Espressif ESP32-C5-WROOM-1-N8 Dual-Band 2.4/5GHz Wi-Fi 6 Bluetooth 5 Wireless Module

Specifications:

• Core Microprocessor: High-performance 32-bit RISC-V single-core processor running up to 160 MHz
• On-Chip Memory Space: 400 KB SRAM, 384 KB ROM
• Integrated Flash Memory: 8 MB high-speed SPI Flash storage (N8 internal configuration)
• Wi-Fi 6 Network Radio: Dual-band (2.4 GHz and 5 GHz) Wi-Fi 6 (802.11ax) supporting 20 MHz bandwidth on both frequencies; backwards compatible with older 802.11a/b/g/n protocols
• Bluetooth Engine: Bluetooth 5 (LE) supporting long-range Coded PHY, high-speed 2 Mbps PHY, and advertising expansions
• Operating Voltage Window: 3.0V to 3.6V DC
• Power Supply Headroom: 80 mA average operating current; must be backed by an external rail capable of providing a minimum of 500 mA peak transients during 5 GHz radio bursts
• Antenna Architecture: Integrated dual-band factory-tuned onboard PCB trace antenna with low-loss transmission matching
• Exposed Peripheral Blocks: Up to 23 accessible GPIO pins, 2x 12-bit ADCs, 3x UART, 2x SPI, 1x I2C, 1x I2S, hardware PWM, and internal temperature sensor
• Form Factor Package: Surface-mount SMD layout measuring exactly 18.0 mm x 25.5 mm x 3.1 mm

Key Applications

• High-Reliability Industrial IoT: Mission-critical manufacturing loggers and factory assets operating in dense RF interference fields.
• Smart Building Automation Gateways: High-throughput control bridges demanding uninterrupted 5 GHz data infrastructure tunnels.
• Streaming & Remote Video Capture: Bandwidth-intensive video monitoring systems leveraging Wi-Fi 6 efficiency loops.
• Popular Project Ideas: Build a localized 5 GHz Home Assistant telemetry server, a high-speed dual-band remote monitoring system, or a low-latency Wi-Fi 6 smart access terminal with BLE proximity verification.

Project Evolution

• If you have constructed your past smart hardware nodes around standard single-band chips like the ESP32-WROOM-32E or ESP32-S3, you have likely encountered terminal network latency when operating in urban high-rise clusters. Stepping up to the ESP32-C5-WROOM-1-N8 completely avoids this frequency bottleneck by unlocking the pristine 5 GHz wireless band alongside modern Wi-Fi 6 resource scheduling rules (like OFDMA and TWT) to reduce channel contention to zero.

   

• Prerequisites: Sound experience working with the official ESP-IDF or Arduino core libraries, combined with safe surface-mount (SMD) reflow or precision hand-soldering habits.

• Hardware Requirements: A dedicated low-dropout 3.3V voltage regulator circuit with high transient suppression, and an external USB-to-TTL serial adapter for firmware flashing.

Virtual Technician & Pin Mapping Guidelines

⚠️ CRITICAL VOLTAGE WARNING: The ESP32-C5-WROOM-1-N8 is an absolute 3.3V DC logic device. Introducing a 5V power input or exposing any of the structural GPIO pins to a 5V logic line will cause immediate, irreversible thermal destruction of the RISC-V core and compromise the integrated RF shield components.

  Pin Map:

• Module VCC (Pin 2) : Dedicated 3.3V Regulator Rail (Must deliver minimum 500mA continuous overhead)
• Module GND (Pin 1 & Pin 40) : Main Common Ground Rail
• Module TXD0 (Pin 28) / Programming RX : USB-to-TTL Serial Breakout Board RX Pin
• Module RXD0 (Pin 29) / Programming TX : USB-to-TTL Serial Breakout Board TX Pin
• Module EN / Chip Reset (Pin 3) : Connect through a 10k Pull-Up resistor to 3.3V; pull to GND via a tactile switch to trigger a hardware reset
• Module IO9 / Boot Bootstrap (Pin 18) : Connect through a 10k Pull-Up resistor to 3.3V; connect directly to GND during a cold boot to force the module into serial download mode

Package Includes:

1 X Espressif ESP32-C5-WROOM-1-N8 Dual-Band 2.4/5GHz Wi-Fi 6 Bluetooth 5 Wireless Module

Frequently Asked Questions (FAQ)

1. What is the primary feature that sets the ESP32-C5 apart from other ESP32 chips?
   The ESP32-C5 is Espressif’s first dual-band wireless core, natively supporting both 2.4 GHz and 5 GHz Wi-Fi 6 frequencies alongside Bluetooth 5.

