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ESP32-S3-DevKitC-1 specs, pinout & datasheets

Microcontroller board · Espressif · Released 2021

Espressif’s ESP32-S3 board: dual-core LX7 with vector instructions, native USB plus a USB-UART port, and an addressable RGB LED.

CPU
2 × Xtensa LX7, 32-bit
Clock
Up to 240 MHz
RAM
512 KB SRAM, plus 0–16 MB PSRAM depending on the module
Flash
8 to 32 MB depending on the module variant
Wireless
2.4 GHz 802.11 b/g/n Wi-Fi; Bluetooth LE 5
I/O voltage
3.3 V
Released
2021
Status
In production

Draft entry: these specs were compiled from the linked sources and are waiting for a second check. Spotted a mistake? Use the form at the end of the page.

Specifications

9 specs
Chip / SoC
Espressif ESP32-S3 in an ESP32-S3-WROOM-1 module[1]
CPU
2 × Xtensa LX7, 32-bit[2]
Clock
Up to 240 MHz[2]
RAM
512 KB SRAM, plus 0–16 MB PSRAM depending on the module[2]
Flash
8 to 32 MB depending on the module variant[1]
I/O voltage
3.3 V[2]
Wireless
2.4 GHz 802.11 b/g/n Wi-Fi; Bluetooth LE 5[2]
USB
Two USB ports: native USB (OTG) and USB-to-UART[1]
Upload limits
8 MB flash, 320 KB RAM[5]

Upload limits are what a sketch or firmware may use after the bootloader, as the build tools enforce them, not the chip’s full memory.

Can I still use it?

5 platforms
Arduino framework
Supported[4]Arduino core for the ESP32 by Espressif.
MicroPython
Supported[12]
CircuitPython
Supported[7]
Zephyr RTOS
Supported[6]
ESP-IDF
Supported[3]

As published by each project, checked weekly. A platform not listed has no published information here, which is not the same as no support.

Datasheets and documents

4 documents

Pinout

36 pins
Pin names in firmware (36 pins)
From the firmware’s board definition[13]
Chip pinBoard names
GPIO0IO0
GPIO1IO1
GPIO2IO2
GPIO3IO3
GPIO4IO4
GPIO5IO5
GPIO6IO6
GPIO7IO7
GPIO8IO8
GPIO9IO9
GPIO10IO10
GPIO11IO11
GPIO12IO12
GPIO13IO13
GPIO14IO14
GPIO15IO15
GPIO16IO16
GPIO17IO17
GPIO18IO18
GPIO19IO19
GPIO20IO20
GPIO21IO21
GPIO35IO35
GPIO36IO36
GPIO37IO37
GPIO38IO38
GPIO39IO39
GPIO40IO40
GPIO41IO41
GPIO42IO42
GPIO43IO43, TX
GPIO44IO44, RX
GPIO45IO45
GPIO46IO46
GPIO47IO47
GPIO48IO48, NEOPIXEL

Gotchas

2 known issues
  • Octal PSRAM takes GPIO35–37. On modules with octal PSRAM (the R8 variants), GPIO35, 36 and 37 are used by the PSRAM and cannot be used as I/O.[1]
  • Two USB ports, two serial devices. Logs from the UART port and the native USB port appear as different devices; set the console output accordingly.[1]

History and use today

Editorial

History

The ESP32-S3 arrived in 2021 as Espressif's dual-core chip for AI at the edge, adding vector instructions and native USB to the ESP32 recipe.[1]

Still useful for

The most capable mainstream ESP32 for camera, display, audio and USB projects.

Projects from the archive

6 builds

Sources

13 sources
  1. ESP32-S3-DevKitC-1 user guide, Espressif
  2. ESP32-S3 Series datasheet, Espressif
  3. ESP-IDF Programming Guide, Espressif
  4. Arduino core for the ESP32, Espressif
  5. PlatformIO board definition (esp32-s3-devkitc-1) at 1152c8f691
  6. Zephyr board definition (esp32s3_devkitc) at 3c61a12bdd
  7. CircuitPython board definition (espressif_esp32s3_devkitc_1_n16) at 83b54473a1
  8. CircuitPython board definition (espressif_esp32s3_devkitc_1_n32r8) at 83b54473a1
  9. CircuitPython board definition (espressif_esp32s3_devkitc_1_n8) at 83b54473a1
  10. CircuitPython board definition (espressif_esp32s3_devkitc_1_n8r2) at 83b54473a1
  11. CircuitPython board definition (espressif_esp32s3_devkitc_1_n8r8) at 83b54473a1
  12. MicroPython board definition (ESP32_GENERIC_S3) at 19e685eca9
  13. CircuitPython pin definitions (espressif_esp32s3_devkitc_1_n16) at 395b187017

Spotted a mistake?

Reviewed by hand

Every report is read by a person and checked against a source before anything changes. Please link one if you have it.

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