ESP32-C3-MINI-1 vs ESP32-H2-MINI-1
ESP32-C3-MINI-1
MINI · ESP32-C3 · Active
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ESP32-H2-MINI-1
MINI · ESP32-H2 · 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-H2), so they differ in CPU, wireless and peripherals, not just packaging.
Choose ESP32-C3-MINI-1 if you need
- newer Wi-Fi (Wi-Fi 4)
- higher clock (160 MHz)
Choose ESP32-H2-MINI-1 if you need
- 802.15.4 radio for Thread, Zigbee and Matter-over-Thread mesh
- more usable GPIO (19 vs 15)
Size, to scale
Same footprint: both are 13.2×16.6 mm.
Spec differences at a glance
- Max clock: ESP32-C3-MINI-1 160 MHz · ESP32-H2-MINI-1 96 MHz
- SRAM: ESP32-C3-MINI-1 400 KB · ESP32-H2-MINI-1 320 KB
- ROM: ESP32-C3-MINI-1 384 KB · ESP32-H2-MINI-1 128 KB
- Flash options: ESP32-C3-MINI-1 4 MB · ESP32-H2-MINI-1 2 / 4 MB
- Wi-Fi: ESP32-C3-MINI-1 Wi-Fi 4 · ESP32-H2-MINI-1 —
- Wi-Fi bands: ESP32-C3-MINI-1 2.4GHz · ESP32-H2-MINI-1 —
- 802.15.4 (Thread/Zigbee): ESP32-C3-MINI-1 No · ESP32-H2-MINI-1 Yes
- Usable GPIO: ESP32-C3-MINI-1 15 · ESP32-H2-MINI-1 19
- ADC: ESP32-C3-MINI-1 6× 12-bit · ESP32-H2-MINI-1 5× 12-bit
- UART / SPI / I²C / I²S: ESP32-C3-MINI-1 2 / 1 / 1 / 1 · ESP32-H2-MINI-1 2 / 1 / 2 / 1
- Deep sleep: ESP32-C3-MINI-1 5 µA · ESP32-H2-MINI-1 7 µA
- Temp range: ESP32-C3-MINI-1 -40 to 85 °C · ESP32-H2-MINI-1 -40 to 105 °C
- Crypto: ESP32-C3-MINI-1 AES, SHA, RSA, HMAC, RNG · ESP32-H2-MINI-1 AES, SHA, RSA, HMAC, ECC, ECDSA, RNG
Compute & memory
⚑ flag an error| ESP32-C3-MINI-1 | ESP32-H2-MINI-1 | |
|---|---|---|
| CPU | RISC-V, 1-core | RISC-V, 1-core |
| Max clock≠ | 160 MHz | 96 MHz |
| SRAM≠ | 400 KB | 320 KB |
| ROM≠ | 384 KB | 128 KB |
| Flash options≠ | 4 MB | 2 / 4 MB |
| PSRAM | None | None |
| Co-processor | none | none |
Wireless
⚑ flag an error| ESP32-C3-MINI-1 | ESP32-H2-MINI-1 | |
|---|---|---|
| Wi-Fi≠ | Wi-Fi 4 | — |
| Wi-Fi bands≠ | 2.4GHz | — |
| Bluetooth | BLE 5.x | BLE 5.x |
| 802.15.4 (Thread/Zigbee)≠ | No | Yes |
| Antenna | PCB | PCB |
Peripherals & I/O
⚑ flag an error| ESP32-C3-MINI-1 | ESP32-H2-MINI-1 | |
|---|---|---|
| Usable GPIO≠ | 15 | 19 |
| ADC≠ | 6× 12-bit | 5× 12-bit |
| USB | USB-Serial-JTAG | USB-Serial-JTAG |
| UART / SPI / I²C / I²S≠ | 2 / 1 / 1 / 1 | 2 / 1 / 2 / 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-H2-MINI-1 | |
|---|---|---|
| Operating voltage | 3.0-3.6 V | 3.0-3.6 V |
| Deep sleep≠ | 5 µA | 7 µA |
Physical
⚑ flag an error| ESP32-C3-MINI-1 | ESP32-H2-MINI-1 | |
|---|---|---|
| Dimensions | 13.2 × 16.6 × 2.4 mm | 13.2 × 16.6 × 2.4 mm |
| Pin count | 53 | 53 |
| Temp range≠ | -40 to 85 °C | -40 to 105 °C |
| Mounting | SMD castellated | SMD castellated |
| Lifecycle | Active | Active |
Security
⚑ flag an error| ESP32-C3-MINI-1 | ESP32-H2-MINI-1 | |
|---|---|---|
| Secure boot | Yes | Yes |
| Flash encryption | Yes | Yes |
| Crypto≠ | AES, SHA, RSA, HMAC, RNG | AES, SHA, RSA, HMAC, ECC, ECDSA, RNG |
| Digital signature | Yes | Yes |
| TRNG | Yes | Yes |