2. Can I use my standard 2.4 GHz home router with the ESP32-C5-WROOM-1-N8?
   Yes, the module is fully backwards compatible and can connect to standard 2.4 GHz 802.11b/g/n routers as well as dual-band configurations.

3. Does this module support the Arduino IDE environment?
   Yes, the ESP32-C5 architecture is fully integrated into the official Espressif Arduino Core board manager for simple firmware deployments.

4. What does the 'N8' designation signify in this model name?
   The 'N8' suffix indicates that the module comes equipped with 8 Megabytes (MB) of high-speed on-board SPI flash to store extensive application code.

5. Why is 5 GHz Wi-Fi capability critical for industrial IoT hardware?
   The 5 GHz frequency band has significantly less signal traffic and congestion than the 2.4 GHz band, reducing packet collisions and connection dropouts.

6. What processing core is inside the ESP32-C5-WROOM-1-N8 module?
   It features an efficient 32-bit RISC-V single-core processor capable of scaling its clock speed up to 160 MHz.

7. Is this bare module directly compatible with solderless breadboards?
   No, it utilizes a compact surface-mount SMD package layout. You will need to mount it to an adaptor plate or custom PCB to interface with standard breadboards.

8. How does Wi-Fi 6 Target Wake Time benefit battery-powered systems?
   TWT schedules specific transmission slots between the module and your Wi-Fi 6 router, allowing the chip to remain in deep sleep longer to save energy.

9. Can the onboard PCB antenna handle both 2.4 GHz and 5 GHz signals simultaneously?
   Yes, the factory-tuned antenna is designed as a dual-band radiator, matched internally to manage both frequency paths efficiently.

10. What are the peak power needs of this module during active operation?
    While idle current hovers around 80 mA, the power supply must have enough headroom to deliver 500 mA to survive high-frequency 5 GHz transmissions.

11. Can I connect an external antenna to this specific module variant?
    No, this module features a fixed PCB trace antenna. For designs requiring an external antenna connector, choose the ESP32-C5-WROOM-1U variant instead.

12. Does the ESP32-C5 feature built-in hardware security mechanisms?
    Yes, it includes on-chip hardware accelerators for AES, SHA, RSA, ECC, secure boot signatures, and random number generation.

13. What happens if my system supply voltage drops to 2.8V? Voltages below 3.0V can cause internal flash memory read instability or disrupt the radio transmitter, trigger brownout resets.

14. How do I manually trigger the module into its serial flash download mode?
    Ground the IO9 bootstrap pin while cycling power or pulling the EN line low to open up the internal serial bootloader.

15. Does this module support Bluetooth classic audio profiles?
    No, the Bluetooth core is designed exclusively for Bluetooth Low Energy (BLE 5) data routing and smart device provisioning.

16. How many hardware analog-to-digital converter channels are exposed?
    The module gives you access to two separate 12-bit analog-to-digital converters, split across up to 7 shared GPIO pins.

17. What is the default communication baud rate used by the bootloader?
    The internal bootloader uses a standard speed of 115200 bps to share initial hardware verification scripts and flash files.

18. Is MicroPython supported on the ESP32-C5 chip platform?
    Yes, current MicroPython builds support the RISC-V core of the ESP32-C5 for rapid high-level code testing.

19. What is the operating temperature range for industrial installations?
    The module is rated to operate reliably in harsh conditions across an extended industrial range from -40°C up to +85°C.

20. Is the physical package pin layout identical to the older ESP32-WROOM-32D?
    No, the dimensions, dimensions, and pin assignments are entirely different. You must review the official Espressif footprint specifications before updating an existing hardware layout.