ESP32-C3-MINI-1 vs ESP32-C3-WROOM-02
ESP32-C3-MINI-1
MINI · ESP32-C3 · Active
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ESP32-C3-WROOM-02
WROOM · ESP32-C3 · Active
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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?
Both are built on the same ESP32-C3 SoC, so CPU and radios are identical — the choice is about memory, form factor and antenna.
These two are closely matched on the spec sheet — decide on price, availability and which footprint fits your board.
Size, to scale
- ESP32-C3-MINI-1 — 13.2×16.6 mm
- ESP32-C3-WROOM-02 — 18×20 mm
Spec differences at a glance
- Flash options: ESP32-C3-MINI-1 4 MB · ESP32-C3-WROOM-02 4 / 8 / 16 MB
- Dimensions: ESP32-C3-MINI-1 13.2 × 16.6 × 2.4 mm · ESP32-C3-WROOM-02 18 × 20 × 3.2 mm
- Pin count: ESP32-C3-MINI-1 53 · ESP32-C3-WROOM-02 19
Compute & memory
⚑ flag an error| ESP32-C3-MINI-1 | ESP32-C3-WROOM-02 | |
|---|---|---|
| CPU | RISC-V, 1-core | RISC-V, 1-core |
| Max clock | 160 MHz | 160 MHz |
| SRAM | 400 KB | 400 KB |
| ROM | 384 KB | 384 KB |
| Flash options≠ | 4 MB | 4 / 8 / 16 MB |
| PSRAM | None | None |
| Co-processor | none | none |
Wireless
⚑ flag an error| ESP32-C3-MINI-1 | ESP32-C3-WROOM-02 | |
|---|---|---|
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
| Wi-Fi bands | 2.4GHz | 2.4GHz |
| Bluetooth | BLE 5.x | BLE 5.x |
| 802.15.4 (Thread/Zigbee) | No | No |
| Antenna | PCB | PCB |
Peripherals & I/O
⚑ flag an error| ESP32-C3-MINI-1 | ESP32-C3-WROOM-02 | |
|---|---|---|
| Usable GPIO | 15 | 15 |
| ADC | 6× 12-bit | 6× 12-bit |
| USB | USB-Serial-JTAG | USB-Serial-JTAG |
| UART / SPI / I²C / I²S | 2 / 1 / 1 / 1 | 2 / 1 / 1 / 1 |
| TWAI (CAN) | Yes | Yes |
| SD/MMC | No | No |
| Ethernet MAC | No | No |
| Touch | 0 | 0 |
Power
⚑ flag an error| ESP32-C3-MINI-1 | ESP32-C3-WROOM-02 | |
|---|---|---|
| Operating voltage | 3.0-3.6 V | 3.0-3.6 V |
| Deep sleep | 5 µA | 5 µA |
Physical
⚑ flag an error| ESP32-C3-MINI-1 | ESP32-C3-WROOM-02 | |
|---|---|---|
| Dimensions≠ | 13.2 × 16.6 × 2.4 mm | 18 × 20 × 3.2 mm |
| Pin count≠ | 53 | 19 |
| 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-C3-WROOM-02 | |
|---|---|---|
| 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 |