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ESP32-S3-WROOM-1-N8R2

Espressif Systems · WiFi Modules · ESP32-S3-WROOM-1

ESP32-S3-WROOM-1-N8R2 from Espressif Systems, in a ESP32-S3-WROOM-1. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 GND power_in Ground reference pin of the module.
2 3V3 power_in Module power supply pin; the VDD33 supply is recommended at 3.0 V to 3.6 V (3.3 V typical) per Table 6-2.
3 EN input Chip enable: High turns the chip on, Low powers it off; do not leave EN floating.
4 IO4 bidirectional GPIO4, also usable as RTC_GPIO4, TOUCH4 and ADC1_CH3.
5 IO5 bidirectional GPIO5, also usable as RTC_GPIO5, TOUCH5 and ADC1_CH4.
6 IO6 bidirectional GPIO6, also usable as RTC_GPIO6, TOUCH6 and ADC1_CH5.
7 IO7 bidirectional GPIO7, also usable as RTC_GPIO7, TOUCH7 and ADC1_CH6.
8 IO15 bidirectional GPIO15, also usable as RTC_GPIO15, U0RTS, ADC2_CH4 and XTAL_32K_P.
9 IO16 bidirectional GPIO16, also usable as RTC_GPIO16, U0CTS, ADC2_CH5 and XTAL_32K_N.
10 IO17 bidirectional GPIO17, also usable as RTC_GPIO17, U1TXD and ADC2_CH6.
11 IO18 bidirectional GPIO18, also usable as RTC_GPIO18, U1RXD, ADC2_CH7 and CLK_OUT3.
12 IO8 bidirectional GPIO8, also usable as RTC_GPIO8, TOUCH8, ADC1_CH7 and SUBSPICS1.
13 IO19 bidirectional GPIO19, also usable as RTC_GPIO19, U1RTS, ADC2_CH8, CLK_OUT2 and USB_D-.
14 IO20 bidirectional GPIO20, also usable as RTC_GPIO20, U1CTS, ADC2_CH9, CLK_OUT1 and USB_D+.
15 IO3 bidirectional GPIO3, also usable as RTC_GPIO3, TOUCH3 and ADC1_CH2; it is the JTAG signal-source strapping pin and is floating by default at reset.
16 IO46 bidirectional GPIO46; strapping pin for chip boot mode and ROM message printing, with a weak pull-down (default 0).
17 IO9 bidirectional GPIO9, also usable as RTC_GPIO9, TOUCH9, ADC1_CH8, FSPIHD and SUBSPIHD.
18 IO10 bidirectional GPIO10, also usable as RTC_GPIO10, TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4 and SUBSPICS0.
19 IO11 bidirectional GPIO11, also usable as RTC_GPIO11, TOUCH11, ADC2_CH0, FSPID, FSPIIO5 and SUBSPID.
20 IO12 bidirectional GPIO12, also usable as RTC_GPIO12, TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6 and SUBSPICLK.
21 IO13 bidirectional GPIO13, also usable as RTC_GPIO13, TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7 and SUBSPIQ.
22 IO14 bidirectional GPIO14, also usable as RTC_GPIO14, TOUCH14, ADC2_CH3, FSPIWP, FSPIDQS and SUBSPIWP.
23 IO21 bidirectional GPIO21, also usable as RTC_GPIO21.
24 IO47 bidirectional GPIO47, also usable as SPICLK_P_DIFF and SUBSPICLK_P_DIFF; on modules with ESP32-S3R16V its working voltage is 1.8 V.
25 IO48 bidirectional GPIO48, also usable as SPICLK_N_DIFF and SUBSPICLK_N_DIFF; on modules with ESP32-S3R16V its working voltage is 1.8 V.
26 IO45 bidirectional GPIO45; strapping pin for VDD_SPI voltage, with a weak pull-down (default 0).
27 IO0 bidirectional RTC_GPIO0 / GPIO0; strapping pin for chip boot mode, with a weak pull-up (default 1).
28 IO35 bidirectional SPIIO6, GPIO35, FSPID, SUBSPID; default function is set by eFuse bit, and the pin is unavailable on modules with Octal SPI PSRAM (ESP32-S3R8 or ESP32-S3R16V).
29 IO36 bidirectional SPIIO7, GPIO36, FSPICLK, SUBSPICLK; default function is set by eFuse bit, and the pin is unavailable on modules with Octal SPI PSRAM (ESP32-S3R8 or ESP32-S3R16V).
30 IO37 bidirectional SPIDQS, GPIO37, FSPIQ, SUBSPIQ; default function is set by eFuse bit, and the pin is unavailable on modules with Octal SPI PSRAM (ESP32-S3R8 or ESP32-S3R16V).
31 IO38 bidirectional GPIO38, also usable as FSPIWP and SUBSPIWP.
32 IO39 bidirectional MTCK, GPIO39, also usable as CLK_OUT3 and SUBSPICS1 (JTAG clock function).
33 IO40 bidirectional MTDO, GPIO40, also usable as CLK_OUT2 (JTAG data-out function).
34 IO41 bidirectional MTDI, GPIO41, also usable as CLK_OUT1 (JTAG data-in function).
35 IO42 bidirectional MTMS, GPIO42 (JTAG mode-select function).
36 RXD0 bidirectional U0RXD (UART0 receive), also usable as GPIO44 and CLK_OUT2.
37 TXD0 bidirectional U0TXD (UART0 transmit), also usable as GPIO43 and CLK_OUT1.
38 IO2 bidirectional RTC_GPIO2, GPIO2, TOUCH2 and ADC1_CH1.
39 IO1 bidirectional RTC_GPIO1, GPIO1, TOUCH1 and ADC1_CH0.
40 GND power_in Ground pin of the module.
41 EPAD power_in Exposed ground pad; soldering it to the base-board ground is optional and improves thermal performance if soldered with the correct paste amount.

Key specifications

Parameter Value
Manufacturer Espressif Systems
Package ESP32-S3-WROOM-1
Category IoT/Communication Modules
Pins 41

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Power supply voltage VDD33 -0.3 3.6 V 27
Storage temperature TSTORE -40 105 °C 27
Power supply voltage VDD33 3 3.3 3.6 V 27
Current delivered by external power supply IVDD 0.5 A 27
Operating ambient temperature TA -40 85 °C 85 °C version 27
High-level input current IIH 50 nA 27
Low-level input current IIL 50 nA 27
Power supply voltage (1.8 V) VCC 1.62 1.8 1.98 V 31
Power supply voltage (3.3 V) VCC 2.7 3.3 3.6 V 31
Maximum clock frequency FC 80 MHz 31

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin Solder: Sn-Ag-Cu (SAC305) lead-free solder Temperature (°C) 47

CAD (KiCad official)

  • Symbol: ESP32-S3-WROOM-1-N8R2
  • Footprint: PCM_Espressif:ESP32-S3-WROOM-1
  • 3D model: ESP32-S3-WROOM-1 (KiCad packages3D, STEP)
  • 3D model files: esp32-s3-wroom-1-n8r2-etched.step / esp32-s3-wroom-1-n8r2-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); esp32-s3-wroom-1-n8r2.step / esp32-s3-wroom-1-n8r2.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Espressif Systems datasheet (53 pp, sha256 27d71971da07c280, retrieved 2026-10-28, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF