ESP32-S3-WROOM-1U-N8R2

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

ESP32-S3-WROOM-1U-N8R2 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	Module power supply; VDD33 is specified at 3.0 V min, 3.3 V typ, 3.6 V max, with an external supply capable of delivering at least 0.5 A.
3	EN	input	High enables the chip and low powers it off; do not leave the EN pin floating.
4	IO4	bidirectional	GPIO4 with RTC_GPIO4, TOUCH4 and ADC1_CH3 alternate functions.
5	IO5	bidirectional	GPIO5 with RTC_GPIO5, TOUCH5 and ADC1_CH4 alternate functions.
6	IO6	bidirectional	GPIO6 with RTC_GPIO6, TOUCH6 and ADC1_CH5 alternate functions.
7	IO7	bidirectional	GPIO7 with RTC_GPIO7, TOUCH7 and ADC1_CH6 alternate functions.
8	IO15	bidirectional	GPIO15 with RTC_GPIO15, U0RTS, ADC2_CH4 and XTAL_32K_P alternate functions.
9	IO16	bidirectional	GPIO16 with RTC_GPIO16, U0CTS, ADC2_CH5 and XTAL_32K_N alternate functions.
10	IO17	bidirectional	GPIO17 with RTC_GPIO17, U1TXD and ADC2_CH6 alternate functions.
11	IO18	bidirectional	GPIO18 with RTC_GPIO18, U1RXD, ADC2_CH7 and CLK_OUT3 alternate functions.
12	IO8	bidirectional	GPIO8 with RTC_GPIO8, TOUCH8, ADC1_CH7 and SUBSPICS1 alternate functions.
13	IO19	bidirectional	GPIO19 with RTC_GPIO19, U1RTS, ADC2_CH8, CLK_OUT2 and USB_D- alternate functions.
14	IO20	bidirectional	GPIO20 with RTC_GPIO20, U1CTS, ADC2_CH9, CLK_OUT1 and USB_D+ alternate functions.
15	IO3	bidirectional	GPIO3 with RTC_GPIO3, TOUCH3 and ADC1_CH2 alternate functions; it is the strapping pin for JTAG signal source selection and floats by default at reset.
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 at reset.
17	IO9	bidirectional	GPIO9 with RTC_GPIO9, TOUCH9, ADC1_CH8, FSPIHD and SUBSPIHD alternate functions.
18	IO10	bidirectional	GPIO10 with RTC_GPIO10, TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4 and SUBSPICS0 alternate functions.
19	IO11	bidirectional	GPIO11 with RTC_GPIO11, TOUCH11, ADC2_CH0, FSPID, FSPIIO5 and SUBSPID alternate functions.
20	IO12	bidirectional	GPIO12 with RTC_GPIO12, TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6 and SUBSPICLK alternate functions.
21	IO13	bidirectional	GPIO13 with RTC_GPIO13, TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7 and SUBSPIQ alternate functions.
22	IO14	bidirectional	GPIO14 with RTC_GPIO14, TOUCH14, ADC2_CH3, FSPIWP, FSPIDQS and SUBSPIWP alternate functions.
23	IO21	bidirectional	GPIO21 with RTC_GPIO21 alternate function.
24	IO47	bidirectional	GPIO47 with SPICLK_P_DIFF and SUBSPICLK_P_DIFF alternate functions; on modules embedding ESP32-S3R16V its working voltage is 1.8 V.
25	IO48	bidirectional	GPIO48 with SPICLK_N_DIFF and SUBSPICLK_N_DIFF alternate functions; on modules embedding ESP32-S3R16V its working voltage is 1.8 V.
26	IO45	bidirectional	GPIO45 general-purpose I/O; it is a strapping pin controlling the VDD_SPI voltage with a weak pull-down at reset.
27	IO0	bidirectional	RTC_GPIO0 and GPIO0; it is a strapping pin for chip boot mode with a weak pull-up at reset.
28	IO35	bidirectional	GPIO35 with SPIIO6, FSPID and SUBSPID alternate functions; it is not available for other uses on modules with Octal SPI PSRAM (ESP32-S3R8 or ESP32-S3R16V).
29	IO36	bidirectional	GPIO36 with SPIIO7, FSPICLK and SUBSPICLK alternate functions; it is not available for other uses on modules with Octal SPI PSRAM (ESP32-S3R8 or ESP32-S3R16V).
30	IO37	bidirectional	GPIO37 with SPIDQS, FSPIQ and SUBSPIQ alternate functions; it is not available for other uses on modules with Octal SPI PSRAM (ESP32-S3R8 or ESP32-S3R16V).
31	IO38	bidirectional	GPIO38 with FSPIWP and SUBSPIWP alternate functions.
32	IO39	bidirectional	GPIO39 with MTCK, CLK_OUT3 and SUBSPICS1 alternate functions.
33	IO40	bidirectional	GPIO40 with MTDO and CLK_OUT2 alternate functions.
34	IO41	bidirectional	GPIO41 with MTDI and CLK_OUT1 alternate functions.
35	IO42	bidirectional	GPIO42 with MTMS alternate function.
36	RXD0	bidirectional	U0RXD (default UART0 receive) with GPIO44 and CLK_OUT2 alternate functions.
37	TXD0	bidirectional	U0TXD (default UART0 transmit) with GPIO43 and CLK_OUT1 alternate functions.
38	IO2	bidirectional	GPIO2 with RTC_GPIO2, TOUCH2 and ADC1_CH1 alternate functions.
39	IO1	bidirectional	GPIO1 with RTC_GPIO1, 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 and improves thermal performance, but excess solder paste can increase the module gap.

