/O |
| 10 | TIMER6 | Timer 6 | I/O |
| 11 | GPIO1_13 | GPIO 45 | I/O |
| 12 | GPIO1_12 | GPIO 44 | I/O |
| 13 | EHRPWM2B | PWM | I/O |
| 14 | GPIO0_26 | GPIO 26 | I/O |
| 15 | GPIO1_15 | GPIO 47 | I/O |
| 16 | GPIO1_14 | GPIO 46 | I/O |
| 45 | GND | Ground | GND |
| 46 | GND | Ground | GND |