ESP32-S2
SoCSpecifications
Radios
- Wi-Fi
- Wi-Fi 4 · 2.4 GHz
- Bluetooth LE
- none
- 802.15.4
- no
USB
- Native USB
- yes
- USB type
- otg-full-speed
CPU
- Architecture
- xtensa-lx7
- Cores
- 1
- Max clock
- 240 MHz
Memory
- SRAM
- 320 KB
- RTC SRAM
- 16 KB
- ROM
- 128 KB
- External PSRAM
- yes
Security
- Features
- secure-boot-v2flash-encryptionaes-256sharsahmacds-peripheralrng
Single-core Wi-Fi chip with full-speed native USB OTG and no Bluetooth radio at all. Largely superseded by the S3 for new designs.
Boards and modules on ESP32-S2 (11)
- Wi-Fi 4 · 2.4 GHzNative USBfeather
- Wi-Fi 4 · 2.4 GHzNative USBfeather
- Wi-Fi 4 · 2.4 GHzNative USBfeather
- Wi-Fi 4 · 2.4 GHzNative USBfunhouse
- Wi-Fi 4 · 2.4 GHzNative USBmagtag
- Wi-Fi 4 · 2.4 GHzNative USBmetro
- Wi-Fi 4 · 2.4 GHzNative USBqt-py
- Wi-Fi 4 · 2.4 GHzNative USBdevkit
- Wi-Fi 4 · 2.4 GHzNative USBdevkit
- Wi-Fi 4 · 2.4 GHzNative USBlolin-mini
- Wi-Fi 4 · 2.4 GHzNative USBthing-plus
Frequently asked questions
What are the ESP32-S2 specs / datasheet?
ESP32-S2 is a single-core Xtensa LX7 SoC clocked up to 240 MHz. It has 320 KB of SRAM and 128 KB of ROM. Radios: Wi-Fi 4, no Bluetooth radio, and no 802.15.4 radio. It exposes native USB (Serial/JTAG).
What is the ESP32-S2 pinout / GPIO count?
The ESP32-S2 has 43 GPIO pads in total, of which 3 are strapping pins and 2 are tied to USB/flash.
What wireless radios does the ESP32-S2 have?
ESP32-S2's wireless radios: Wi-Fi: Wi-Fi 4 radio. Bluetooth: no Bluetooth radio. 802.15.4: no 802.15.4 radio.
Does the ESP32-S2 have a low-power (LP) core?
No -- the ESP32-S2 has no separate low-power (LP) core; only its main CPU core (up to 240 MHz).
ESP32-S2 vs ESP32-S31: what's different?
The ESP32-S2 is a single-core Xtensa LX7 SoC at up to 240 MHz (320 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: no BLE 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
- Default drive strength is 20 mA for all pins (abs-max 40 mA source / 28 mA sink).