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
Low-level input voltage	VIL	-0.3			V		27
High-level input current	IIH			50	nA		27
Low-level input current	IIL			50	nA		27
Chip reset voltage (EN voltage is within the specified range)	VIL_nRST	-0.3			V	EN voltage within the specified range	28
Power supply voltage (1.8 V)	VCC	1.62	1.8	1.98	V	PSRAM 1.8 V supply	31
Power supply voltage (3.3 V)	VCC	2.7	3.3	3.6	V	PSRAM 3.3 V supply	31
Maximum clock frequency	FC	80			MHz	PSRAM	31
Center frequency range of operating channel (Wi-Fi)		2412		2484	MHz	Wi-Fi 802.11b/g/n	32
Center frequency range of operating channel (Bluetooth LE)		2402		2480	MHz	Bluetooth LE	34
RF transmit power range		-24		20	dBm	Bluetooth LE	34
TX EVM limit, 802.11b 1 Mbps				-10	dB	@20.5 dBm	32
TX EVM limit, 802.11b 11 Mbps				-10	dB	@20.5 dBm	32
TX EVM limit, 802.11g 6 Mbps				-5	dB	@20 dBm	32
TX EVM limit, 802.11g 54 Mbps				-25	dB	@18 dBm	32
TX EVM limit, 802.11n HT20 MCS 0				-5	dB	@19 dBm	33
TX EVM limit, 802.11n HT20 MCS 7				-27	dB	@17.5 dBm	33
TX EVM limit, 802.11n HT40 MCS 0				-5	dB	@18.5 dBm	33
TX EVM limit, 802.11n HT40 MCS 7				-27	dB	@17 dBm	33
RX sensitivity, Bluetooth LE 1 Mbps				-96.5	dBm	@30.8% PER	36
Maximum received signal, Bluetooth LE 1 Mbps				8	dBm	@30.8% PER	36
RX sensitivity, Bluetooth LE 2 Mbps				-92	dBm	@30.8% PER	36
Maximum received signal, Bluetooth LE 2 Mbps				3	dBm	@30.8% PER	36
RX sensitivity, Bluetooth LE 125 Kbps				-103.5	dBm	@30.8% PER	37
Maximum received signal, Bluetooth LE 125 Kbps				8	dBm	@30.8% PER	37
RX sensitivity, Bluetooth LE 500 Kbps				-100	dBm	@30.8% PER	37
Maximum received signal, Bluetooth LE 500 Kbps				8	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-N8R2
Footprint: PCM_Espressif:ESP32-S3-WROOM-1U
3D model: ESP32-S3-WROOM-1U (KiCad packages3D, STEP)
3D model files: esp32-s3-wroom-1u-n8r2-etched.step / esp32-s3-wroom-1u-n8r2-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); esp32-s3-wroom-1u-n8r2.step / esp32-s3-wroom-1u-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

