ESP32-C3-MINI-1 vs ESP32-S2-WROOM
ESP32-C3-MINI-1
MINI · ESP32-C3 · Active
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ESP32-S2-WROOM
WROOM · ESP32-S2 · 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-C3 vs ESP32-S2), so they differ in CPU, wireless and peripherals, not just packaging.
Choose ESP32-C3-MINI-1 if you need
- Bluetooth LE
- smaller footprint (13.2×16.6 mm)
Choose ESP32-S2-WROOM if you need
- faster CPU (240 MHz, Xtensa LX7)
- native USB-OTG: act as a USB device/host without a USB-UART chip
- more usable GPIO (37 vs 15)
Size, to scale
- ESP32-C3-MINI-1: 13.2×16.6 mm
- ESP32-S2-WROOM: 18×31 mm
Spec differences at a glance
- CPU: ESP32-C3-MINI-1 RISC-V, 1-core · ESP32-S2-WROOM Xtensa LX7, 1-core
- Max clock: ESP32-C3-MINI-1 160 MHz · ESP32-S2-WROOM 240 MHz
- SRAM: ESP32-C3-MINI-1 400 KB · ESP32-S2-WROOM 320 KB
- ROM: ESP32-C3-MINI-1 384 KB · ESP32-S2-WROOM 128 KB
- Co-processor: ESP32-C3-MINI-1 none · ESP32-S2-WROOM ULP-RISC-V
- Bluetooth: ESP32-C3-MINI-1 BLE 5.x · ESP32-S2-WROOM —
- Usable GPIO: ESP32-C3-MINI-1 15 · ESP32-S2-WROOM 37
- ADC: ESP32-C3-MINI-1 6× 12-bit · ESP32-S2-WROOM 20× 12-bit
- USB: ESP32-C3-MINI-1 USB-Serial-JTAG · ESP32-S2-WROOM USB-OTG
- UART / SPI / I²C / I²S: ESP32-C3-MINI-1 2 / 1 / 1 / 1 · ESP32-S2-WROOM 2 / 2 / 2 / 1
- Touch: ESP32-C3-MINI-1 0 · ESP32-S2-WROOM 14
- Deep sleep: ESP32-C3-MINI-1 5 µA · ESP32-S2-WROOM — µA
- Dimensions: ESP32-C3-MINI-1 13.2 × 16.6 × 2.4 mm · ESP32-S2-WROOM 18 × 31 × 3.3 mm
- Pin count: ESP32-C3-MINI-1 53 · ESP32-S2-WROOM 42
Compute & memory
⚑ flag an error| ESP32-C3-MINI-1 | ESP32-S2-WROOM | |
|---|---|---|
| CPU≠ | RISC-V, 1-core | Xtensa LX7, 1-core |
| Max clock≠ | 160 MHz | 240 MHz |
| SRAM≠ | 400 KB | 320 KB |
| ROM≠ | 384 KB | 128 KB |
| Flash options | 4 MB | 4 MB |
| PSRAM | None | None |
| Co-processor≠ | none | ULP-RISC-V |
Wireless
⚑ flag an error| ESP32-C3-MINI-1 | ESP32-S2-WROOM | |
|---|---|---|
| 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-C3-MINI-1 | ESP32-S2-WROOM | |
|---|---|---|
| Usable GPIO≠ | 15 | 37 |
| ADC≠ | 6× 12-bit | 20× 12-bit |
| USB≠ | USB-Serial-JTAG | USB-OTG |
| UART / SPI / I²C / I²S≠ | 2 / 1 / 1 / 1 | 2 / 2 / 2 / 1 |
| TWAI (CAN) | Yes | Yes |
| SD/MMC | No | No |
| Ethernet MAC | No | No |
| Touch≠ | 0 | 14 |
Power
⚑ flag an error| ESP32-C3-MINI-1 | ESP32-S2-WROOM | |
|---|---|---|
| Operating voltage | 3.0-3.6 V | 3.0-3.6 V |
| Deep sleep≠ | 5 µA | — µA |
Physical
⚑ flag an error| ESP32-C3-MINI-1 | ESP32-S2-WROOM | |
|---|---|---|
| Dimensions≠ | 13.2 × 16.6 × 2.4 mm | 18 × 31 × 3.3 mm |
| Pin count≠ | 53 | 42 |
| Temp range | -40 to 85 °C | -40 to 85 °C |
| Mounting | SMD castellated | SMD castellated |
| Lifecycle | Active | Active |
Security
⚑ flag an error| ESP32-C3-MINI-1 | ESP32-S2-WROOM | |
|---|---|---|
| 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 |