component
ESP32-S3-WROOM-1-N16
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Espressif Systems WiFi Modules, ESP32-S3-WROOM-1. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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ESP32-S3-WROOM-1-N16
Espressif Systems · WiFi Modules · ESP32-S3-WROOM-1
ESP32-S3-WROOM-1-N16 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 connection of the module. |
| 2 | 3V3 | power_in | Module supply input (VDD33): recommended 3.0 V to 3.6 V, typical 3.3 V, absolute maximum -0.3 V to 3.6 V. |
| 3 | EN | input | Chip enable: High turns the chip on, Low powers it off; do not leave EN floating. |
| 4 | IO4 | bidirectional | GPIO4 (RTC_GPIO4, TOUCH4, ADC1_CH3), general-purpose I/O with RTC, touch and ADC functions. |
| 5 | IO5 | bidirectional | GPIO5 (RTC_GPIO5, TOUCH5, ADC1_CH4), general-purpose I/O with RTC, touch and ADC functions. |
| 6 | IO6 | bidirectional | GPIO6 (RTC_GPIO6, TOUCH6, ADC1_CH5), general-purpose I/O with RTC, touch and ADC functions. |
| 7 | IO7 | bidirectional | GPIO7 (RTC_GPIO7, TOUCH7, ADC1_CH6), general-purpose I/O with RTC, touch and ADC functions. |
| 8 | IO15 | bidirectional | GPIO15 (RTC_GPIO15, U0RTS, ADC2_CH4, XTAL_32K_P), general-purpose I/O; U0RTS UART0 request-to-send alternate function. |
| 9 | IO16 | bidirectional | GPIO16 (RTC_GPIO16, U0CTS, ADC2_CH5, XTAL_32K_N), general-purpose I/O; U0CTS UART0 clear-to-send alternate function. |
| 10 | IO17 | bidirectional | GPIO17 (RTC_GPIO17, U1TXD, ADC2_CH6), general-purpose I/O; U1TXD UART1 transmit alternate function. |
| 11 | IO18 | bidirectional | GPIO18 (RTC_GPIO18, U1RXD, ADC2_CH7, CLK_OUT3), general-purpose I/O; U1RXD UART1 receive alternate function. |
| 12 | IO8 | bidirectional | GPIO8 (RTC_GPIO8, TOUCH8, ADC1_CH7, SUBSPICS1), general-purpose I/O with RTC, touch and ADC functions. |
| 13 | IO19 | bidirectional | GPIO19 (RTC_GPIO19, U1RTS, ADC2_CH8, CLK_OUT2, USB_D-), general-purpose I/O; USB_D- is the USB OTG data line. |
| 14 | IO20 | bidirectional | GPIO20 (RTC_GPIO20, U1CTS, ADC2_CH9, CLK_OUT1, USB_D+), general-purpose I/O; USB_D+ is the USB OTG data line. |
| 15 | IO3 | bidirectional | GPIO3 (RTC_GPIO3, TOUCH3, ADC1_CH2); strapping pin for JTAG signal source, floating by default. |
| 16 | IO46 | bidirectional | GPIO46; strapping pin for chip boot mode and ROM message printing, weak pull-down by default (logic 0). |
| 17 | IO9 | bidirectional | GPIO9 (RTC_GPIO9, TOUCH9, ADC1_CH8, FSPIHD, SUBSPIHD), general-purpose I/O with RTC, touch, ADC and SPI alternate functions. |
| 18 | IO10 | bidirectional | GPIO10 (RTC_GPIO10, TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4, SUBSPICS0), general-purpose I/O with RTC, touch, ADC and SPI alternate functions. |
| 19 | IO11 | bidirectional | GPIO11 (RTC_GPIO11, TOUCH11, ADC2_CH0, FSPID, FSPIIO5, SUBSPID), general-purpose I/O with RTC, touch, ADC and SPI alternate functions. |
| 20 | IO12 | bidirectional | GPIO12 (RTC_GPIO12, TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6, SUBSPICLK), general-purpose I/O with RTC, touch, ADC and SPI alternate functions. |
| 21 | IO13 | bidirectional | GPIO13 (RTC_GPIO13, TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7, SUBSPIQ), general-purpose I/O with RTC, touch, ADC and SPI alternate functions. |
