M5Stack-Core-ESP32

Development Board

Code name: M5Stack_Core_ESP32

ESP32 M5STACK

M5Stack-Core-ESP32 is a development board based on the ESP32 microcontroller using XTENSA architecture.

This board features a maximum CPU frequency of 240 MHz and 16MB flash memory.

About M5Stack-Core-ESP32

Modular ESP32 development kit with display and case - perfect for rapid IoT and UI-based prototyping.

Technical Specifications

Complete technical specification details for M5Stack-Core-ESP32

Display

Type LCD

Size 2.0"

Resolution 320x240

Driver ILI9342C

USB

Type USB-C

Connectivity

WiFi 802.11 b/g/n (2.4 GHz)

Bluetooth 4.2

BLE 4.2

Microcontroller

Model esp32

Clock Speed 240 MHz

Flash Size 16MB

SRAM 520KB

Architecture xtensa

✨ Features & Pins

Digital IO 20

Analog Input 16

PWM 16

Interrupts 16

Quick Setup

Copy-paste configs for M5Stack-Core-ESP32 - auto‑generated from this board's exact hardware specs.

ESP32 240 MHz 16MB DIO Xtensa

In Arduino IDE 2 select M5stack Core Esp32 from the esp32 by Espressif package. In PlatformIO use board = esp32dev. ESP32 · 240 MHz · 16MB · DIO.

Tools menu settings

Board (select in Arduino IDE) M5stack Core Esp32

CPU Frequency 240 MHz

Flash Size 16MB

Flash Mode DIO

Upload Speed 921600

Architecture Xtensa

In Arduino IDE 2, open Boards Manager, search "esp32" by Espressif and install it. Then go to Tools → Board and select "M5stack Core Esp32" for the M5Stack-Core-ESP32.

platformio.ini


[env:m5stack-core-esp32]
platform  = espressif32
board     = esp32dev
framework = arduino

; Exact hardware config for M5Stack-Core-ESP32
board_build.mcu        = esp32
board_build.f_cpu      = 240000000L
board_build.flash_size = 16MB
board_build.flash_mode = dio
board_upload.flash_size = 16MB

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

esp32: block (YAML)


esp32:
  board: esp32dev
  framework:
    type: arduino   # or "esp-idf"

# M5Stack-Core-ESP32 - 240 MHz ESP32
# Flash: 16MB | USB: USB-C

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

esptool.py - flash command


esptool.py \
  --chip esp32 \
  --baud 921600 \
  write_flash \
    --flash_mode dio \
    --flash_size 16MB \
    0x1000 bootloader.bin \
    0x8000    partitions.bin \
    0xe000    boot_app0.bin \
    0x10000   firmware.bin

Install: pip install esptool - replace firmware.bin with your binary - bootloader at 0x1000

M5Stack-Core-ESP32 Pinout Diagram

Complete pin reference for M5Stack-Core-ESP32

Useful Links

Datasheets and resources for M5Stack-Core-ESP32

ESP32 Datasheet

Microcontroller reference

Pin Mappings

Complete pinout and GPIO mapping for M5Stack-Core-ESP32

Digital I/O Pins

Interrupt Pins

Analog Inputs

PWM Pins

Pin	PWM	Other
0		G0
1	PWM	TX G1
2	PWM	G2
3	PWM	RX G3
5	PWM	SS G5
12	PWM	G12
13	PWM	G13
15	PWM	G15
16	PWM	RXD2 G16
17	PWM	TXD2 G17
18	PWM	SCK G18
19	PWM	MISO G19
21	PWM	SDA G21
22	PWM	SCL G22
23	PWM	MOSI G23
25	PWM	G25 DAC1
26	PWM	G26 DAC2
34		G34
35		G35 ADC1
36		G36 ADC2

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 M5Stack-Core-ESP32

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	1280 KB (1310720 bytes)
Maximum data size	320 KB (327680 bytes)