Espressif ESP32-C6-DevKitC-1

Development Board

Code name: ESP32_C6_DEVKITC_1

Espressif ESP32-C6-DevKitC-1 is a development board based on the ESP32C6 microcontroller using RISCV architecture.

This board features a maximum CPU frequency of 160 MHz and 8MB flash memory.

About Espressif ESP32-C6-DevKitC-1

The ESP32-C6-DevKitC-1 is an entry-level development board based on the ESP32-C6-WROOM-1(U) module, featuring an 8 MB SPI flash. This board integrates complete Wi-Fi 6, Bluetooth LE 5.0, Zigbee 3.0, and Thread 1.3 functionalities, making it ideal for IoT applications. It provides access to most of the I/O pins through pin headers on both sides, facilitating easy interfacing with peripherals and sensors.

Where to Buy Espressif ESP32-C6-DevKitC-1

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$10 per unit

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📋 Technical Specifications

Complete technical specification details for Espressif ESP32-C6-DevKitC-1

🛰️ Connectivity

WiFi 802.11 ax b/g/n (2.4 GHz)

Bluetooth 5.3

BLE 5.3

🧠 Microcontroller

Model esp32c6

Clock Speed 160 MHz

Flash Size 8MB

Architecture riscv

✨ Features & Pins

Digital IO 22

Analog Input 6

PWM 6

Interrupts 16

Download Full Datasheet

Espressif ESP32-C6-DevKitC-1 Pinout Diagram

Complete pin reference for Espressif ESP32-C6-DevKitC-1

The ESP32-C6-DevKitC-1 pinout offers access to multiple GPIOs and communication interfaces. Key power pins include 3.3V and GND. It features dedicated UART pins (TX, RX), I2C pins (SDA, SCL), and SPI pins (MISO, MOSI, SCK, CS), allowing integration with various peripherals. ADC pins are available for analog input applications. The board supports PWM and other digital functions, making it highly adaptable for embedded projects.

✅ Safe Pins to Use

These pins are safe for general GPIO usage without boot or system conflicts

IO0

IO1

IO2

IO3

IO10

IO11

IO20

IO21

IO22

IO23

💡 Why Are These Pins Safe?

✓ No boot sequence involvement

✓ No flash/PSRAM connections

✓ No USB or JTAG conflicts

✓ Freely assignable without issues

⚠️ Pins to Avoid or Use with Caution

Reserved for critical functions. Misuse may cause boot failures, programming issues, or system conflicts.

🔄 Strapping Pins

Boot behavior & flash voltage

🐛 JTAG Debugging

Low-level debugging interface

🔌 USB Pins

USB Serial/JTAG communication

💾 Flash/SPI Pins

Memory & PSRAM connections

📡 UART Serial

Debugging & firmware uploads

PIN	Label	Why Avoid	Type
IO4	MTMS	Used during boot; required for JTAG debugging; flash data in internal-flash models.	🛠️ Strapping
IO5	MTDI	Used during boot; required for JTAG debugging; flash data in internal-flash models.	🛠️ Strapping
IO6	MTCK	Required for JTAG debugging; connected to flash clock in internal-flash models.	🔗 JTAG
IO7	MTDO	Required for JTAG debugging; connected to flash data in internal-flash models.	🔗 JTAG
IO8	GPIO8	Determines boot mode; pulling low at reset can prevent normal boot.	🛠️ Strapping
IO9	GPIO9	Pulling low on reset forces the ESP32-C6 into download mode instead of normal boot.	🛠️ Strapping
IO12	USB_D-	Dedicated to USB communication; avoid if using USB functionality.	🔌 USB
IO13	USB_D+	Dedicated to USB communication; avoid if using USB functionality.	🔌 USB
IO15	JTAG_SEL	Controls JTAG input source at boot; avoid altering its state.	🔗 JTAG
IO16	U0TXD	Default UART0 transmit pin; using it may interfere with serial console or programming.	📡 UART
IO17	U0RXD	Default UART0 receive pin; using it may interfere with serial console or programming.	📡 UART
IO18	FSPIQ	Connected to internal flash; using as GPIO can disrupt flash operations.	⚡ Flash
IO19	FSPID	Connected to internal flash; using as GPIO can disrupt flash operations.	⚡ Flash