| 22 | IO14 | bidirectional | GPIO14 (RTC_GPIO14, TOUCH14, ADC2_CH3, FSPIWP, FSPIDQS, SUBSPIWP), general-purpose I/O with RTC, touch, ADC and SPI alternate functions. |
| 23 | IO21 | bidirectional | GPIO21 (RTC_GPIO21), general-purpose I/O with RTC function. |
| 24 | IO47 | bidirectional | GPIO47 (SPICLK_P_DIFF, SUBSPICLK_P_DIFF); operates at 1.8 V only on ESP32-S3R16V modules, not on other GPIOs' 3.3 V domain. |
| 25 | IO48 | bidirectional | GPIO48 (SPICLK_N_DIFF, SUBSPICLK_N_DIFF); operates at 1.8 V only on ESP32-S3R16V modules, not on other GPIOs' 3.3 V domain. |
| 26 | IO45 | bidirectional | GPIO45; strapping pin for VDD_SPI voltage control, weak pull-down by default (logic 0). |
| 27 | IO0 | bidirectional | GPIO0 (RTC_GPIO0); strapping pin for chip boot mode, weak pull-up by default (logic 1). |
| 28 | IO35 | bidirectional | GPIO35 (SPIIO6, FSPID, SUBSPID); default function set by eFuse, and not available on ESP32-S3R8/R16V modules where it is used by Octal PSRAM. |
| 29 | IO36 | bidirectional | GPIO36 (SPIIO7, FSPICLK, SUBSPICLK); default function set by eFuse, and not available on ESP32-S3R8/R16V modules where it is used by Octal PSRAM. |
| 30 | IO37 | bidirectional | GPIO37 (SPIDQS, FSPIQ, SUBSPIQ); default function set by eFuse, and not available on ESP32-S3R8/R16V modules where it is used by Octal PSRAM. |
| 31 | IO38 | bidirectional | GPIO38 (FSPIWP, SUBSPIWP), general-purpose I/O with SPI alternate functions. |
| 32 | IO39 | bidirectional | GPIO39 (MTCK, CLK_OUT3, SUBSPICS1); MTCK is the JTAG clock function. |
| 33 | IO40 | bidirectional | GPIO40 (MTDO, CLK_OUT2); MTDO is the JTAG data-out function. |
| 34 | IO41 | bidirectional | GPIO41 (MTDI, CLK_OUT1); MTDI is the JTAG data-in function. |
| 35 | IO42 | bidirectional | GPIO42 (MTMS); MTMS is the JTAG mode-select function. |
| 36 | RXD0 | bidirectional | UART0 receive (U0RXD) by default, also GPIO44 and CLK_OUT2. |
| 37 | TXD0 | bidirectional | UART0 transmit (U0TXD) by default, also GPIO43 and CLK_OUT1. |
| 38 | IO2 | bidirectional | GPIO2 (RTC_GPIO2, TOUCH2, ADC1_CH1), general-purpose I/O with RTC, touch and ADC functions. |
| 39 | IO1 | bidirectional | GPIO1 (RTC_GPIO1, TOUCH1, ADC1_CH0), general-purpose I/O with RTC, touch and ADC functions. |
| 40 | GND | power_in | Ground connection of the module. |
| 41 | EPAD | power_in | Exposed ground pad; soldering to base-board ground is optional for thermal performance, and excess paste can increase the module gap. |
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 | TST ORE | -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 | 3.3 V, 25 °C | 27 | ||
| Low-level input current | IIL | 50 | nA | 3.3 V, 25 °C | 27 | ||
| RF transmit power range | -24 | 20 | dBm | Bluetooth LE | 34 | ||
| Center frequency range of operating channel | 2412 | 2484 | MHz | Wi-Fi | 32 | ||
| Center frequency range of operating channel | 2402 | 2480 | MHz | Bluetooth LE | 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-1-N16 - Footprint:
PCM_Espressif:ESP32-S3-WROOM-1 - 3D model: ESP32-S3-WROOM-1 (KiCad packages3D, STEP)
- 3D model files:
esp32-s3-wroom-1-n16-etched.step/esp32-s3-wroom-1-n16-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);esp32-s3-wroom-1-n16.step/esp32-s3-wroom-1-n16.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).
