Part Review and Datasheet Update

flux

I’ll update the flagged GPIO/power/USB pin descriptions, clean up the project description, then run ERC/DRC and report remaining issues.

flux

Pin descriptions and the project description are updated. I’m running the electrical and layout checks now.

flux

Updated the flagged pin descriptions for GPIO35/GPIO36/GPIO37, GPIO38, USB D+/D−, and power pins, and replaced the noisy part description with a concise Espressif/N16R8V-specific description.
Open items:
  • ERC/DRC returned no matching errors, warnings, or informational checks; the review system reports a fresh review timestamp but no check entries for this part-only project.
Suggested next steps:
  1. Optionally rename 5V0 to 5V for exact Espressif header naming.
  2. Add richer alternate-function descriptions to every GPIO terminal if you want a fully annotated symbol.
  3. Re-run part review checks after publishing or before library reuse.
Rename and annotate pins
Rename 5V pin
Annotate all GPIOs
Verify footprint dimensions
Export review report

Refine this doc
Ask about this doc
ESP32-S3-DEVKITC-1-N16R8V Part Review
Source reviewed
Available part information in Flux
  • Published part: yes
  • Part UID: 65936e93-0135-4552-a932-4b7382938d17
  • Part Type: Integrated Circuits
  • Designator Prefix: U
  • Description field: 7.39mm / RODRIGO / Manufacturer Recommendations / 1.1 / Espressif Systems
  • Schematic terminals: 44 terminal components
  • PCB footprint nodes: 44 pads plus footprint containers/shapes/text
  • BOM items: 0
  • Nets: 0
Key official specs
  • Board: ESP32-S3-DevKitC-1 v1.1 entry-level development board.
  • Wireless: Wi-Fi + Bluetooth Low Energy through ESP32-S3 module.
  • Variant note: N16R8V corresponds to ESP32-S3-WROOM-2 family with 16 MB Octal SPI flash and 8 MB Octal SPI PSRAM; SPI memory voltage is 1.8 V for V-suffix variants.
  • Power options: USB port(s), 5 V pin, or 3V3 pin; Espressif states these supply options are mutually exclusive.
  • USB: USB-to-UART bridge and native ESP32-S3 full-speed USB OTG; native USB supports flashing, USB communication, and JTAG debugging.
  • RGB LED: v1.1 uses GPIO38 for addressable RGB LED; older initial versions used GPIO48.
  • Important N16R8V/WROOM-2 restriction: GPIO35, GPIO36, and GPIO37 are used internally for SPI flash/PSRAM communication and are not available for external use.
Header pinout cross-check
J1 official pinout vs Flux symbol

Table

J1 pinOfficial name/functionFlux terminalResult
13V33V3OK
23V33V3OK
3RST / ENRSTOK
4GPIO4GPIO4OK
5GPIO5GPIO5OK
6GPIO6GPIO6OK
7GPIO7GPIO7OK
8GPIO15GPIO15OK
9GPIO16GPIO16OK
10GPIO17GPIO17OK
11GPIO18GPIO18OK
12GPIO8GPIO8OK
13GPIO3GPIO3OK
14GPIO46GPIO46OK
15GPIO9GPIO9OK
16GPIO10GPIO10OK
17GPIO11GPIO11OK
18GPIO12GPIO12OK
19GPIO13GPIO13OK
20GPIO14GPIO14OK
215V5V0Acceptable naming difference
22GNDGNDOK
J3 official pinout vs Flux symbol

