ESP32-S3

SoC
by Espressifesp32-s3
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Specifications

Radios

Wi-Fi
Wi-Fi 4 · 2.4 GHz
Bluetooth LE
BLE 5
Bluetooth Classic
no
802.15.4
no

USB

Native USB
yes
USB type
otg-full-speed + serial-jtag

CPU

Architecture
xtensa-lx7
Cores
2
Max clock
240 MHz
Extensions
simd-vector

Memory

SRAM
512 KB
RTC SRAM
16 KB
ROM
384 KB
External PSRAM
yes

Security

Features
secure-boot-v2flash-encryptionaessharsahmacrsa-dsrngclock-glitch-detection

Dual-core with SIMD/vector instructions for AI/DSP (TinyML), native USB OTG, and the largest GPIO count — the versatile all-rounder. BLE 5, no Classic.

Boards and modules on ESP32-S3 (50)

Frequently asked questions

What are the ESP32-S3 specs / datasheet?

ESP32-S3 is a dual-core Xtensa LX7 SoC clocked up to 240 MHz. It has 512 KB of SRAM and 384 KB of ROM. Radios: Wi-Fi 4, Bluetooth LE 5, and no 802.15.4 radio. It exposes native USB (Serial/JTAG).

What is the ESP32-S3 pinout / GPIO count?

The ESP32-S3 has 45 GPIO pads in total, of which 4 are strapping pins and 5 are tied to USB/flash.

What wireless radios does the ESP32-S3 have?

ESP32-S3's wireless radios: Wi-Fi: Wi-Fi 4 radio. Bluetooth: Bluetooth LE 5. 802.15.4: no 802.15.4 radio.

Does the ESP32-S3 have a low-power (LP) core?

No -- the ESP32-S3 has no separate low-power (LP) core; only its main CPU core (up to 240 MHz).

ESP32-S3 vs ESP32-S31: what's different?

The ESP32-S3 is a dual-core Xtensa LX7 SoC at up to 240 MHz (512 KB SRAM); the ESP32-S31 is a dual-core RISC-V SoC at up to 320 MHz (512 KB SRAM). Wi-Fi: Wi-Fi 4 vs Wi-Fi 6. Bluetooth: BLE 5 vs BLE 5.4. 802.15.4: 802.15.4 no vs 802.15.4 yes. Low-power core: LP core no vs LP core yes.

Notes

  • 802.11mc FTM ranging
  • SIMD for on-device ML/DSP
  • Default drive strength: GPIO17/18 = 10 mA, GPIO19/20 = 40 mA, others 20 mA.