# ESP32-S3-WROOM-1U-N8R2

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

ESP32-S3-WROOM-1U-N8R2 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 | Module power supply; VDD33 is specified at 3.0 V min, 3.3 V typ, 3.6 V max, with an external supply capable of delivering at least 0.5 A. |
| 3 | EN | input | High enables the chip and low powers it off; do not leave the EN pin floating. |
| 4 | IO4 | bidirectional | GPIO4 with RTC_GPIO4, TOUCH4 and ADC1_CH3 alternate functions. |
| 5 | IO5 | bidirectional | GPIO5 with RTC_GPIO5, TOUCH5 and ADC1_CH4 alternate functions. |
| 6 | IO6 | bidirectional | GPIO6 with RTC_GPIO6, TOUCH6 and ADC1_CH5 alternate functions. |
| 7 | IO7 | bidirectional | GPIO7 with RTC_GPIO7, TOUCH7 and ADC1_CH6 alternate functions. |
| 8 | IO15 | bidirectional | GPIO15 with RTC_GPIO15, U0RTS, ADC2_CH4 and XTAL_32K_P alternate functions. |
| 9 | IO16 | bidirectional | GPIO16 with RTC_GPIO16, U0CTS, ADC2_CH5 and XTAL_32K_N alternate functions. |
| 10 | IO17 | bidirectional | GPIO17 with RTC_GPIO17, U1TXD and ADC2_CH6 alternate functions. |
| 11 | IO18 | bidirectional | GPIO18 with RTC_GPIO18, U1RXD, ADC2_CH7 and CLK_OUT3 alternate functions. |
| 12 | IO8 | bidirectional | GPIO8 with RTC_GPIO8, TOUCH8, ADC1_CH7 and SUBSPICS1 alternate functions. |
| 13 | IO19 | bidirectional | GPIO19 with RTC_GPIO19, U1RTS, ADC2_CH8, CLK_OUT2 and USB_D- alternate functions. |
| 14 | IO20 | bidirectional | GPIO20 with RTC_GPIO20, U1CTS, ADC2_CH9, CLK_OUT1 and USB_D+ alternate functions. |
| 15 | IO3 | bidirectional | GPIO3 with RTC_GPIO3, TOUCH3 and ADC1_CH2 alternate functions; it is the strapping pin for JTAG signal source selection and floats by default at reset. |
| 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 at reset. |
| 17 | IO9 | bidirectional | GPIO9 with RTC_GPIO9, TOUCH9, ADC1_CH8, FSPIHD and SUBSPIHD alternate functions. |
| 18 | IO10 | bidirectional | GPIO10 with RTC_GPIO10, TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4 and SUBSPICS0 alternate functions. |
| 19 | IO11 | bidirectional | GPIO11 with RTC_GPIO11, TOUCH11, ADC2_CH0, FSPID, FSPIIO5 and SUBSPID alternate functions. |
| 20 | IO12 | bidirectional | GPIO12 with RTC_GPIO12, TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6 and SUBSPICLK alternate functions. |
| 21 | IO13 | bidirectional | GPIO13 with RTC_GPIO13, TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7 and SUBSPIQ alternate functions. |
| 22 | IO14 | bidirectional | GPIO14 with RTC_GPIO14, TOUCH14, ADC2_CH3, FSPIWP, FSPIDQS and SUBSPIWP alternate functions. |
| 23 | IO21 | bidirectional | GPIO21 with RTC_GPIO21 alternate function. |
| 24 | IO47 | bidirectional | GPIO47 with SPICLK_P_DIFF and SUBSPICLK_P_DIFF alternate functions; on modules embedding ESP32-S3R16V its working voltage is 1.8 V. |
| 25 | IO48 | bidirectional | GPIO48 with SPICLK_N_DIFF and SUBSPICLK_N_DIFF alternate functions; on modules embedding ESP32-S3R16V its working voltage is 1.8 V. |
| 26 | IO45 | bidirectional | GPIO45 general-purpose I/O; it is a strapping pin controlling the VDD_SPI voltage with a weak pull-down at reset. |
| 27 | IO0 | bidirectional | RTC_GPIO0 and GPIO0; it is a strapping pin for chip boot mode with a weak pull-up at reset. |
| 28 | IO35 | bidirectional | GPIO35 with SPIIO6, FSPID and SUBSPID alternate functions; it is not available for other uses on modules with Octal SPI PSRAM (ESP32-S3R8 or ESP32-S3R16V). |
| 29 | IO36 | bidirectional | GPIO36 with SPIIO7, FSPICLK and SUBSPICLK alternate functions; it is not available for other uses on modules with Octal SPI PSRAM (ESP32-S3R8 or ESP32-S3R16V). |
| 30 | IO37 | bidirectional | GPIO37 with SPIDQS, FSPIQ and SUBSPIQ alternate functions; it is not available for other uses on modules with Octal SPI PSRAM (ESP32-S3R8 or ESP32-S3R16V). |
| 31 | IO38 | bidirectional | GPIO38 with FSPIWP and SUBSPIWP alternate functions. |
| 32 | IO39 | bidirectional | GPIO39 with MTCK, CLK_OUT3 and SUBSPICS1 alternate functions. |
| 33 | IO40 | bidirectional | GPIO40 with MTDO and CLK_OUT2 alternate functions. |
| 34 | IO41 | bidirectional | GPIO41 with MTDI and CLK_OUT1 alternate functions. |
| 35 | IO42 | bidirectional | GPIO42 with MTMS alternate function. |
| 36 | RXD0 | bidirectional | U0RXD (default UART0 receive) with GPIO44 and CLK_OUT2 alternate functions. |
| 37 | TXD0 | bidirectional | U0TXD (default UART0 transmit) with GPIO43 and CLK_OUT1 alternate functions. |
| 38 | IO2 | bidirectional | GPIO2 with RTC_GPIO2, TOUCH2 and ADC1_CH1 alternate functions. |
| 39 | IO1 | bidirectional | GPIO1 with RTC_GPIO1, 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 and improves thermal performance, but excess solder paste can increase the module gap. |

