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ESP32-S3-WROOM-1U-N4R2
Public Made by Adomby adom
Espressif Systems WiFi Modules, ESP32-S3-WROOM-1U. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownESP32-S3-WROOM-1U-N4R2
Espressif Systems · WiFi Modules · ESP32-S3-WROOM-1U
ESP32-S3-WROOM-1U-N4R2 from Espressif Systems, in a ESP32-S3-WROOM-1U. 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 connection for the module. |
| 2 | 3V3 | power_in | Module power supply input; recommended VDD33 is 3.0 V to 3.6 V (3.3 V typical) with at least 0.5 A delivered externally. |
| 3 | EN | input | Chip enable: high enables the chip and low powers it off, and it must not be left floating. |
| 4 | IO4 | bidirectional | GPIO4 with RTC_GPIO4, TOUCH4 and ADC1_CH3 functions. |
| 5 | IO5 | bidirectional | GPIO5 with RTC_GPIO5, TOUCH5 and ADC1_CH4 functions. |
| 6 | IO6 | bidirectional | GPIO6 with RTC_GPIO6, TOUCH6 and ADC1_CH5 functions. |
| 7 | IO7 | bidirectional | GPIO7 with RTC_GPIO7, TOUCH7 and ADC1_CH6 functions. |
| 8 | IO15 | bidirectional | GPIO15 with RTC_GPIO15, U0RTS, ADC2_CH4 and XTAL_32K_P functions. |
| 9 | IO16 | bidirectional | GPIO16 with RTC_GPIO16, U0CTS, ADC2_CH5 and XTAL_32K_N functions. |
| 10 | IO17 | bidirectional | GPIO17 with RTC_GPIO17, U1TXD and ADC2_CH6 functions. |
| 11 | IO18 | bidirectional | GPIO18 with RTC_GPIO18, U1RXD, ADC2_CH7 and CLK_OUT3 functions. |
| 12 | IO8 | bidirectional | GPIO8 with RTC_GPIO8, TOUCH8, ADC1_CH7 and SUBSPICS1 functions. |
| 13 | IO19 | bidirectional | GPIO19 with RTC_GPIO19, U1RTS, ADC2_CH8, CLK_OUT2 and USB_D- functions. |
| 14 | IO20 | bidirectional | GPIO20 with RTC_GPIO20, U1CTS, ADC2_CH9, CLK_OUT1 and USB_D+ functions. |
| 15 | IO3 | bidirectional | GPIO3 with RTC_GPIO3, TOUCH3 and ADC1_CH2 functions; it is a strapping pin for the JTAG signal source and is floating by default. |
| 16 | IO46 | bidirectional | GPIO46 general-purpose I/O; it is a strapping pin for chip boot mode and ROM message printing with a weak pull-down by default. |
| 17 | IO9 | bidirectional | GPIO9 with RTC_GPIO9, TOUCH9, ADC1_CH8, FSPIHD and SUBSPIHD functions. |
| 18 | IO10 | bidirectional | GPIO10 with RTC_GPIO10, TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4 and SUBSPICS0 functions. |
| 19 | IO11 | bidirectional | GPIO11 with RTC_GPIO11, TOUCH11, ADC2_CH0, FSPID, FSPIIO5 and SUBSPID functions. |
| 20 | IO12 | bidirectional | GPIO12 with RTC_GPIO12, TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6 and SUBSPICLK functions. |
| 21 | IO13 | bidirectional | GPIO13 with RTC_GPIO13, TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7 and SUBSPIQ functions. |
| 22 | IO14 | bidirectional | GPIO14 with RTC_GPIO14, TOUCH14, ADC2_CH3, FSPIWP, FSPIDQS and SUBSPIWP functions. |
| 23 | IO21 | bidirectional | GPIO21 with RTC_GPIO21 function. |
| 24 | IO47 | bidirectional | GPIO47 with SPICLK_P_DIFF and SUBSPICLK_P_DIFF functions; on modules embedded with ESP32-S3R16V it operates at 1.8 V. |
