ESP32-C3-MINI-1 Development Board
User Manual
ESP32-C3-MINI-1
ESP32-C3-MINI-1U
Development Board
ESP32-C3-MINI-1 Development Board
Disclaimer and Copyright Notice
Information in this document, including URL addresses for reference, is subject to change without notice. Documentation is provided “as is” without warranty of any kind, including any warranties of merchantability, fitness for a particular purpose, or non-infringement, and any warranties referred to elsewhere in any proposal, specification or sample. No responsibility is assumed in this document, including any liability for infringement of any patent rights arising out of the use of the information in this document. This document does not hereby grant, by estoppel or otherwise, any license, express or implied, to use any intellectual property rights.
The test data obtained in this article are all obtained by the Byte laboratory test, and the actual results may be slightly different. All trade names, trademarks and registered trademarks mentioned herein are the property of their respective owners and are hereby acknowledged.
Ebyte Electronic Technology Co., Ltd.
Note :
Due to product version upgrade or other reasons, the contents of this manual may be changed.
Byte Electronic Technology Co., Ltd. reserves the right to modify the contents of this manual without any notice or prompt. This manual is only used as a guide . Chengdu Byte Electronic Technology Co., Ltd. does its best to provide accurate information in this manual. However, Chengdu Kbyte Electronic Technology Co., Ltd. does not ensure that the contents of the manual are completely error-free. All statements in this manual , information and advice do not create any express or implied warranties.
Overview
1.1 Product introduction
ESP32-C3-MINI-1-TB and ESP32-C3-MINI-1U-TB are two entry-level development boards for developing and testing small-sized ESP32-C3-MINI-1 & ESP32-C3-MINI-1U modules.
This group of development boards has complete Wi-Fi and Bluetooth low energy functions, and most of the pins of the modules on the board have been led out to the pin headers on both sides. Developers can easily connect various peripherals through jumpers according to actual needs. The device can also be used by plugging the development board into the breadboard.
1.2 Parameters
| NO. | Name | Value | Notes |
| 1 | Support module | ESP32-C3-MINI-1 ESP32-C3-MINI-1U | WiFi serial module |
| 2 | Module size | 38.91 * 25.4mm | Including USB connector |
| 3 | Production Process | Lead-free process, machine sticker | Wireless products must be machine-mounted to ensure batch consistency and reliability |
| 4 | Power supply interface | USB | – |
| 5 | Communication Interface | TTL | – |
| 6 | Operating temperature | -40 ~ +85℃ | Industrial grade |
| 7 | Working humidity | 10% ~ 90% | Relative humidity, non-condensing |
| 8 | Storage temperature | -40 ~ +125℃ | Industrial grade |
Components introduction
2.1 Components and interfaces
2 Main component diagram
| No. | Name | Functions |
| 1 | ESP32-C3-MINI-1 & ESP32-C3-MINI-1 U | ESP32-C3-MINI-1 & ESP32-C3-MINI-1 U are general-purpose Wi-Fi and Bluetooth low energy dual-mode modules with PCB onboard antennas. This module integrates the ESP32-C3FN4 chip with 4 MB embedded flash. Since the flash is directly packaged in the chip, the ESP32-C3-MINI-1 module has a smaller package size. |
| 2 | 5V to 3.3V LDO | Power converter, input 5 V, output 3.3 V. |
| 3 | 5 V power indicator | This indicator lights up when the board is connected to USB power. |
