ESP32 C6 Zero Mini

Development Board

Code name: TINYC6

ESP32C6 ZERO

ESP32 C6 Zero Mini is a development board based on the ESP32C6 microcontroller using RISCV32 architecture.

This board features a maximum CPU frequency of 160 MHz and 4MB flash memory.

About ESP32 C6 Zero Mini

Minimal ESP32-C6 board with RISC-V and modern wireless - ideal for cost-sensitive, compact Matter-based builds.

Where to Buy ESP32 C6 Zero Mini

Starting from

10$ per unit

Amazon.com Ships worldwide

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Technical Specifications

Complete technical specification details for ESP32 C6 Zero Mini

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 4MB

Architecture riscv32

✨ Features & Pins

• ESP32-C6FH4: Built-in dual processors, main frequency is up to 160 MHz
• USB Type-C Port for downloading programme and debugging
• ME6217C33M5G low dropout LDO, 800mA (Max)
• WS2812 RGB LED
• 2.4G ceramic antenna
• BOOT button: Press it and then press the RESET button to enter download mode
• RESET button
• ESP32-C6FH4 pins

Download Full Datasheet

Quick Setup

Copy-paste configs for ESP32 C6 Zero Mini - auto‑generated from this board's exact hardware specs.

ESP32C6 160 MHz 4MB QIO RISC-V

In Arduino IDE 2 select Tinyc6 from the esp32 by Espressif package. In PlatformIO use board = esp32-c6-devkitc-1. ESP32C6 · 160 MHz · 4MB · QIO · RISC-V.

Tools menu settings

Board (select in Arduino IDE) Tinyc6

CPU Frequency 160 MHz

Flash Size 4MB

Flash Mode QIO

Upload Speed 921600

Architecture RISC-V

In Arduino IDE 2, open Boards Manager, search "esp32" by Espressif and install it. Then go to Tools → Board and select "Tinyc6" for the ESP32 C6 Zero Mini.

platformio.ini


[env:esp32-c6-zero-mini]
platform  = espressif32
board     = esp32-c6-devkitc-1
framework = arduino

; Exact hardware config for ESP32 C6 Zero Mini
board_build.mcu        = esp32c6
board_build.f_cpu      = 160000000L
board_build.flash_size = 4MB
board_build.flash_mode = qio
board_upload.flash_size = 4MB

The board value is a close generic match - check PlatformIO board registry for an exact fit.

esp32: block (YAML)


esp32:
  board: esp32-c6-devkitc-1
  framework:
    type: arduino   # or "esp-idf"

# ESP32 C6 Zero Mini - 160 MHz ESP32C6
# Flash: 4MB | USB: N/A

Paste into your device's .yaml. See ESPHome ESP32 docs for full options.

esptool.py - flash command


esptool.py \
  --chip esp32c6 \
  --baud 921600 \
  write_flash \
    --flash_mode qio \
    --flash_size 4MB \
    0x0 bootloader.bin \
    0x8000    partitions.bin \
    0xe000    boot_app0.bin \
    0x10000   firmware.bin

Install: pip install esptool - replace firmware.bin with your binary - bootloader at 0x0

ESP32 C6 Zero Mini Pinout Diagram

Complete pin reference for ESP32 C6 Zero Mini

Safe Pins to Use

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

IO0

IO1

IO2

IO3

IO14

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
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 ESP32 C6 Zero Mini

Board Datasheet

Technical specifications

ESP32C6 Datasheet

Microcontroller reference

ESP32 C6 Zero Mini Custom Pin Mapping

Pin configuration and GPIO mapping for ESP32 C6 Zero Mini

Digital I/O Pins

Interrupt Pins

Analog Inputs

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, LED
15	IO9	GP9	BIDIRECTIONAL	GPIO, BOOT
16	IO12	GP12	BIDIRECTIONAL	GPIO
17	IO13	GP13	BIDIRECTIONAL	GPIO
18	IO14	GP14	BIDIRECTIONAL	GPIO
19	IO15	GP15	BIDIRECTIONAL	GPIO
20	IO18	GP18	BIDIRECTIONAL	GPIO
21	IO19	GP19	BIDIRECTIONAL	GPIO
22	IO20	GP20	BIDIRECTIONAL	GPIO
23	IO21	GP21	BIDIRECTIONAL	GPIO
24	IO22	GP22	BIDIRECTIONAL	GPIO
25	IO23	GP23	BIDIRECTIONAL	GPIO

Legend

Function Pin role

GPIO ESP32 pin

I/O Direction

# Pin number

Pin Mappings

Complete pinout and GPIO mapping for ESP32 C6 Zero Mini

Digital I/O Pins

Interrupt Pins

Analog Inputs

Pin	Analog	Touch	Other
1	A0	T1
2	A1	T2
3	A2	T3
4	A3	T4	VBAT_SENSE
5	A4	T5
6	A5	T6	SDA
7	A6	T7	SCL
8	A7	T8
9	A8	T9
10			VBUS_SENSE
16			TX
17			RX
18			SS
19			SCK
20			MISO SDI
21			MOSI SDO
22			RGB_PWR
23			RGB_DATA
RGB_BUILTIN			LED_BUILTIN

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 ESP32 C6 Zero Mini

Setting	Value
Bootloader tool	esptool_py
Uploader tool	esptool_py
Network uploader tool	esp_ota
Bootloader address	`0x0`
Flash mode	qio
Boot mode	qio
Maximum upload size	1280 KB (1310720 bytes)
Maximum data size	320 KB (327680 bytes)