# ESP32-S3-WROOM-1-N16
**Espressif Systems** · WiFi Modules · ESP32-S3-WROOM-1
ESP32-S3-WROOM-1-N16 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 connection of the module. |
| 2 | 3V3 | power_in | Module supply input (VDD33): recommended 3.0 V to 3.6 V, typical 3.3 V, absolute maximum -0.3 V to 3.6 V. |
| 3 | EN | input | Chip enable: High turns the chip on, Low powers it off; do not leave EN floating. |
| 4 | IO4 | bidirectional | GPIO4 (RTC_GPIO4, TOUCH4, ADC1_CH3), general-purpose I/O with RTC, touch and ADC functions. |
| 5 | IO5 | bidirectional | GPIO5 (RTC_GPIO5, TOUCH5, ADC1_CH4), general-purpose I/O with RTC, touch and ADC functions. |
| 6 | IO6 | bidirectional | GPIO6 (RTC_GPIO6, TOUCH6, ADC1_CH5), general-purpose I/O with RTC, touch and ADC functions. |
| 7 | IO7 | bidirectional | GPIO7 (RTC_GPIO7, TOUCH7, ADC1_CH6), general-purpose I/O with RTC, touch and ADC functions. |
| 8 | IO15 | bidirectional | GPIO15 (RTC_GPIO15, U0RTS, ADC2_CH4, XTAL_32K_P), general-purpose I/O; U0RTS UART0 request-to-send alternate function. |
| 9 | IO16 | bidirectional | GPIO16 (RTC_GPIO16, U0CTS, ADC2_CH5, XTAL_32K_N), general-purpose I/O; U0CTS UART0 clear-to-send alternate function. |
| 10 | IO17 | bidirectional | GPIO17 (RTC_GPIO17, U1TXD, ADC2_CH6), general-purpose I/O; U1TXD UART1 transmit alternate function. |
| 11 | IO18 | bidirectional | GPIO18 (RTC_GPIO18, U1RXD, ADC2_CH7, CLK_OUT3), general-purpose I/O; U1RXD UART1 receive alternate function. |
| 12 | IO8 | bidirectional | GPIO8 (RTC_GPIO8, TOUCH8, ADC1_CH7, SUBSPICS1), general-purpose I/O with RTC, touch and ADC functions. |
| 13 | IO19 | bidirectional | GPIO19 (RTC_GPIO19, U1RTS, ADC2_CH8, CLK_OUT2, USB_D-), general-purpose I/O; USB_D- is the USB OTG data line. |
| 14 | IO20 | bidirectional | GPIO20 (RTC_GPIO20, U1CTS, ADC2_CH9, CLK_OUT1, USB_D+), general-purpose I/O; USB_D+ is the USB OTG data line. |
| 15 | IO3 | bidirectional | GPIO3 (RTC_GPIO3, TOUCH3, ADC1_CH2); strapping pin for JTAG signal source, floating by default. |
| 16 | IO46 | bidirectional | GPIO46; strapping pin for chip boot mode and ROM message printing, weak pull-down by default (logic 0). |
| 17 | IO9 | bidirectional | GPIO9 (RTC_GPIO9, TOUCH9, ADC1_CH8, FSPIHD, SUBSPIHD), general-purpose I/O with RTC, touch, ADC and SPI alternate functions. |
| 18 | IO10 | bidirectional | GPIO10 (RTC_GPIO10, TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4, SUBSPICS0), general-purpose I/O with RTC, touch, ADC and SPI alternate functions. |
| 19 | IO11 | bidirectional | GPIO11 (RTC_GPIO11, TOUCH11, ADC2_CH0, FSPID, FSPIIO5, SUBSPID), general-purpose I/O with RTC, touch, ADC and SPI alternate functions. |
| 20 | IO12 | bidirectional | GPIO12 (RTC_GPIO12, TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6, SUBSPICLK), general-purpose I/O with RTC, touch, ADC and SPI alternate functions. |
| 21 | IO13 | bidirectional | GPIO13 (RTC_GPIO13, TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7, SUBSPIQ), general-purpose I/O with RTC, touch, ADC and SPI alternate functions. |
| 22 | IO14 | bidirectional | GPIO14 (RTC_GPIO14, TOUCH14, ADC2_CH3, FSPIWP, FSPIDQS, SUBSPIWP), general-purpose I/O with RTC, touch, ADC and SPI alternate functions. |
| 23 | IO21 | bidirectional | GPIO21 (RTC_GPIO21), general-purpose I/O with RTC function. |