Useful Links

Datasheets and resources for Espressif ESP32-C6-DevKitC-1

Board Datasheet

Technical specifications

ESP32C6 Datasheet

Microcontroller reference

Espressif ESP32-C6-DevKitC-1 Custom Pin Mapping

Pin configuration and GPIO mapping for Espressif ESP32-C6-DevKitC-1

Digital I/O Pins

Interrupt Pins

Analog Inputs

PWM Pins

Pin	Function	ESP Pin	I/O Type	Description
1	5V	5V	POWER INPUT	5V power input for the board
2	GND	GND	POWER GROUND	Ground connection
3	3V3	3.3V	POWER OUTPUT	3.3V power output for peripherals
4	TX	TX	TX	TX
5	RX	RX	RX	RX
6	IO0	GP0	BIDIRECTIONAL	GPIO, ADC pin
7	IO1	GP1	BIDIRECTIONAL	GPIO, ADC pin
8	IO2	GP2	BIDIRECTIONAL	GPIO, ADC pin
9	IO3	GP3	BIDIRECTIONAL	GPIO, ADC pin
10	IO4	GP4	BIDIRECTIONAL	GPIO, ADC pin
11	IO5	GP5	BIDIRECTIONAL	GPIO, ADC pin
12	IO6	GP6	BIDIRECTIONAL	GPIO, ADC pin
13	IO7	GP7	BIDIRECTIONAL	GPIO
14	IO8	GP8	BIDIRECTIONAL	GPIO, RGB LED, BOOT, ROM
15	IO9	GP9	BIDIRECTIONAL	GPIO, BOOT
16	IO10	GP10	BIDIRECTIONAL	GPIO
17	IO11	GP11	BIDIRECTIONAL	GPIO
18	IO12	GP12	BIDIRECTIONAL	GPIO, USB_D-
19	IO13	GP13	BIDIRECTIONAL	GPIO, USB_D+
20	IO15	GP15	BIDIRECTIONAL	GPIO, JTAG
21	IO16	GP16	BIDIRECTIONAL	GPIO
22	IO17	GP17	BIDIRECTIONAL	GPIO
23	IO18	GP18	BIDIRECTIONAL	GPIO
24	IO19	GP19	BIDIRECTIONAL	GPIO
25	IO20	GP20	BIDIRECTIONAL	GPIO
26	IO21	GP21	BIDIRECTIONAL	GPIO
27	IO22	GP22	BIDIRECTIONAL	GPIO
28	IO23	GP23	BIDIRECTIONAL	GPIO

Legend

Function Pin role

GPIO ESP32 pin

I/O Direction

# Pin number

Pin Mappings

Complete pinout and GPIO mapping for Espressif ESP32-C6-DevKitC-1

Digital I/O Pins

Interrupt Pins

Analog Inputs

PWM Pins

Pin	Analog	Touch	PWM
0	A0	T0	PWM
1	A1	T1	PWM
2	A2	T2	PWM
3	A3	T3	PWM
4	A4	T4	PWM
5			PWM
6			PWM
7			PWM
8			PWM
9			PWM
10			PWM
11			PWM
12			PWM
13			PWM
14			PWM
15			PWM
16			PWM
17			PWM
18			PWM
19			PWM
20			PWM
21			PWM

Legend

A0 Analog input

T0 Touch sensor

PWM PWM capable

RX/TX Serial pins

LED Built-in LED

# Pin number

Default Tools & Configuration

Build and upload settings for Espressif ESP32-C6-DevKitC-1

Setting	Value
Bootloader tool	esptool_py
Uploader tool	esptool_py
Network uploader tool	esp_ota
Bootloader address	`0x1000`
Flash mode	dio
Boot mode	dio
Maximum upload size	2048 KB (2097152 bytes)
Maximum data size	320 KB (327680 bytes)