ESP32-C6-WROOM-1 vs ESP8684-WROOM-03
ESP32-C6-WROOM-1
WROOM · ESP32-C6 · Active
Check price on AliExpress →
As an affiliate we may earn from qualifying purchases. Prices and availability are set by AliExpress.
ESP8684-WROOM-03
WROOM · ESP32-C2 · 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-C6 vs ESP32-C2), so they differ in CPU, wireless and peripherals — not just packaging.
Choose ESP32-C6-WROOM-1 if you need
- Wi-Fi 6 — better battery life and throughput in busy networks
- 802.15.4 radio for Thread, Zigbee and Matter-over-Thread mesh
- higher clock (160 MHz)
- larger flash option (up to 16 MB) for bigger firmware and OTA
- more usable GPIO (23 vs 8)
Choose ESP8684-WROOM-03 if you need
- smaller footprint (15×17.3 mm)
Size, to scale
- ESP32-C6-WROOM-1 — 18×25.5 mm
- ESP8684-WROOM-03 — 15×17.3 mm
Spec differences at a glance
- Max clock: ESP32-C6-WROOM-1 160 MHz · ESP8684-WROOM-03 120 MHz
- SRAM: ESP32-C6-WROOM-1 512 KB · ESP8684-WROOM-03 272 KB
- ROM: ESP32-C6-WROOM-1 320 KB · ESP8684-WROOM-03 576 KB
- Flash options: ESP32-C6-WROOM-1 4 / 8 / 16 MB · ESP8684-WROOM-03 2 / 4 MB
- Co-processor: ESP32-C6-WROOM-1 ULP-RISC-V · ESP8684-WROOM-03 none
- Wi-Fi: ESP32-C6-WROOM-1 Wi-Fi 6 · ESP8684-WROOM-03 Wi-Fi 4
- 802.15.4 (Thread/Zigbee): ESP32-C6-WROOM-1 Yes · ESP8684-WROOM-03 No
- Usable GPIO: ESP32-C6-WROOM-1 23 · ESP8684-WROOM-03 8
- ADC: ESP32-C6-WROOM-1 7× 12-bit · ESP8684-WROOM-03 5× 12-bit
- USB: ESP32-C6-WROOM-1 USB-Serial-JTAG · ESP8684-WROOM-03 USB-Serial(external)
- UART / SPI / I²C / I²S: ESP32-C6-WROOM-1 2 / 1 / 2 / 1 · ESP8684-WROOM-03 2 / 1 / 1 / 0
- TWAI (CAN): ESP32-C6-WROOM-1 Yes · ESP8684-WROOM-03 No
- SD/MMC: ESP32-C6-WROOM-1 Yes · ESP8684-WROOM-03 No
- Deep sleep: ESP32-C6-WROOM-1 7 µA · ESP8684-WROOM-03 5 µA
- Dimensions: ESP32-C6-WROOM-1 18 × 25.5 × 3.1 mm · ESP8684-WROOM-03 15 × 17.3 × 2.8 mm
- Pin count: ESP32-C6-WROOM-1 29 · ESP8684-WROOM-03 11
- Temp range: ESP32-C6-WROOM-1 -40 to 85 °C · ESP8684-WROOM-03 -40 to 105 °C
- Crypto: ESP32-C6-WROOM-1 AES, SHA, RSA, HMAC, ECC, RNG · ESP8684-WROOM-03 ECC, SHA, RNG
- Digital signature: ESP32-C6-WROOM-1 Yes · ESP8684-WROOM-03 No
Compute & memory
⚑ flag an error| ESP32-C6-WROOM-1 | ESP8684-WROOM-03 | |
|---|---|---|
| CPU | RISC-V, 1-core | RISC-V, 1-core |
| Max clock≠ | 160 MHz | 120 MHz |
| SRAM≠ | 512 KB | 272 KB |
| ROM≠ | 320 KB | 576 KB |
| Flash options≠ | 4 / 8 / 16 MB | 2 / 4 MB |
| PSRAM | None | None |
| Co-processor≠ | ULP-RISC-V | none |
Wireless
⚑ flag an error| ESP32-C6-WROOM-1 | ESP8684-WROOM-03 | |
|---|---|---|
| Wi-Fi≠ | Wi-Fi 6 | Wi-Fi 4 |
| Wi-Fi bands | 2.4GHz | 2.4GHz |
| Bluetooth | BLE 5.x | BLE 5.x |
| 802.15.4 (Thread/Zigbee)≠ | Yes | No |
| Antenna | PCB | PCB |
Peripherals & I/O
⚑ flag an error| ESP32-C6-WROOM-1 | ESP8684-WROOM-03 | |
|---|---|---|
| Usable GPIO≠ | 23 | 8 |
| ADC≠ | 7× 12-bit | 5× 12-bit |
| USB≠ | USB-Serial-JTAG | USB-Serial(external) |
| UART / SPI / I²C / I²S≠ | 2 / 1 / 2 / 1 | 2 / 1 / 1 / 0 |
| TWAI (CAN)≠ | Yes | No |
| SD/MMC≠ | Yes | No |
| Ethernet MAC | No | No |
| Touch | 0 | 0 |
Power
⚑ flag an error| ESP32-C6-WROOM-1 | ESP8684-WROOM-03 | |
|---|---|---|
| Operating voltage | 3.0-3.6 V | 3.0-3.6 V |
| Deep sleep≠ | 7 µA | 5 µA |
Physical
⚑ flag an error| ESP32-C6-WROOM-1 | ESP8684-WROOM-03 | |
|---|---|---|
| Dimensions≠ | 18 × 25.5 × 3.1 mm | 15 × 17.3 × 2.8 mm |
| Pin count≠ | 29 | 11 |
| Temp range≠ | -40 to 85 °C | -40 to 105 °C |
| Mounting | SMD castellated | SMD castellated |
| Lifecycle | Active | Active |
Security
⚑ flag an error| ESP32-C6-WROOM-1 | ESP8684-WROOM-03 | |
|---|---|---|
| Secure boot | Yes | Yes |
| Flash encryption | Yes | Yes |
| Crypto≠ | AES, SHA, RSA, HMAC, ECC, RNG | ECC, SHA, RNG |
| Digital signature≠ | Yes | No |
| TRNG | Yes | Yes |