| 25 | IO48 | bidirectional | GPIO48 with SPICLK_N_DIFF and SUBSPICLK_N_DIFF functions; on modules embedded with ESP32-S3R16V it operates at 1.8 V. |
| 26 | IO45 | bidirectional | GPIO45 general-purpose I/O; it is a strapping pin that sets VDD_SPI voltage with a weak pull-down by default. |
| 27 | IO0 | bidirectional | RTC_GPIO0 and GPIO0; it is a strapping pin for chip boot mode with a weak pull-up by default. |
| 28 | IO35 | bidirectional | SPIIO6, GPIO35, FSPID and SUBSPID functions; default function is set by eFuse, and on modules with Octal SPI PSRAM (ESP32-S3R8 or ESP32-S3R16V) it is not available for other uses. |
| 29 | IO36 | bidirectional | SPIIO7, GPIO36, FSPICLK and SUBSPICLK functions; default function is set by eFuse, and on modules with Octal SPI PSRAM (ESP32-S3R8 or ESP32-S3R16V) it is not available for other uses. |
| 30 | IO37 | bidirectional | SPIDQS, GPIO37, FSPIQ and SUBSPIQ functions; default function is set by eFuse, and on modules with Octal SPI PSRAM (ESP32-S3R8 or ESP32-S3R16V) it is not available for other uses. |
| 31 | IO38 | bidirectional | GPIO38, FSPIWP and SUBSPIWP functions. |
| 32 | IO39 | bidirectional | MTCK, GPIO39, CLK_OUT3 and SUBSPICS1 functions. |
| 33 | IO40 | bidirectional | MTDO, GPIO40 and CLK_OUT2 functions. |
| 34 | IO41 | bidirectional | MTDI, GPIO41 and CLK_OUT1 functions. |
| 35 | IO42 | bidirectional | MTMS and GPIO42 functions. |
| 36 | RXD0 | bidirectional | U0RXD (UART0 receive), GPIO44 and CLK_OUT2 functions. |
| 37 | TXD0 | bidirectional | U0TXD (UART0 transmit), GPIO43 and CLK_OUT1 functions. |
| 38 | IO2 | bidirectional | RTC_GPIO2, GPIO2, TOUCH2 and ADC1_CH1 functions. |
| 39 | IO1 | bidirectional | RTC_GPIO1, GPIO1, TOUCH1 and ADC1_CH0 functions. |
| 40 | GND | power_in | Ground connection for the module. |
| 41 | EPAD | power_in | Exposed thermal pad connected to GND; soldering it to the base board ground is optional and improves thermal performance. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Espressif Systems |
| Package | ESP32-S3-WROOM-1U |
| 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 | |||
| Maximum clock frequency | FC | 80 | MHz | 31 | |||
| 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 | |
| RF transmit power range | -24 | 20 | dBm | 34 | |||
| Sensitivity 1 Mbps | -96.5 | dBm | @30.8% PER | 36 | |||
| Maximum received signal 1 Mbps | 8 | dBm | @30.8% PER | 36 | |||
| Sensitivity 2 Mbps | -92 | dBm | @30.8% PER | 36 | |||
| Maximum received signal 2 Mbps | 3 | dBm | @30.8% PER | 37 | |||
| Sensitivity 125 Kbps | -103.5 | dBm | @30.8% PER | 37 | |||
| Sensitivity 500 Kbps | -100 | dBm | @30.8% PER | 37 |
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-1U-N4R2 - Footprint:
PCM_Espressif:ESP32-S3-WROOM-1U - 3D model: ESP32-S3-WROOM-1U (KiCad packages3D, STEP)
- 3D model files:
esp32-s3-wroom-1u-n4r2-etched.step/esp32-s3-wroom-1u-n4r2-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);esp32-s3-wroom-1u-n4r2.step/esp32-s3-wroom-1u-n4r2.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).