ESP32-C5-WROOM-1 vs ESP32-WROOM-32E
ESP32-C5-WROOM-1
WROOM · ESP32-C5 · New
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ESP32-WROOM-32E
WROOM · ESP32 · 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-C5 vs ESP32), so they differ in CPU, wireless and peripherals, not just packaging.
Choose ESP32-C5-WROOM-1 if you need
- Wi-Fi 6: better battery life and throughput in busy networks
- 5 GHz Wi-Fi: less congestion and higher throughput than 2.4 GHz-only
- 802.15.4 radio for Thread, Zigbee and Matter-over-Thread mesh
- more PSRAM (up to 8 MB)
- larger flash option (up to 32 MB) for bigger firmware and OTA
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
- Ethernet MAC for wired networking (add an external PHY)
- more usable GPIO (26 vs 22)
Size, to scale
- ESP32-C5-WROOM-1: 18×27.5 mm
- ESP32-WROOM-32E: 18×25.5 mm
Spec differences at a glance
- CPU: ESP32-C5-WROOM-1 RISC-V, 1-core · ESP32-WROOM-32E Xtensa LX6, 2-core
- SRAM: ESP32-C5-WROOM-1 384 KB · ESP32-WROOM-32E 520 KB
- ROM: ESP32-C5-WROOM-1 320 KB · ESP32-WROOM-32E 448 KB
- Flash options: ESP32-C5-WROOM-1 4 / 8 / 16 / 32 MB · ESP32-WROOM-32E 4 / 8 / 16 MB
- PSRAM: ESP32-C5-WROOM-1 8 MB (quad) · ESP32-WROOM-32E 2 MB (quad)
- Co-processor: ESP32-C5-WROOM-1 ULP-RISC-V · ESP32-WROOM-32E ULP-FSM
- Wi-Fi: ESP32-C5-WROOM-1 Wi-Fi 6 · ESP32-WROOM-32E Wi-Fi 4
- Wi-Fi bands: ESP32-C5-WROOM-1 2.4+5GHz · ESP32-WROOM-32E 2.4GHz
- Bluetooth: ESP32-C5-WROOM-1 BLE 5.x · ESP32-WROOM-32E BT Classic + BLE
- 802.15.4 (Thread/Zigbee): ESP32-C5-WROOM-1 Yes · ESP32-WROOM-32E No
- Usable GPIO: ESP32-C5-WROOM-1 22 · ESP32-WROOM-32E 26
- ADC: ESP32-C5-WROOM-1 6× 12-bit · ESP32-WROOM-32E 18× 12-bit
- USB: ESP32-C5-WROOM-1 USB-Serial-JTAG · ESP32-WROOM-32E USB-Serial(external)
- UART / SPI / I²C / I²S: ESP32-C5-WROOM-1 2 / 1 / 1 / 1 · ESP32-WROOM-32E 3 / 2 / 2 / 2
- Ethernet MAC: ESP32-C5-WROOM-1 No · ESP32-WROOM-32E Yes
- Touch: ESP32-C5-WROOM-1 0 · ESP32-WROOM-32E 10
- Deep sleep: ESP32-C5-WROOM-1 — µA · ESP32-WROOM-32E 10 µA
- Dimensions: ESP32-C5-WROOM-1 18 × 27.5 × 3.3 mm · ESP32-WROOM-32E 18 × 25.5 × 3.1 mm
- Pin count: ESP32-C5-WROOM-1 29 · ESP32-WROOM-32E 38
- Lifecycle: ESP32-C5-WROOM-1 New · ESP32-WROOM-32E Active
- Crypto: ESP32-C5-WROOM-1 AES, SHA, RSA, HMAC, ECC, ECDSA, RNG · ESP32-WROOM-32E AES, SHA, RSA, RNG
- Digital signature: ESP32-C5-WROOM-1 Yes · ESP32-WROOM-32E No
Compute & memory
⚑ flag an error| ESP32-C5-WROOM-1 | ESP32-WROOM-32E | |
|---|---|---|
| CPU≠ | RISC-V, 1-core | Xtensa LX6, 2-core |
| Max clock | 240 MHz | 240 MHz |
| SRAM≠ | 384 KB | 520 KB |
| ROM≠ | 320 KB | 448 KB |
| Flash options≠ | 4 / 8 / 16 / 32 MB | 4 / 8 / 16 MB |
| PSRAM≠ | 8 MB (quad) | 2 MB (quad) |
| Co-processor≠ | ULP-RISC-V | ULP-FSM |
Wireless
⚑ flag an error| ESP32-C5-WROOM-1 | ESP32-WROOM-32E | |
|---|---|---|
| Wi-Fi≠ | Wi-Fi 6 | Wi-Fi 4 |
| Wi-Fi bands≠ | 2.4+5GHz | 2.4GHz |
| Bluetooth≠ | BLE 5.x | BT Classic + BLE |
| 802.15.4 (Thread/Zigbee)≠ | Yes | No |
| Antenna | PCB | PCB |
Peripherals & I/O
⚑ flag an error| ESP32-C5-WROOM-1 | ESP32-WROOM-32E | |
|---|---|---|
| Usable GPIO≠ | 22 | 26 |
| ADC≠ | 6× 12-bit | 18× 12-bit |
| USB≠ | USB-Serial-JTAG | USB-Serial(external) |
| UART / SPI / I²C / I²S≠ | 2 / 1 / 1 / 1 | 3 / 2 / 2 / 2 |
| TWAI (CAN) | Yes | Yes |
| SD/MMC | Yes | Yes |
| Ethernet MAC≠ | No | Yes |
| Touch≠ | 0 | 10 |
Power
⚑ flag an error| ESP32-C5-WROOM-1 | ESP32-WROOM-32E | |
|---|---|---|
| Operating voltage | 3.0-3.6 V | 3.0-3.6 V |
| Deep sleep≠ | — µA | 10 µA |
Physical
⚑ flag an error| ESP32-C5-WROOM-1 | ESP32-WROOM-32E | |
|---|---|---|
| Dimensions≠ | 18 × 27.5 × 3.3 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-C5-WROOM-1 | ESP32-WROOM-32E | |
|---|---|---|
| Secure boot | Yes | Yes |
| Flash encryption | Yes | Yes |
| Crypto≠ | AES, SHA, RSA, HMAC, ECC, ECDSA, RNG | AES, SHA, RSA, RNG |
| Digital signature≠ | Yes | No |
| TRNG | Yes | Yes |