Table

J3 pinOfficial name/functionFlux terminalResult
1GNDGNDOK
2TX / GPIO43U0TXD/GPIO43OK
3RX / GPIO44U0RXD/GPIO44OK
4GPIO1GPIO1OK
5GPIO2GPIO2OK
6MTMS / GPIO42MTMS/GPIO42OK
7MTDI / GPIO41MTDI/GPIO41OK
8MTDO / GPIO40MTDO/GPIO40OK
9MTCK / GPIO39MTCK/GPIO39OK
10GPIO38 / RGB LEDGPIO38Partial: missing RGB LED note
11GPIO37 / internal flash-PSRAM for WROOM-2GPIO37Mismatch/flag: exposed as normal bidirectional; should warn not externally available on N16R8V
12GPIO36 / internal flash-PSRAM for WROOM-2GPIO36Mismatch/flag: exposed as normal bidirectional; should warn not externally available on N16R8V
13GPIO35 / internal flash-PSRAM for WROOM-2GPIO35Mismatch/flag: exposed as normal bidirectional; should warn not externally available on N16R8V
14GPIO0GPIO0OK
15GPIO45GPIO45OK
16GPIO48GPIO48OK
17GPIO47GPIO47OK
18GPIO21GPIO21OK
19GPIO20 / USB_D+USB_D+/GPIO20OK
20GPIO19 / USB_D-USB_D-/GPIO19OK
21GNDGNDOK
22GNDGNDOK
Footprint check
  • Flux footprint contains 44 pad nodes, matching the official two 22-pin header layout.
  • The footprint includes pad nodes for all header terminals plus fab/silk/text shapes.
  • The available layout inspection did not expose numeric pad pitch, pad dimensions, or board outline dimensions, so only pad count/topology was confirmed. Official DevKitC-1 header layout is two 22-pin rows, typically 2.54 mm header pitch.
Pin type / description issues
  • Most GPIO terminals are marked Bi-Directional; this is generally acceptable for GPIO-capable header pins.
  • Power pins are marked Power In. For a development board module used as a component, 3V3 may act as an output when the board is powered from USB/5V or as an input when externally powering 3V3. A more accurate description should mention dual role and mutual exclusivity of supply methods.
  • RST is marked Input; correct.
  • Pin descriptions are largely absent beyond the terminal designator names. Official alternate functions (ADC, touch, UART, JTAG, USB, RGB LED, flash/PSRAM restrictions) are not captured in the Pin Description property.
Mismatches / recommended fixes
  1. Add or update Pin Description for GPIO35, GPIO36, and GPIO37: on ESP32-S3-DEVKITC-1-N16R8V / WROOM-2 these are used internally for Octal SPI flash/PSRAM and are not available for external use.
  2. Add RGB LED note to GPIO38 pin description, because v1.1 uses GPIO38 for the addressable RGB LED.
  3. Enrich USB_D+/GPIO20 and USB_D-/GPIO19 descriptions with native USB D+/D- functions.
  4. Clarify 3V3 and 5V0 power pin descriptions with Espressif’s mutually exclusive power-source guidance.
  5. Consider changing visible terminal 5V0 to 5V if strict naming alignment with Espressif documentation is desired.
  6. Consider improving the high-level description; current description text appears noisy and does not clearly state this is an Espressif ESP32-S3-DevKitC-1-N16R8V development board.

  • Source reviewed

  • Available part information in Flux

  • Key official specs

  • Header pinout cross-check

  • J1 official pinout vs Flux symbol

  • J3 official pinout vs Flux symbol

  • Footprint check

  • Pin type / description issues

  • Mismatches / recommended fixes

Documents

Assets

ESP32-S3-DEVKITC-1-N16R8V

ESP32-S3-DEVKITC-1-N16R8V

ESP32-S3-DEVKITC-1-N16R8V Symbol.svgDefault
ESP32-S3-DEVKITC-1-N16R8V-thumb.png

ESP32-S3-DEVKITC-1-N16R8V-thumb.png

ESP32-S3-DEVKITC-1-N16R8V-thumbThumbnail
step

ESP32-S3-DEVKITC-1-N16R8V

ESP32-S3-DEVKITC-1-N16R8V.step3D Model
kicad_mod

ESP32-S3-DEVKITC-1-N16R8V

XCVR_ESP32-S3-DEVKITC-1-N16R8V.kicad_modFootprint

ESP32-S3-DEVKITC-1-N16R8V

ESP32-S3-DEVKITC-1-N16R8V thumbnail
ESP32-S3-DEVKITC-1-N16R8V is an Espressif ESP32-S3-DevKitC-1 v1.1 development board based on the ESP32-S3-WROOM-2-N16R8V module. It provides dual-core ESP32-S3 processing, 2.4 GHz Wi-Fi, Bluetooth LE, 16 MB Octal SPI flash, 8 MB Octal SPI PSRAM, USB programming/debugging, native USB OTG/JTAG capability, onboard power regulation, and two 22-pin 2.54 mm header rows for prototyping. Note: on this WROOM-2/N16R8V variant, GPIO35, GPIO36, and GPIO37 are used internally for Octal SPI flash/PSRAM and are not available for external use; GPIO38 drives the onboard RGB LED on v1.1 boards.

Properties

ESP32-S3-DEVKITC-1-N16R8V

Espressif

Integrated Circuits

docs.espressif.com/projects/esp-dev-kits/en/latest/esp32s3/esp32-s3-devkitc-1/user_guide_v1.1.html

U

parametric-v1

creativecommons.org/licenses/by/4.0/

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