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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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-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 |