## 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 |
| Low-level input voltage | VIL | -0.3 |  |  | V |  | 27 |
| High-level input current | IIH |  |  | 50 | nA |  | 27 |
| Low-level input current | IIL |  |  | 50 | nA |  | 27 |
| Chip reset voltage (EN voltage is within the specified range) | VIL_nRST | -0.3 |  |  | V | EN voltage within the specified range | 28 |
| Power supply voltage (1.8 V) | VCC | 1.62 | 1.8 | 1.98 | V | PSRAM 1.8 V supply | 31 |
| Power supply voltage (3.3 V) | VCC | 2.7 | 3.3 | 3.6 | V | PSRAM 3.3 V supply | 31 |
| Maximum clock frequency | FC | 80 |  |  | MHz | PSRAM | 31 |
| Center frequency range of operating channel (Wi-Fi) |  | 2412 |  | 2484 | MHz | Wi-Fi 802.11b/g/n | 32 |
| Center frequency range of operating channel (Bluetooth LE) |  | 2402 |  | 2480 | MHz | Bluetooth LE | 34 |
| RF transmit power range |  | -24 |  | 20 | dBm | Bluetooth LE | 34 |
| TX EVM limit, 802.11b 1 Mbps |  |  |  | -10 | dB | @20.5 dBm | 32 |
| TX EVM limit, 802.11b 11 Mbps |  |  |  | -10 | dB | @20.5 dBm | 32 |
| TX EVM limit, 802.11g 6 Mbps |  |  |  | -5 | dB | @20 dBm | 32 |
| TX EVM limit, 802.11g 54 Mbps |  |  |  | -25 | dB | @18 dBm | 32 |
| TX EVM limit, 802.11n HT20 MCS 0 |  |  |  | -5 | dB | @19 dBm | 33 |
| TX EVM limit, 802.11n HT20 MCS 7 |  |  |  | -27 | dB | @17.5 dBm | 33 |
| TX EVM limit, 802.11n HT40 MCS 0 |  |  |  | -5 | dB | @18.5 dBm | 33 |
| TX EVM limit, 802.11n HT40 MCS 7 |  |  |  | -27 | dB | @17 dBm | 33 |
| RX sensitivity, Bluetooth LE 1 Mbps |  |  |  | -96.5 | dBm | @30.8% PER | 36 |
| Maximum received signal, Bluetooth LE 1 Mbps |  |  |  | 8 | dBm | @30.8% PER | 36 |
| RX sensitivity, Bluetooth LE 2 Mbps |  |  |  | -92 | dBm | @30.8% PER | 36 |
| Maximum received signal, Bluetooth LE 2 Mbps |  |  |  | 3 | dBm | @30.8% PER | 36 |
| RX sensitivity, Bluetooth LE 125 Kbps |  |  |  | -103.5 | dBm | @30.8% PER | 37 |
| Maximum received signal, Bluetooth LE 125 Kbps |  |  |  | 8 | dBm | @30.8% PER | 37 |
| RX sensitivity, Bluetooth LE 500 Kbps |  |  |  | -100 | dBm | @30.8% PER | 37 |
| Maximum received signal, Bluetooth LE 500 Kbps |  |  |  | 8 | 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-N8R2`
- Footprint: `PCM_Espressif:ESP32-S3-WROOM-1U`
- 3D model: ESP32-S3-WROOM-1U (KiCad packages3D, STEP)
- 3D model files: `esp32-s3-wroom-1u-n8r2-etched.step` / `esp32-s3-wroom-1u-n8r2-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esp32-s3-wroom-1u-n8r2.step` / `esp32-s3-wroom-1u-n8r2.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-1u-n8r2-datasheet.pdf)