# Nucleo-F401RE GPIO

## Pin Aliases

| alias       | pin |
|-------------|-----|
| red_led     | 13  |
| user_led    | 13  |
| ld2         | 13  |
| builtin_led | 13  |

## GPIO

Pin 13: User LED (LD2)
- Output, active high
- PA5 on STM32F401