Seeed Studio XIAO ESP32-C6 RISC-V 2.4GHz WIFI 6 BLE 5 Dev Board 160MHz

---

Product Link

Seeed Studio XIAO ESP32-C6 WIFI Dev Boardhttps://x.com/openelabio

Description

Seeed Studio XIAO ESP32C6 is powered by the highly-integrated ESP32-C6 SoC, built on two 32-bit RISC-V processors, with a high-performance (HP) processor with running up to 160 MHz, and a low-power (LP) 32-bit RISC-V processor, which can be clocked up to 20 MHz. There are 512KB SRAM and 4 MB Flash on the chip, allowing for more programming space, and binging more possibilities to the IoT control scenarios.

XIAO ESP32C6 is Matter native thanks to its enhanced wireless connectivity. The wireless stack supports 2.4 GHz WiFi 6, Bluetooth® 5.3, Zigbee, and Thread (802.15.4). As the first XIAO member compatible with Thread, it's a perfect fit for building Matter-compliant projects, thus achieving interoperability in smart-home.

Features

• Enhanced Connectivity: Integrates 2.4 GHz Wi-Fi 6 (802.11ax), Bluetooth 5(LE), and IEEE 802.15.4 radio connectivity, allowing for the application of Thread and Zigbee protocols.

• Matter Native: Supports the building of Matter-compliant smart home projects, ensuring interoperability among different smart devices.

• Security Encrypted on Chip: Utilizes the ESP32-C6 to provide secure boot, encryption, and Trusted Execution Environment (TEE) features, enhancing the security of smart home projects.

• Outstanding RF Performance: Features an on-board antenna with up to 80m BLE/Wi-Fi range and offers an interface for connecting an external UFL antenna, ensuring reliable connectivity.

• Leveraging Power Consumption: Offers four working modes, including a deep sleep mode with consumption as low as 15 μA, along with support for lithium battery charge management.

• Dual RISC-V Processors: Incorporates two 32-bit RISC-V processors, with the high-performance processor capable of running up to 160 MHz and the low-power processor up to 20 MHz.

• Classic XIAO Designs: Maintains the thumb-size form factor of 21 x 17.8mm and single-sided mount design, ideal for space-limited projects like wearable devices.

Specifications​

Products	XIAO ESP32C6	XIAO ESP32C3	XIAO ESP32S3
Processor	Espressif ESP32-C6 SoC	Espressif ESP32-C3 SoC	Espressif ESP32-S3R8
Two 32-bit RISC-V processors, with the high-performance one running up to 160 MHz, and the low-power one clocking up to 20 MHz	RISC-V single-core 32-bit chip processor with a four-stage pipeline that operates at up to 160 MHz	Xtensa LX7 dual-core, 32-bit processor running up to 240 MHz
Wireless	Complete 2.4GHz Wi-Fi 6 subsystem	Complete 2.4GHz Wi-Fi subsystem
BLE: Bluetooth 5.0, Bluetooth Mesh	BLE: Bluetooth 5.0, Bluetooth Mesh	BLE: Bluetooth 5.0, Bluetooth Mesh
Zigbee,Thread,IEEE 802.15.4	/	/
On-chip Memory	512KB SRAM & 4MB Flash	400KB SRAM & 4MB Flash	8M PSRAM & 8MB Flash
Interface	1x UART,1x LP_UART, 1x IIC, 1x LP_IIC, 1x SPI,11x GPIO(PWM), 7x ADC, 1xSDIO 2.0 Slave	1x UART, 1x IIC, 1x SPI,11x GPIO(PWM), 4x ADC	1x UART, 1x IIC, 1x IIS, 1x SPI,11x GPIO(PWM), 9x ADC, 1x User LED, 1x Charge LED
1x Reset button, 1x Boot button
Dimensions	21 x 17.8 mm
Power	Input voltage	Type-C: 5V BAT: 4.2V
Circuit operating Voltage (ready to operate)	USB:5V@9mA BAT:3.8V@9mA	Type-C: 5V@19mA BAT: 3.8V@22mA
Charging battery current	100mA	350mA	100mA
Power Consumption Model(Supply Power: 3.8V)	Modem-sleep Model	~ 30 mA	~ 24 mA	~ 25 mA
Light-sleep Model	~ 2.5 mA	~ 3 mA	~ 2 mA
Deep Sleep Model	~ 15 μA	~ 44 μA	~ 14 μA
Working Temperature	-40°C ~ 85°C	-40°C ~ 65°C

Hardware

XIAO ESP32C6 indication diagram
XIAO ESP32C6 Pin List

RF Switch

The RF Switch feature allows you to toggle between the built-in ceramic antenna and an external antenna by configuring GPIO14. To enable this function, you must first set GPIO3 to a low level, as this activates the RF switch control.

• GPIO14 Low Level (Default Setting): The device uses the built-in ceramic antenna.

• GPIO14 High Level: The device switches to the external antenna.

By default, GPIO14 is set to a low level, enabling the built-in antenna. To use an external antenna, set GPIO14 to a high level. Refer to the example code below for guidance on configuring GPIO3 and GPIO14 to activate the external antenna:

void setup() {
  pinMode(WIFI_ENABLE, OUTPUT); // pinMode(3, OUTPUT);
  digitalWrite(WIFI_ENABLE, LOW); // digitalWrite(3, LOW); // Activate RF switch control

  delay(100);

  pinMode(WIFI_ANT_CONFIG, OUTPUT); // pinMode(14, OUTPUT);
  digitalWrite(WIFI_ANT_CONFIG, HIGH); // digitalWrite(14, HIGH); // Use external antenna
}

Battery Usage​

The XIAO ESP32C6 series features a built-in power management chip, allowing it to be powered independently by a battery or to charge the battery through its USB port.

For connecting a battery to your XIAO, we recommend using a qualified rechargeable 3.7V lithium battery. When soldering the battery, carefully distinguish between the positive and negative terminals. The negative electrode pad should be located on the left side near the silk screen marking "D8," while the positive electrode pad should be located on the right side near the silk screen marking "D5."

caution:

When using battery power, no voltage will be present on the 5V pin.

Red Indicator Light

The XIAO ESP32C6 has a red indicator light for battery charging, similar to the XIAO ESP32S3:

The red light behavior for the XIAO ESP32C6 is as follows:

• When no battery is connected:

  • The red light turns on when the Type-C cable is connected and turns off after 30 seconds.

• When a battery is connected and the Type-C cable is plugged in for charging:

  • The red light flashes.

• When the battery is fully charged via the Type-C connection:

  • The red light turns off.

Reading Battery Voltage​

To monitor the battery voltage on the XIAO ESP32C6, similar to the XIAO ESP32C3, you'll need to solder a 200k resistor in a 1:2 configuration. This setup reduces the voltage by half, allowing safe monitoring through the A0 analog port.