ESP32-C61-WROOM-1 vs ESP32-WROOM-32E
ESP32-C61-WROOM-1
WROOM · ESP32-C61 · New
Check price on AliExpress →
As an affiliate we may earn from qualifying purchases. Prices and availability are set by AliExpress.
ESP32-WROOM-32E
WROOM · ESP32 · Active
Check price on AliExpress →
As an affiliate we may earn from qualifying purchases. Prices and availability are set by AliExpress.
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-C61 vs ESP32), so they differ in CPU, wireless and peripherals, not just packaging.
Choose ESP32-C61-WROOM-1 if you need
- Wi-Fi 6: better battery life and throughput in busy networks
- more PSRAM (up to 8 MB)
Choose ESP32-WROOM-32E if you need
- Bluetooth Classic (BR/EDR) for legacy SPP / A2DP audio
- 2 CPU cores vs 1: more headroom for RTOS / parallel work
- faster CPU (240 MHz, Xtensa LX6)
- Ethernet MAC for wired networking (add an external PHY)
- more usable GPIO (26 vs 23)
Size, to scale
Same footprint: both are 18×25.5 mm.
Spec differences at a glance
- CPU: ESP32-C61-WROOM-1 RISC-V, 1-core · ESP32-WROOM-32E Xtensa LX6, 2-core
- Max clock: ESP32-C61-WROOM-1 160 MHz · ESP32-WROOM-32E 240 MHz
- SRAM: ESP32-C61-WROOM-1 320 KB · ESP32-WROOM-32E 520 KB
- ROM: ESP32-C61-WROOM-1 256 KB · ESP32-WROOM-32E 448 KB
- Flash options: ESP32-C61-WROOM-1 8 / 16 MB · ESP32-WROOM-32E 4 / 8 / 16 MB
- PSRAM: ESP32-C61-WROOM-1 2 / 8 MB (quad) · ESP32-WROOM-32E 2 MB (quad)
- Co-processor: ESP32-C61-WROOM-1 none · ESP32-WROOM-32E ULP-FSM
- Wi-Fi: ESP32-C61-WROOM-1 Wi-Fi 6 · ESP32-WROOM-32E Wi-Fi 4
- Bluetooth: ESP32-C61-WROOM-1 BLE 5.x · ESP32-WROOM-32E BT Classic + BLE
- Usable GPIO: ESP32-C61-WROOM-1 23 · ESP32-WROOM-32E 26
- ADC: ESP32-C61-WROOM-1 4× 12-bit · ESP32-WROOM-32E 18× 12-bit
- USB: ESP32-C61-WROOM-1 USB-Serial-JTAG · ESP32-WROOM-32E USB-Serial(external)
- UART / SPI / I²C / I²S: ESP32-C61-WROOM-1 3 / 1 / 1 / 1 · ESP32-WROOM-32E 3 / 2 / 2 / 2
- TWAI (CAN): ESP32-C61-WROOM-1 No · ESP32-WROOM-32E Yes
- Ethernet MAC: ESP32-C61-WROOM-1 No · ESP32-WROOM-32E Yes
- Touch: ESP32-C61-WROOM-1 0 · ESP32-WROOM-32E 10
- Pin count: ESP32-C61-WROOM-1 29 · ESP32-WROOM-32E 38
- Lifecycle: ESP32-C61-WROOM-1 New · ESP32-WROOM-32E Active
- Crypto: ESP32-C61-WROOM-1 AES, SHA, ECC, ECDSA, RNG · ESP32-WROOM-32E AES, SHA, RSA, RNG
- Digital signature: ESP32-C61-WROOM-1 Yes · ESP32-WROOM-32E No
Compute & memory
⚑ flag an error| ESP32-C61-WROOM-1 | ESP32-WROOM-32E | |
|---|---|---|
| CPU≠ | RISC-V, 1-core | Xtensa LX6, 2-core |
| Max clock≠ | 160 MHz | 240 MHz |
| SRAM≠ | 320 KB | 520 KB |
| ROM≠ | 256 KB | 448 KB |
| Flash options≠ | 8 / 16 MB | 4 / 8 / 16 MB |
| PSRAM≠ | 2 / 8 MB (quad) | 2 MB (quad) |
| Co-processor≠ | none | ULP-FSM |
Wireless
⚑ flag an error| ESP32-C61-WROOM-1 | ESP32-WROOM-32E | |
|---|---|---|
| Wi-Fi≠ | Wi-Fi 6 | Wi-Fi 4 |
| Wi-Fi bands | 2.4GHz | 2.4GHz |
| Bluetooth≠ | BLE 5.x | BT Classic + BLE |
| 802.15.4 (Thread/Zigbee) | No | No |
| Antenna | PCB | PCB |
Peripherals & I/O
⚑ flag an error| ESP32-C61-WROOM-1 | ESP32-WROOM-32E | |
|---|---|---|
| Usable GPIO≠ | 23 | 26 |
| ADC≠ | 4× 12-bit | 18× 12-bit |
| USB≠ | USB-Serial-JTAG | USB-Serial(external) |
| UART / SPI / I²C / I²S≠ | 3 / 1 / 1 / 1 | 3 / 2 / 2 / 2 |
| TWAI (CAN)≠ | No | Yes |
| SD/MMC | Yes | Yes |
| Ethernet MAC≠ | No | Yes |
| Touch≠ | 0 | 10 |
Power
⚑ flag an error| ESP32-C61-WROOM-1 | ESP32-WROOM-32E | |
|---|---|---|
| Operating voltage | 3.0-3.6 V | 3.0-3.6 V |
| Deep sleep | 10 µA | 10 µA |
Physical
⚑ flag an error| ESP32-C61-WROOM-1 | ESP32-WROOM-32E | |
|---|---|---|
| Dimensions | 18 × 25.5 × 3.1 mm | 18 × 25.5 × 3.1 mm |
| Pin count≠ | 29 | 38 |
| Temp range | -40 to 85 °C | -40 to 85 °C |
| Mounting | SMD castellated | SMD castellated |
| Lifecycle≠ | New | Active |
Security
⚑ flag an error| ESP32-C61-WROOM-1 | ESP32-WROOM-32E | |
|---|---|---|
| Secure boot | Yes | Yes |
| Flash encryption | Yes | Yes |
| Crypto≠ | AES, SHA, ECC, ECDSA, RNG | AES, SHA, RSA, RNG |
| Digital signature≠ | Yes | No |
| TRNG | Yes | Yes |