PCB Antenna Keep-Out Zone Guide

vasy_skral

vasy_skral

What pins are input only?
4 days

flux

0:17

Considering file search.

On the ESP32-WROOM-32, the input-only GPIOs are:

Input-only pins

GPIONotes
GPIO34Input only
GPIO35Input only
GPIO36Input only
GPIO39Input only
Important restriction
These pins are GPI only:
  • No output capability
  • No internal pull-up
  • No internal pull-down
So if you use them for switches or logic inputs, you need external bias resistors if the signal source does not already provide a defined level.
If you want, I can also list the pins that should be avoided at boot separately from the input-only pins.
Specify the part
Check U1 pins
Use the datasheet
4 days
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    Assets

    kicad_mod

    ESP32-WROOM-32-Footprint_V5.kicad_mod

    ESP32-WROOM-32-Footprint_V5
    ESP32-WROOM-32

    ESP32-WROOM-32

    defaultDefault
    step

    ESP32-WROOM-32-3D.step

    ESP32-WROOM-32-3D3D Model
    ESP32-WROOM-32-removebg-preview.png

    ESP32-WROOM-32-removebg-preview.png

    ESP32-WROOM-32-removebg-previewThumbnail
    kicad_mod

    ESP32-WROOM-32-Footprint_V5-2.kicad_mod

    ESP32-WROOM-32-Footprint_V5-2Footprint

    ESP32-WROOM-32

    ESP32-WROOM-32 thumbnail
    Bluetooth, WiFi Transceiver Module 2.4GHz ~ 2.5GHz - Surface Mount

    Properties

    Integrated Circuit

    Espressif Systems

    ESP32-WROOM-32

    espressif.com/sites/default/files/documentation/esp32-wroom-32_datasheet_en.pdf

    U

    parametric-v1

    Pricing & Availability

    Distributor

    Qty 1

    Controls