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ESP32-WROOM-32UE-N4

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Espressif Systems WiFi Modules, ESP32-WROOM-32UE. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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ESP32-WROOM-32UE-N4

Espressif Systems · WiFi Modules · ESP32-WROOM-32UE

ESP32-WROOM-32UE-N4 from Espressif Systems, in a ESP32-WROOM-32UE. 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.
2 3V3 power_in Power supply input; recommended 3.0 to 3.6 V (3.3 V typical), absolute maximum 3.6 V, supply should deliver at least 0.5 A.
3 EN input Chip enable: high = on, low = chip shuts down; must not be left floating.
4 SENSOR_VP input GPIO36 (input only), ADC1_CH0, RTC_GPIO0.
5 SENSOR_VN input GPIO39 (input only), ADC1_CH3, RTC_GPIO3.
6 IO34 input GPIO34 (input only), ADC1_CH6, RTC_GPIO4.
7 IO35 input GPIO35 (input only), ADC1_CH7, RTC_GPIO5.
8 IO32 bidirectional GPIO32, XTAL_32K_P (32.768 kHz crystal oscillator input), ADC1_CH4, TOUCH9, RTC_GPIO9.
9 IO33 bidirectional GPIO33, XTAL_32K_N (32.768 kHz crystal oscillator output), ADC1_CH5, TOUCH8, RTC_GPIO8.
10 IO25 bidirectional GPIO25, DAC_1, ADC2_CH8, RTC_GPIO6, EMAC_RXD0.
11 IO26 bidirectional GPIO26, DAC_2, ADC2_CH9, RTC_GPIO7, EMAC_RXD1.
12 IO27 bidirectional GPIO27, ADC2_CH7, TOUCH7, RTC_GPIO17, EMAC_RX_DV.
13 IO14 bidirectional GPIO14, ADC2_CH6, TOUCH6, RTC_GPIO16, MTMS, HSPICLK, HS2_CLK, SD_CLK, EMAC_TXD2.
14 IO12 bidirectional GPIO12, ADC2_CH5, TOUCH5, RTC_GPIO15, MTDI (strapping pin for VDD_SDIO voltage, default pull-down; keep low at power-on), HSPIQ, HS2_DATA2, SD_DATA2, EMAC_TXD3.
15 GND power_in Ground.
16 IO13 bidirectional GPIO13, ADC2_CH4, TOUCH4, RTC_GPIO14, MTCK, HSPID, HS2_DATA3, SD_DATA3, EMAC_RX_ER.
17 NC unconnected No connection; GPIO6 to GPIO11 are connected to the on-module SPI flash and are not led out.
18 NC unconnected No connection; GPIO6 to GPIO11 are connected to the on-module SPI flash and are not led out.
19 NC unconnected No connection; GPIO6 to GPIO11 are connected to the on-module SPI flash and are not led out.
20 NC unconnected No connection; GPIO6 to GPIO11 are connected to the on-module SPI flash and are not led out.
21 NC unconnected No connection; GPIO6 to GPIO11 are connected to the on-module SPI flash and are not led out.
22 NC unconnected No connection; GPIO6 to GPIO11 are connected to the on-module SPI flash and are not led out.
23 IO15 bidirectional GPIO15, ADC2_CH3, TOUCH3, MTDO (strapping pin for U0TXD printing, default pull-up), HSPICS0, RTC_GPIO13, HS2_CMD, SD_CMD, EMAC_RXD3.
24 IO2 bidirectional GPIO2 (boot mode strapping pin, default pull-down), ADC2_CH2, TOUCH2, RTC_GPIO12, HSPIWP, HS2_DATA0, SD_DATA0.
25 IO0 bidirectional GPIO0 (boot mode strapping pin, default pull-up), ADC2_CH1, TOUCH1, RTC_GPIO11, CLK_OUT1, EMAC_TX_CLK.
26 IO4 bidirectional GPIO4, ADC2_CH0, TOUCH0, RTC_GPIO10, HSPIHD, HS2_DATA1, SD_DATA1, EMAC_TX_ER.
27 IO16 bidirectional GPIO16, HS1_DATA4, U2RXD, EMAC_CLK_OUT; in variants with embedded PSRAM (ESP32-D0WDR2-V3) it is connected to the PSRAM and cannot be used for other functions.
28 IO17 bidirectional GPIO17, HS1_DATA5, U2TXD, EMAC_CLK_OUT_180.
29 IO5 bidirectional GPIO5 (strapping pin for SDIO slave timing, default pull-up), VSPICS0, HS1_DATA6, EMAC_RX_CLK.
30 IO18 bidirectional GPIO18, VSPICLK, HS1_DATA7.
31 IO19 bidirectional GPIO19, VSPIQ, U0CTS, EMAC_TXD0.
32 NC unconnected No connection.
33 IO21 bidirectional GPIO21, VSPIHD, EMAC_TX_EN.
34 RXD0 bidirectional GPIO3, U0RXD, CLK_OUT2.
35 TXD0 bidirectional GPIO1, U0TXD, CLK_OUT3, EMAC_RXD2.
36 IO22 bidirectional GPIO22, VSPIWP, U0RTS, EMAC_TXD1.
37 IO23 bidirectional GPIO23, VSPID, HS1_STROBE.
38 GND power_in Ground.
39 GND power_in Exposed ground pad (EPAD, P_GND); soldering it to board ground is optional but improves thermal performance.

