M5Stack-ATOM Development Board
Code name: M5Stack_ATOM
M5Stack-ATOM development board is based on esp32 microcontroller and uses xtensa architecture. This board has a maximum CPU frequency of 240 MHz and a flash size of 4MB.
About M5Stack-ATOM
Ultra-compact ESP32 board with RGB LED and button — ideal for simple wireless triggers and automation nodes.
Technical Specifications
🛰️ Connectivity
🧠 Microcontroller
✨ Features
- 40 digital IO pins
- 16 external interrupt pins
- 16 analog input pins
- 14 PWM pins
M5Stack-ATOM Pinout
M5Stack-ATOM Pins Mapping Arduino IDE
Below you can find the M5Stack-ATOM pinout. This development board provides 40 digital IO pins, out of which 16 can be used as external interrupt pins, 16 as analog input pins and 14 pins have Pulse-Width Modulation (PWM).
| Pin | Analog | Touch | PWM | Other |
|---|---|---|---|---|
| 0 | G0 | |||
| 1 | PWM | TX | ||
| 3 | PWM | RX | ||
| 9 | PWM | G9 | ||
| 10 | PWM | G10 | ||
| 12 | PWM | G12 | ||
| 19 | PWM | G19 SS | ||
| 21 | PWM | G21 | ||
| 22 | PWM | G22 SCK | ||
| 23 | PWM | G23 MISO | ||
| 25 | PWM | G25 DAC1 | ||
| 26 | PWM | RXD2 SDA G26 DAC2 | ||
| 27 | PWM | G27 | ||
| 32 | PWM | TXD2 SCL G32 | ||
| 33 | PWM | G33 MOSI | ||
| 35 | ADC1 | |||
| 36 | G36 ADC2 | |||
| 37 | G37 | |||
| 39 | G39 |
Default Tools
| 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 B) |
| Maximum data size | 320 Kb (327680 B) |
The M5Stack-ATOM development board by default uses esptool_py uploader tool, esp_ota network uploader tool for Over-the-air (OTA) uploads and esptool_py bootloader tool. The bootloader starts at address "0x1000". Flash mode and boot mode for M5Stack-ATOM development board by default is dio and dio respectively.
