ESP32-S3-MINI-1 vs ESP32-WROOM-32E
ESP32-S3-MINI-1
MINI · ESP32-S3 · Active
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ESP32-WROOM-32E
WROOM · ESP32 · 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-S3 vs ESP32), so they differ in CPU, wireless and peripherals, not just packaging.
Choose ESP32-S3-MINI-1 if you need
- vector / AI acceleration for on-device ML and DSP
- native USB-OTG: act as a USB device/host without a USB-UART chip
- more usable GPIO (39 vs 26)
- smaller footprint (15.4×20.5 mm)
Choose ESP32-WROOM-32E if you need
- Bluetooth Classic (BR/EDR) for legacy SPP / A2DP audio
- larger flash option (up to 16 MB) for bigger firmware and OTA
- Ethernet MAC for wired networking (add an external PHY)
Size, to scale
- ESP32-S3-MINI-1: 15.4×20.5 mm
- ESP32-WROOM-32E: 18×25.5 mm
Spec differences at a glance
- CPU: ESP32-S3-MINI-1 Xtensa LX7, 2-core · ESP32-WROOM-32E Xtensa LX6, 2-core
- SRAM: ESP32-S3-MINI-1 512 KB · ESP32-WROOM-32E 520 KB
- ROM: ESP32-S3-MINI-1 384 KB · ESP32-WROOM-32E 448 KB
- Flash options: ESP32-S3-MINI-1 4 / 8 MB · ESP32-WROOM-32E 4 / 8 / 16 MB
- Co-processor: ESP32-S3-MINI-1 ULP-RISC-V · ESP32-WROOM-32E ULP-FSM
- Bluetooth: ESP32-S3-MINI-1 BLE 5.x · ESP32-WROOM-32E BT Classic + BLE
- Usable GPIO: ESP32-S3-MINI-1 39 · ESP32-WROOM-32E 26
- ADC: ESP32-S3-MINI-1 20× 12-bit · ESP32-WROOM-32E 18× 12-bit
- USB: ESP32-S3-MINI-1 USB-OTG · ESP32-WROOM-32E USB-Serial(external)
- Ethernet MAC: ESP32-S3-MINI-1 No · ESP32-WROOM-32E Yes
- Touch: ESP32-S3-MINI-1 14 · ESP32-WROOM-32E 10
- Deep sleep: ESP32-S3-MINI-1 7 µA · ESP32-WROOM-32E 10 µA
- Dimensions: ESP32-S3-MINI-1 15.4 × 20.5 × 2.4 mm · ESP32-WROOM-32E 18 × 25.5 × 3.1 mm
- Pin count: ESP32-S3-MINI-1 41 · ESP32-WROOM-32E 38
- Crypto: ESP32-S3-MINI-1 AES, SHA, RSA, HMAC, RNG · ESP32-WROOM-32E AES, SHA, RSA, RNG
- Digital signature: ESP32-S3-MINI-1 Yes · ESP32-WROOM-32E No
Compute & memory
⚑ flag an error| ESP32-S3-MINI-1 | ESP32-WROOM-32E | |
|---|---|---|
| CPU≠ | Xtensa LX7, 2-core | Xtensa LX6, 2-core |
| Max clock | 240 MHz | 240 MHz |
| SRAM≠ | 512 KB | 520 KB |
| ROM≠ | 384 KB | 448 KB |
| Flash options≠ | 4 / 8 MB | 4 / 8 / 16 MB |
| PSRAM | 2 MB (quad) | 2 MB (quad) |
| Co-processor≠ | ULP-RISC-V | ULP-FSM |
Wireless
⚑ flag an error| ESP32-S3-MINI-1 | ESP32-WROOM-32E | |
|---|---|---|
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
| Wi-Fi bands | 2.4GHz | 2.4GHz |
| Bluetooth≠ | BLE 5.x | BT Classic + BLE |
| 802.15.4 (Thread/Zigbee) | No | No |
| Antenna | PCB | PCB |
Peripherals & I/O
⚑ flag an error| ESP32-S3-MINI-1 | ESP32-WROOM-32E | |
|---|---|---|
| Usable GPIO≠ | 39 | 26 |
| ADC≠ | 20× 12-bit | 18× 12-bit |
| USB≠ | USB-OTG | USB-Serial(external) |
| UART / SPI / I²C / I²S | 3 / 2 / 2 / 2 | 3 / 2 / 2 / 2 |
| TWAI (CAN) | Yes | Yes |
| SD/MMC | Yes | Yes |
| Ethernet MAC≠ | No | Yes |
| Touch≠ | 14 | 10 |
Power
⚑ flag an error| ESP32-S3-MINI-1 | ESP32-WROOM-32E | |
|---|---|---|
| Operating voltage | 3.0-3.6 V | 3.0-3.6 V |
| Deep sleep≠ | 7 µA | 10 µA |
Physical
⚑ flag an error| ESP32-S3-MINI-1 | ESP32-WROOM-32E | |
|---|---|---|
| Dimensions≠ | 15.4 × 20.5 × 2.4 mm | 18 × 25.5 × 3.1 mm |
| Pin count≠ | 41 | 38 |
| Temp range | -40 to 85 °C | -40 to 85 °C |
| Mounting | SMD castellated | SMD castellated |
| Lifecycle | Active | Active |
Security
⚑ flag an error| ESP32-S3-MINI-1 | ESP32-WROOM-32E | |
|---|---|---|
| Secure boot | Yes | Yes |
| Flash encryption | Yes | Yes |
| Crypto≠ | AES, SHA, RSA, HMAC, RNG | AES, SHA, RSA, RNG |
| Digital signature≠ | Yes | No |
| TRNG | Yes | Yes |