Key specifications

Parameter Value
Manufacturer Espressif Systems
Package ESP32-WROOM-32UE
Category IoT/Communication Modules
Pins 39

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 28
Storage temperature TSTORE -40 105 °C 28
Power supply voltage VDD33 3 3.3 3.6 V 28
Current delivered by external power supply IVDD 0.5 A 28
Operating ambient temperature T -40 85 °C 85 °C version 28
High-level input current IIH 50 nA 28
Low-level input current IIL 50 nA 28
Low-level input voltage of CHIP_PU to shut down the chip VIL_nRST 0.6 V 29
Power supply voltage (3.3 V) VCC 2.7 3.3 3.6 V 30
Maximum clock frequency FC 80 MHz 30
Program/erase cycles 100000 cycles 30
Data retention time TRET 20 years 30
Page program time TPP 0.8 5 ms 30
Sector erase time (4 KB) TSE 70 500 ms 30
Block erase time (32 KB) TBE1 0.2 2 s 30
Block erase time (64 KB) TBE2 0.3 3 s 30
Chip erase time (32 Mb) TCE 20 60 s 30
DNL (Differential nonlinearity) DNL -7 7 LSB RTC controller; ADC with external 100 nF capacitor; DC input; 25 °C; Wi-Fi&Bluetooth off 25
INL (Integral nonlinearity) INL -12 12 LSB RTC controller; ADC with external 100 nF capacitor; DC input; 25 °C; Wi-Fi&Bluetooth off 25
Total error -23 23 mV Atten = 0, effective measurement range of 100 ∼ 950 mV 26
Total error -30 30 mV Atten = 1, effective measurement range of 100 ∼ 1250 mV 26
Total error -40 40 mV Atten = 2, effective measurement range of 150 ∼ 1750 mV 26
Total error -60 60 mV Atten = 3, effective measurement range of 150 ∼ 2450 mV 26
Center frequency range of operating channel (Wi-Fi) 2412 2484 MHz 31
Center frequency range of operating channel (Bluetooth LE) 2402 2480 MHz 33
RF transmit power range (Bluetooth LE) -12 9 dBm 33
Sensitivity (BR) -90 -89 -88 dBm @0.1% BER 33
Adjacent channel selectivity C/I -6 dB F = F0 + 1 MHz 33
Adjacent channel selectivity C/I -25 dB F = F0 + 2 MHz 33
Adjacent channel selectivity C/I -33 dB F = F0, 2 MHz 33
Adjacent channel selectivity C/I -45 dB F = F0, 3 MHz 33
Out-of-band blocking performance -10 dBm 30 MHz ~ 2000 MHz 33
Out-of-band blocking performance -27 dBm 2000 MHz ~ 2400 MHz 33
RF power control range (BR) -12 9 dBm 34
∆ f1avg ∆ f1avg 155 kHz 34
∆ f2max ∆ f2max 127 kHz 34
Sensitivity (EDR π/4 DQPSK) -90 -89 -88 dBm π/4 DQPSK; @0.01% BER 34
Sensitivity (EDR 8DPSK) -84 -83 -82 dBm 8DPSK; @0.01% BER 34
RF power control range (EDR) -12 9 dBm 35
In-band spurious emissions -53 dBm F = F0 +/- > 3 MHz 35
Sensitivity (Bluetooth LE) -94 -93 -92 dBm @30.8% PER 35
Out-of-band blocking performance (BLE) -10 dBm 30 MHz ~ 2000 MHz 36
Out-of-band blocking performance (BLE) -27 dBm 2000 MHz ~ 2400 MHz 36
RF power control range (BLE) -12 9 dBm 36
∆ f1avg ∆ f1avg 265 kHz 36
∆ f2max ∆ f2max 210 kHz 36

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 alloy Figure 15: Reflow Profile 46

CAD (KiCad official)

  • Symbol: ESP32-WROOM-32UE-N4
  • Footprint: PCM_Espressif:ESP32-WROOM-32UE
  • 3D model: ESP32-WROOM-32UE (KiCad packages3D, STEP)
  • 3D model files: esp32-wroom-32ue-n4-etched.step / esp32-wroom-32ue-n4-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); esp32-wroom-32ue-n4.step / esp32-wroom-32ue-n4.glb are the bare package body.

Provenance

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

  • Datasheet: Espressif Systems datasheet (52 pp, sha256 4c7a345d1c1bfec3, 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