ESP32-S2-WROOM vs ESP32-S3-MINI-1
ESP32-S2-WROOM
WROOM · ESP32-S2 · Active
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ESP32-S3-MINI-1
MINI · ESP32-S3 · Active
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Figures here are compiled from Espressif's official datasheets, with the source linked on each page. Mistakes are possible, so if something looks off, please report it.
Which should you choose?
These run different SoCs (ESP32-S2 vs ESP32-S3), so they differ in CPU, wireless and peripherals, not just packaging.
Choose ESP32-S2-WROOM if you need
no standout advantage over ESP32-S3-MINI-1; it trades on the points opposite.
Choose ESP32-S3-MINI-1 if you need
- Bluetooth LE
- 2 CPU cores vs 1: more headroom for RTOS / parallel work
- vector / AI acceleration for on-device ML and DSP
- PSRAM for camera frames, audio buffers and LVGL/large displays
- larger flash option (up to 8 MB) for bigger firmware and OTA
Size, to scale
- ESP32-S2-WROOM: 18×31 mm
- ESP32-S3-MINI-1: 15.4×20.5 mm
Spec differences at a glance
- CPU: ESP32-S2-WROOM Xtensa LX7, 1-core · ESP32-S3-MINI-1 Xtensa LX7, 2-core
- SRAM: ESP32-S2-WROOM 320 KB · ESP32-S3-MINI-1 512 KB
- ROM: ESP32-S2-WROOM 128 KB · ESP32-S3-MINI-1 384 KB
- Flash options: ESP32-S2-WROOM 4 MB · ESP32-S3-MINI-1 4 / 8 MB
- PSRAM: ESP32-S2-WROOM None · ESP32-S3-MINI-1 2 MB (quad)
- Bluetooth: ESP32-S2-WROOM — · ESP32-S3-MINI-1 BLE 5.x
- Usable GPIO: ESP32-S2-WROOM 37 · ESP32-S3-MINI-1 39
- UART / SPI / I²C / I²S: ESP32-S2-WROOM 2 / 2 / 2 / 1 · ESP32-S3-MINI-1 3 / 2 / 2 / 2
- SD/MMC: ESP32-S2-WROOM No · ESP32-S3-MINI-1 Yes
- Deep sleep: ESP32-S2-WROOM — µA · ESP32-S3-MINI-1 7 µA
- Dimensions: ESP32-S2-WROOM 18 × 31 × 3.3 mm · ESP32-S3-MINI-1 15.4 × 20.5 × 2.4 mm
- Pin count: ESP32-S2-WROOM 42 · ESP32-S3-MINI-1 41
Compute & memory
⚑ flag an error| ESP32-S2-WROOM | ESP32-S3-MINI-1 | |
|---|---|---|
| CPU≠ | Xtensa LX7, 1-core | Xtensa LX7, 2-core |
| Max clock | 240 MHz | 240 MHz |
| SRAM≠ | 320 KB | 512 KB |
| ROM≠ | 128 KB | 384 KB |
| Flash options≠ | 4 MB | 4 / 8 MB |
| PSRAM≠ | None | 2 MB (quad) |
| Co-processor | ULP-RISC-V | ULP-RISC-V |
Wireless
⚑ flag an error| ESP32-S2-WROOM | ESP32-S3-MINI-1 | |
|---|---|---|
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
| Wi-Fi bands | 2.4GHz | 2.4GHz |
| Bluetooth≠ | — | BLE 5.x |
| 802.15.4 (Thread/Zigbee) | No | No |
| Antenna | PCB | PCB |
Peripherals & I/O
⚑ flag an error| ESP32-S2-WROOM | ESP32-S3-MINI-1 | |
|---|---|---|
| Usable GPIO≠ | 37 | 39 |
| ADC | 20× 12-bit | 20× 12-bit |
| USB | USB-OTG | USB-OTG |
| UART / SPI / I²C / I²S≠ | 2 / 2 / 2 / 1 | 3 / 2 / 2 / 2 |
| TWAI (CAN) | Yes | Yes |
| SD/MMC≠ | No | Yes |
| Ethernet MAC | No | No |
| Touch | 14 | 14 |
Power
⚑ flag an error| ESP32-S2-WROOM | ESP32-S3-MINI-1 | |
|---|---|---|
| Operating voltage | 3.0-3.6 V | 3.0-3.6 V |
| Deep sleep≠ | — µA | 7 µA |
Physical
⚑ flag an error| ESP32-S2-WROOM | ESP32-S3-MINI-1 | |
|---|---|---|
| Dimensions≠ | 18 × 31 × 3.3 mm | 15.4 × 20.5 × 2.4 mm |
| Pin count≠ | 42 | 41 |
| Temp range | -40 to 85 °C | -40 to 85 °C |
| Mounting | SMD castellated | SMD castellated |
| Lifecycle | Active | Active |
Security
⚑ flag an error| ESP32-S2-WROOM | ESP32-S3-MINI-1 | |
|---|---|---|
| Secure boot | Yes | Yes |
| Flash encryption | Yes | Yes |
| Crypto | AES, SHA, RSA, HMAC, RNG | AES, SHA, RSA, HMAC, RNG |
| Digital signature | Yes | Yes |
| TRNG | Yes | Yes |