component
ESP32-S3-WROOM-1U-N4R8
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.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20251024
| Name | Last updated |
|---|---|
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| esp32-s3-wroom-1u-n4r8-etched.glb | 7d ago |
| esp32-s3-wroom-1u-n4r8-etched.step | 7d ago |
| esp32-s3-wroom-1u-n4r8-hero.glb | 7d ago |
| esp32-s3-wroom-1u-n4r8-hero.overlay.json | 7d ago |
| esp32-s3-wroom-1u-n4r8.glb | 7d ago |
| esp32-s3-wroom-1u-n4r8.kicad_mod | 8d ago |
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| esp32-s3-wroom-1u-n4r8.lbr | 7d ago |
| esp32-s3-wroom-1u-n4r8.step | 7d ago |
| package.json | 7d ago |
| page.json | 7d ago |
| README.md | 7d ago |
ESP32-S3-WROOM-1U-N4R8
Espressif Systems · WiFi Modules · ESP32-S3-WROOM-1U
ESP32-S3-WROOM-1U-N4R8 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 pin of the module. |
| 2 | 3V3 | power_in | Power supply input; Table 6-2 gives a module supply (VDD33) range of 3.0 V to 3.6 V with 3.3 V typical and at least 0.5 A from the external supply. |
| 3 | EN | input | Chip enable: high turns the chip on and low powers it off, and the pin must not be left floating. |
| 4 | IO4 | bidirectional | Bidirectional GPIO4 with RTC_GPIO4, TOUCH4 and ADC1_CH3 alternate functions. |
| 5 | IO5 | bidirectional | Bidirectional GPIO5 with RTC_GPIO5, TOUCH5 and ADC1_CH4 alternate functions. |
| 6 | IO6 | bidirectional | Bidirectional GPIO6 with RTC_GPIO6, TOUCH6 and ADC1_CH5 alternate functions. |
| 7 | IO7 | bidirectional | Bidirectional GPIO7 with RTC_GPIO7, TOUCH7 and ADC1_CH6 alternate functions. |
| 8 | IO15 | bidirectional | Bidirectional GPIO15 with RTC_GPIO15, U0RTS, ADC2_CH4 and XTAL_32K_P alternate functions. |
| 9 | IO16 | bidirectional | Bidirectional GPIO16 with RTC_GPIO16, U0CTS, ADC2_CH5 and XTAL_32K_N alternate functions. |
| 10 | IO17 | bidirectional | Bidirectional GPIO17 with RTC_GPIO17, U1TXD and ADC2_CH6 alternate functions. |
| 11 | IO18 | bidirectional | Bidirectional GPIO18 with RTC_GPIO18, U1RXD, ADC2_CH7 and CLK_OUT3 alternate functions. |
| 12 | IO8 | bidirectional | Bidirectional GPIO8 with RTC_GPIO8, TOUCH8, ADC1_CH7 and SUBSPICS1 alternate functions. |
| 13 | IO19 | bidirectional | Bidirectional GPIO19 with RTC_GPIO19, U1RTS, ADC2_CH8, CLK_OUT2 and USB_D- alternate functions. |
| 14 | IO20 | bidirectional | Bidirectional GPIO20 with RTC_GPIO20, U1CTS, ADC2_CH9, CLK_OUT1 and USB_D+ alternate functions. |
| 15 | IO3 | bidirectional | Bidirectional GPIO3 with RTC_GPIO3, TOUCH3 and ADC1_CH2 alternate functions; it is a strapping pin for JTAG signal source selection. |
| 16 | IO46 | bidirectional | Bidirectional GPIO46, which is also a strapping pin for chip boot mode and ROM message printing control. |
| 17 | IO9 | bidirectional | Bidirectional GPIO9 with RTC_GPIO9, TOUCH9, ADC1_CH8, FSPIHD and SUBSPIHD alternate functions. |
| 18 | IO10 | bidirectional | Bidirectional GPIO10 with RTC_GPIO10, TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4 and SUBSPICS0 alternate functions. |
| 19 | IO11 | bidirectional | Bidirectional GPIO11 with RTC_GPIO11, TOUCH11, ADC2_CH0, FSPID, FSPIIO5 and SUBSPID alternate functions. |
| 20 | IO12 | bidirectional | Bidirectional GPIO12 with RTC_GPIO12, TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6 and SUBSPICLK alternate functions. |
| 21 | IO13 | bidirectional | Bidirectional GPIO13 with RTC_GPIO13, TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7 and SUBSPIQ alternate functions. |
| 22 | IO14 | bidirectional | Bidirectional GPIO14 with RTC_GPIO14, TOUCH14, ADC2_CH3, FSPIWP, FSPIDQS and SUBSPIWP alternate functions. |
| 23 | IO21 | bidirectional | Bidirectional GPIO21 with RTC_GPIO21 alternate function. |
| 24 | IO47 | bidirectional | Bidirectional GPIO47 with SPICLK_P_DIFF and SUBSPICLK_P_DIFF alternate functions; its I/O works at 1.8 V only on modules with ESP32-S3R16V, not on this variant. |
