Component Pin Analysis

flux

2:39

Looking for "List the strapping pins or bootstrap pins for ESP32-S2-MINI-2 / ESP32-S2-MINI-2U, including pin names and package pin numbers if provided." in esp32-s2-mini-2_esp32-s2-mini-2u_datasheet_en.pdf

Looking for "Which pins are input only pins on ESP32-S2-MINI-2 / ESP32-S2-MINI-2U? Include pin names and package pin numbers if provided." in esp32-s2-mini-2_esp32-s2-mini-2u_datasheet_en.pdf

Looking for "Which pins are connected to internal memory on ESP32-S2-MINI-2 / ESP32-S2-MINI-2U, such as SPI flash or PSRAM? Include pin names and package pin numbers if provided, and whether they should not be used." in esp32-s2-mini-2_esp32-s2-mini-2u_datasheet_en.pdf

Looking for "Which USB pins are present on ESP32-S2-MINI-2 / ESP32-S2-MINI-2U? Include pin names and package pin numbers if provided." in esp32-s2-mini-2_esp32-s2-mini-2u_datasheet_en.pdf

Evaluating pin connections.

Clarifying pin functions.

Looking for "In ESP32-S2-MINI-2 / ESP32-S2-MINI-2U datasheet, which module pins are connected to the embedded SPI flash? List the module pin names and numbers, and whether they are reserved or not recommended for other uses." in esp32-s2-mini-2_esp32-s2-mini-2u_datasheet_en.pdf

Looking for "In ESP32-S2-MINI-2 / ESP32-S2-MINI-2U datasheet, find the note about embedded PSRAM and list the affected module pins and pin numbers." in esp32-s2-mini-2_esp32-s2-mini-2u_datasheet_en.pdf

Looking for "In ESP32-S2-MINI-2 / ESP32-S2-MINI-2U datasheet, list the USB signal pins including module pin numbers and pin names such as USB_D+ and USB_D-." in esp32-s2-mini-2_esp32-s2-mini-2u_datasheet_en.pdf

I checked the module datasheet and extracted the pin groups you asked for. Per the recommended workflow, I used targeted datasheet queries by pin category rather than trying to infer from memory or a broad summary
Bootstrap / strapping pins
These are the boot-configuration pins called out in the datasheet:

Table

Pin nameModule pin #Notes
IO04Strapping pin
IO4541Strapping pin
IO4644Strapping pin
The datasheet section on boot configuration says:
  • boot mode uses GPIO0 and GPIO46
  • VDD_SPI voltage uses GPIO45
  • ROM message printing uses GPIO46
Input-only pins
From the extracted pin table, the only explicitly input-only GPIO is:

Table

Pin nameModule pin #Notes
IO4644Type shown as I
Also input-only, but not general-purpose GPIO:

Table

Pin nameModule pin #Notes
EN45Enable input, should not be left floating
Pins connected to internal memory Embedded SPI flash-related pins
These module pins are shown with FSPI flash-interface functions:

Table

Pin nameModule pin #Flash-related function
IO3328FSPIHD
IO3429FSPICS0
IO3531FSPID
IO3632FSPICLK
IO3733FSPIQ
IO3834FSPIWP
Embedded PSRAM-related pin
The datasheet explicitly notes:

Table

Pin nameModule pin #Notes
IO2626Used by embedded PSRAM on ESP32-S2-MINI-2-N4R2 / -2U-N4R2, cannot be used for other purposes
Important nuance:
  • The extracted datasheet text explicitly says IO26 is unavailable on the PSRAM variants.
  • For IO33-IO38, the extracted text shows the flash-related functions, but the returned excerpt did not include an explicit “cannot be used” note for those pins, so I’m not going beyond what was directly returned.
USB pins
USB is present.

Table

Pin nameModule pin #USB function
IO1923USB_D-
IO2024USB_D+
If you want, I can next turn this into a pin-property checklist for your part project, e.g.:
  • Pin Type
  • Section
  • Pin Group
  • Sub-symbol grouping
List selected Zone pins
Need exact pin names
Flag multifunction overlaps
3 days
Sign up to send

To get started, talk to Flux or create a New Document.

Documents

    Documents are markdown text files which describe project goals, capture details, or even simulation outputs.

    Assets

    ESP32-S2-MINI-2-removebg-preview.png

    ESP32-S2-MINI-2-removebg-preview.png

    ESP32-S2-MINI-2-removebg-previewThumbnail
    kicad_mod

    XCVR_ESP32-S2-MINI-1-FS.kicad_mod

    XCVR_ESP32-S2-MINI-1-FSFootprint
    step

    ESP32-S2-MINI-1.step

    3D3D Model

    ESP32-S2-MINI-2

    ESP32-S2-MINI-2 thumbnail
    WiFi 802.11b/g/n Transceiver Module 2.412GHz ~ 2.484GHz PCB Trace Surface Mount #RF #wifi #ESP32S2 #CommonPartsLibrary #MCU #module

    Properties

    Integrated Circuit

    Espressif Systems

    ESP32-S2-MINI-2

    espressif.com/sites/default/files/documentation/esp32-s2-mini-2_esp32-s2-mini-2u_datasheet_en.pdf

    ESP

    creativecommons.org/licenses/by/4.0/

    parametric-v1

    Pricing & Availability

    Distributor

    Qty 1

    Controls