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Upgrade IoT projects with the ESP32-S3-WROOM-1-N4, a WiFi 6-enabled module featuring 4MB flash, USB OTG, and ultra-low power modes. Perfect for smart homes, industrial automation, and battery-powered devices, this FCC/CE-certified module ensures reliable connectivity and easy integration.
WiFi 6 & 4MB Flash for High-Performance IoT
The ESP32-S3 chip (240MHz dual-core) and 4MB flash handle edge computing and OTA updates, while WiFi 6 ensures faster, stable connections in crowded networks.
Ultra-Low Power Consumption
Dynamic voltage scaling and RTC sleep modes extend battery life to years for wireless sensors and wearables, waking via touch sensors or GPIO triggers.
Plug-and-Play USB OTG & 42 GPIOs
USB OTG eliminates extra chips for host/device communication, while 42 GPIOs support SPI, I2C, LCD interfaces, and camera modules.
Industrial-Grade Durability
Operates in -40°C to 85°C with FCC/CE/SRRC certifications, ideal for harsh environments and mass production.
Pin Layout
Pin Description
Name | No. | Type | Function |
GND | 1,2,11,14,36-53 | P | Ground |
3V3 | 3 | P | Power supply |
NC | 4,7,9,10,15,17,24, | — | NC |
25,28,29,32-35 | |||
IO2 | 5 | I/O/T | GPIO2,ADC1_CH2,FSPIQ |
IO3 | 6 | I/O/T | GPIO3,ADC1_CH3 |
EN | 8 | I | High: on, enables the chip. |
Low: off, the chip powers off. | |||
Note: Do not leave the EN pin floating. | |||
IO0 | 12 | I/O/T | GPIO0,ADC1_CH0,XTAL_32K_P |
IO1 | 13 | I/O/T | GPIO1,ADC1_CH1,XTAL_32K_N |
IO10 | 16 | I/O/T | GPIO10,FSPICS0 |
IO4 | 18 | I/O/T | GPIO4,ADC1_CH4,FSPIHD,MTMS |
IO5 | 19 | I/O/T | GPIO5,ADC2_CH0,FSPIWP,MTDI |
IO6 | 20 | I/O/T | GPIO6,FSPICLK,MTCK |
IO7 | 21 | I/O/T | GPIO7,FSPID,MTDO |
IO8 | 22 | I/O/T | GPIO8 |
IO9 | 23 | I/O/T | GPIO9 |
IO18 | 26 | I/O/T | GPIO18,USB_D- |
IO19 | 27 | I/O/T | GPIO19,USB_D+ |
RXD0 | 30 | I/O/T | GPIO20,U0RXD |
TXD0 | 31 | I/O/T | GPIO21,U0TXD |