| 24 | IO47 | bidirectional | GPIO47 (SPICLK_P_DIFF, SUBSPICLK_P_DIFF); operates at 1.8 V only on ESP32-S3R16V modules, not on other GPIOs' 3.3 V domain. |
| 25 | IO48 | bidirectional | GPIO48 (SPICLK_N_DIFF, SUBSPICLK_N_DIFF); operates at 1.8 V only on ESP32-S3R16V modules, not on other GPIOs' 3.3 V domain. |
| 26 | IO45 | bidirectional | GPIO45; strapping pin for VDD_SPI voltage control, weak pull-down by default (logic 0). |
| 27 | IO0 | bidirectional | GPIO0 (RTC_GPIO0); strapping pin for chip boot mode, weak pull-up by default (logic 1). |
| 28 | IO35 | bidirectional | GPIO35 (SPIIO6, FSPID, SUBSPID); default function set by eFuse, and not available on ESP32-S3R8/R16V modules where it is used by Octal PSRAM. |
| 29 | IO36 | bidirectional | GPIO36 (SPIIO7, FSPICLK, SUBSPICLK); default function set by eFuse, and not available on ESP32-S3R8/R16V modules where it is used by Octal PSRAM. |
| 30 | IO37 | bidirectional | GPIO37 (SPIDQS, FSPIQ, SUBSPIQ); default function set by eFuse, and not available on ESP32-S3R8/R16V modules where it is used by Octal PSRAM. |
| 31 | IO38 | bidirectional | GPIO38 (FSPIWP, SUBSPIWP), general-purpose I/O with SPI alternate functions. |
| 32 | IO39 | bidirectional | GPIO39 (MTCK, CLK_OUT3, SUBSPICS1); MTCK is the JTAG clock function. |
| 33 | IO40 | bidirectional | GPIO40 (MTDO, CLK_OUT2); MTDO is the JTAG data-out function. |
| 34 | IO41 | bidirectional | GPIO41 (MTDI, CLK_OUT1); MTDI is the JTAG data-in function. |
| 35 | IO42 | bidirectional | GPIO42 (MTMS); MTMS is the JTAG mode-select function. |
| 36 | RXD0 | bidirectional | UART0 receive (U0RXD) by default, also GPIO44 and CLK_OUT2. |
| 37 | TXD0 | bidirectional | UART0 transmit (U0TXD) by default, also GPIO43 and CLK_OUT1. |
| 38 | IO2 | bidirectional | GPIO2 (RTC_GPIO2, TOUCH2, ADC1_CH1), general-purpose I/O with RTC, touch and ADC functions. |
| 39 | IO1 | bidirectional | GPIO1 (RTC_GPIO1, TOUCH1, ADC1_CH0), general-purpose I/O with RTC, touch and ADC functions. |
| 40 | GND | power_in | Ground connection of the module. |
| 41 | EPAD | power_in | Exposed ground pad; soldering to base-board ground is optional for thermal performance, and excess paste can increase the module gap. |
## 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 | TST ORE | -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 | 3.3 V, 25 °C | 27 |
| Low-level input current | IIL | | | 50 | nA | 3.3 V, 25 °C | 27 |
| RF transmit power range | | -24 | | 20 | dBm | Bluetooth LE | 34 |
| Center frequency range of operating channel | | 2412 | | 2484 | MHz | Wi-Fi | 32 |
| Center frequency range of operating channel | | 2402 | | 2480 | MHz | Bluetooth LE | 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-1-N16`
- Footprint: `PCM_Espressif:ESP32-S3-WROOM-1`
- 3D model: ESP32-S3-WROOM-1 (KiCad packages3D, STEP)
- 3D model files: `esp32-s3-wroom-1-n16-etched.step` / `esp32-s3-wroom-1-n16-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esp32-s3-wroom-1-n16.step` / `esp32-s3-wroom-1-n16.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Espressif Systems datasheet](https://www.espressif.com/sites/default/files/documentation/esp32-s3-wroom-1_wroom-1u_datasheet_en.pdf) (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](docs/esp32-s3-wroom-1-n16-datasheet.pdf)