| 25 | IO48 | bidirectional | Bidirectional GPIO48 with SPICLK_N_DIFF and SUBSPICLK_N_DIFF alternate functions; its I/O works at 1.8 V only on modules with ESP32-S3R16V, not on this variant. |
| 26 | IO45 | bidirectional | Bidirectional GPIO45, which is also a strapping pin setting the VDD_SPI voltage. |
| 27 | IO0 | bidirectional | Bidirectional RTC_GPIO0/GPIO0, which is a strapping pin for chip boot mode with a weak internal pull-up. |
| 28 | IO35 | bidirectional | Bidirectional GPIO35 with SPIIO6, FSPID and SUBSPID alternate functions; on modules with Octal SPI PSRAM (ESP32-S3R8 or ESP32-S3R16V) this pin is connected to the PSRAM and not available for other uses. |
| 29 | IO36 | bidirectional | Bidirectional GPIO36 with SPIIO7, FSPICLK and SUBSPICLK alternate functions; on modules with Octal SPI PSRAM (ESP32-S3R8 or ESP32-S3R16V) this pin is connected to the PSRAM and not available for other uses. |
| 30 | IO37 | bidirectional | Bidirectional GPIO37 with SPIDQS, FSPIQ and SUBSPIQ alternate functions; on modules with Octal SPI PSRAM (ESP32-S3R8 or ESP32-S3R16V) this pin is connected to the PSRAM and not available for other uses. |
| 31 | IO38 | bidirectional | Bidirectional GPIO38 with FSPIWP and SUBSPIWP alternate functions. |
| 32 | IO39 | bidirectional | Bidirectional GPIO39 with MTCK, CLK_OUT3 and SUBSPICS1 alternate functions (JTAG clock by default). |
| 33 | IO40 | bidirectional | Bidirectional GPIO40 with MTDO and CLK_OUT2 alternate functions (JTAG data out by default). |
| 34 | IO41 | bidirectional | Bidirectional GPIO41 with MTDI and CLK_OUT1 alternate functions (JTAG data in by default). |
| 35 | IO42 | bidirectional | Bidirectional GPIO42 with MTMS alternate function (JTAG mode select by default). |
| 36 | RXD0 | bidirectional | Bidirectional UART0 receive pin U0RXD (GPIO44, CLK_OUT2 alternate functions). |
| 37 | TXD0 | bidirectional | Bidirectional UART0 transmit pin U0TXD (GPIO43, CLK_OUT1 alternate functions). |
| 38 | IO2 | bidirectional | Bidirectional RTC_GPIO2/GPIO2 with TOUCH2 and ADC1_CH1 alternate functions. |
| 39 | IO1 | bidirectional | Bidirectional RTC_GPIO1/GPIO1 with TOUCH1 and ADC1_CH0 alternate functions. |
| 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 but improves thermal performance, and excess solder paste can lift the module. |
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 (absolute maximum) | VDD33 | -0.3 | 3.6 | V | 27 | ||
| Storage temperature | TSTORE | -40 | 105 | °C | 27 | ||
| Power supply voltage (recommended) | VDD33 | 3 | 3.3 | 3.6 | V | 27 | |
| Current delivered by external power supply | IVDD | 0.5 | A | 27 | |||
| Operating ambient temperature | TA | -40 | 65 | °C | 65 °C version | 27 | |
| Low-level input voltage | VIL | -0.3 | V | 27 | |||
| Chip reset voltage (EN voltage is within the specified range) | VIL_nRST | -0.3 | V | EN voltage is within the specified range | 28 | ||
| High-level input current | IIH | 50 | nA | 27 | |||
| Low-level input current | IIL | 50 | nA | 27 | |||
| Power supply voltage (3.3 V PSRAM) | VCC | 2.7 | 3.3 | 3.6 | V | Power supply voltage (3.3 V) | 31 |
| Maximum clock frequency (PSRAM) | FC | 80 | MHz | 31 | |||
| Center frequency range of operating channel (Wi-Fi) | 2412 | 2484 | MHz | 32 | |||
| RF transmit power range (Bluetooth LE) | -24 | 20 | dBm | 34 | |||
| Center frequency range of operating channel (Bluetooth LE) | 2402 | 2480 | MHz | 34 |
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-N4R8 - Footprint:
PCM_Espressif:ESP32-S3-WROOM-1U - 3D model: ESP32-S3-WROOM-1U (KiCad packages3D, STEP)
- 3D model files:
esp32-s3-wroom-1u-n4r8-etched.step/esp32-s3-wroom-1u-n4r8-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);esp32-s3-wroom-1u-n4r8.step/esp32-s3-wroom-1u-n4r8.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).