ESP32-C3-MINI-1 vs ESP32-S2-MINI-2
ESP32-C3-MINI-1
MINI · ESP32-C3 · Active
Check price on AliExpress →
As an affiliate we may earn from qualifying purchases. Prices and availability are set by AliExpress.
ESP32-S2-MINI-2
MINI · ESP32-S2 · Active
Check price on AliExpress →
As an affiliate we may earn from qualifying purchases. Prices and availability are set by AliExpress.
Every figure here is checked against Espressif’s official datasheets. We’ve taken every care to keep it accurate — but datasheets are dense and mistakes happen, 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-MINI-2 if you need
- faster CPU (240 MHz, Xtensa LX7)
- PSRAM for camera frames, audio buffers and LVGL/large displays
- 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-MINI-2 — 15.4×20.5 mm
Spec differences at a glance
- CPU: ESP32-C3-MINI-1 RISC-V, 1-core · ESP32-S2-MINI-2 Xtensa LX7, 1-core
- Max clock: ESP32-C3-MINI-1 160 MHz · ESP32-S2-MINI-2 240 MHz
- SRAM: ESP32-C3-MINI-1 400 KB · ESP32-S2-MINI-2 320 KB
- ROM: ESP32-C3-MINI-1 384 KB · ESP32-S2-MINI-2 128 KB
- PSRAM: ESP32-C3-MINI-1 None · ESP32-S2-MINI-2 2 MB (quad)
- Co-processor: ESP32-C3-MINI-1 none · ESP32-S2-MINI-2 ULP-RISC-V
- Bluetooth: ESP32-C3-MINI-1 BLE 5.x · ESP32-S2-MINI-2 —
- Usable GPIO: ESP32-C3-MINI-1 15 · ESP32-S2-MINI-2 37
- ADC: ESP32-C3-MINI-1 6× 12-bit · ESP32-S2-MINI-2 20× 12-bit
- USB: ESP32-C3-MINI-1 USB-Serial-JTAG · ESP32-S2-MINI-2 USB-OTG
- UART / SPI / I²C / I²S: ESP32-C3-MINI-1 2 / 1 / 1 / 1 · ESP32-S2-MINI-2 2 / 2 / 2 / 1
- Touch: ESP32-C3-MINI-1 0 · ESP32-S2-MINI-2 14
- Deep sleep: ESP32-C3-MINI-1 5 µA · ESP32-S2-MINI-2 — µA
- Dimensions: ESP32-C3-MINI-1 13.2 × 16.6 × 2.4 mm · ESP32-S2-MINI-2 15.4 × 20.5 × 2.4 mm
- Pin count: ESP32-C3-MINI-1 53 · ESP32-S2-MINI-2 41
Compute & memory
⚑ flag an error| ESP32-C3-MINI-1 | ESP32-S2-MINI-2 | |
|---|---|---|
| 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 | 2 MB (quad) |
| Co-processor≠ | none | ULP-RISC-V |
Wireless
⚑ flag an error| ESP32-C3-MINI-1 | ESP32-S2-MINI-2 | |
|---|---|---|
| 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-MINI-2 | |
|---|---|---|
| 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-MINI-2 | |
|---|---|---|
| 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-MINI-2 | |
|---|---|---|
| Dimensions≠ | 13.2 × 16.6 × 2.4 mm | 15.4 × 20.5 × 2.4 mm |
| Pin count≠ | 53 | 41 |
| 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-MINI-2 | |
|---|---|---|
| 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 |