| 4 | Pin | All available GPIO pins (except the flash’s SPI bus) have been routed to the board’s pin headers. Please see pin headers for more information. |
| 5 | Boot key | Download button. Hold down the Boot key and press the Reset key to enter the “Firmware Download” mode, and download the firmware through the serial port. |
| 6 | Micro-USB interface | USB interface. It can be used as the power supply for the development board or as the communication interface between the PC and the ESP32-C3FN4 chip. |
| 7 | Reset key | Reset button. |
| 8 | USB to UART bridge | Single-chip USB to UART bridge providing transfer rates up to 3 Mbps. |
| 9 | RGB LED | Addressable RGB LED, driven by GPIO8. |
Note: For specific function instructions, please refer to the user manual of ESP32-C3-MINI-1 &
2.2 Pin Definition
The following positive illustration shows the ESP32-C3-MINI-1-TB as an example:
Current test interface diagram
| NO. | Name | Type | Functions |
| GND | G | ground | |
| 2 | 3V3 | P | 3.3V power supply |
| 3 | 3V3 | P | 3.3V power supply |
| 4 | IO2 | I/O/T | GPIO2, ADC1_CH2, FSPIQ |
| 5 | IO3 | I/O/T | GPIO3, ADC1_CH3 |
| 6 | GND | G | ground |
| 7 | RST | I | CHIP_PU |
| 8 | GND | G | ground |
| 9 | IO1 | I/O/T | GPIO1, ADC1_CH1, XTAL_32K_N |
| 10 | IO1 | I/O/T | GPIO1, ADC1_CH1, XTAL_32K_N |
| 11 | IO10 | I/O/T | GPIO10, FSPICS0 |
| 12 | GND | G | ground |
| 13 | 5V | P | 5V power supply |
| 14 | 5V | P | 5V power supply |
| 15 | GND | G | ground |
| 16 | GND | G | ground |
| 17 | IO19 | I/O/T | GPIO19 |
| 18 | IO18 | I/O/T | GPIO18 |
| 19 | GND | G | ground |
| 20 | IO4 | I/O/T | GPIO4, ADC1_CH4, FSPIHD, MTMS |
| 21 | IO5 | I/O/T | GPIO5, ADC2_CH0, FSPIWP, MTDI |
| 22 | IO6 | I/O/T | GPIO6, FSPICLK, MTCK |
| 23 | IO7 | I/O/T | GPIO7, FSPID, MTDO |
| 24 | GND | G | ground |
| 25 | IO8 | I/O/T | GPIO8, RGB LED |
| 26 | IO9 | I/O/T | GPIO9 |
| 27 | GND | G | ground |
| 28 | RX | I/O/T | GPIO20, U0RXD |
| 29 | TX | I/O/T | GPIO21, U0TXD |
| 30 | GND | G | ground |
Notes:
- P: power supply ; I: input; O: output; T: can be set to high impedance.
- GPIO2, GPIO8, and GPIO9 are the strapping pins of the ESP32-C3FN4 chip. During chip power-on and system reset, the strapping pin controls the chip function according to the binary voltage value of the pin. For the specific description and application of the strapping pins, please refer to the chapter on strapping pins in the ESP32-C3 chip manual .
- The power supply mode is Micro-USB interface power supply (default), 5V and GND pin header power supply, 3V3 and GND pin header power supply.
2.3 Function introduction
ESP32-C3-MINI-1-TB&ESP32-C3-MINI-1U-TB The main components and connection methods are shown in the following diagram:
Program Burning Guide
- Before powering on, make sure the ESP32-C3-MINI-1-TB & ESP32-C3-MINI-1U-TB are intact.
- Tools to prepare: ESP32-C3-MINI-1-TB or ESP32-C3-MINI-1U-TB, USB 2.0 cable (Standard A to Micro-B , computer -Windows, Linux or macOS. Please make sure to use Appropriate USB cables, some cables are for charging only, not for data transfer and programming.
- Connect the USB data cable, and burn the program from computer software;
Revision History
| Version | revision date | Revision Notes | Name |
| 1.0 | 2022-10-27 | initial version | Hao |
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Copyright ©2012, Chengdu Byte
Electronic Technology Co.,Ltd.
Documents / Resources
 | EBYTE ESP32-C3-MINI-1 Development Board [pdf] User Manual ESP32-C3-MINI-1 Development Board, ESP32-C3-MINI-1, Development Board, Board |
 | EBYTE ESP32-C3-MINI-1 Development Board [pdf] User Manual ESP32-C3-MINI-1 Development Board, ESP32-C3-MINI-1, Development Board, Board |
