Espressif ESP32 User Guide

1. Introduction
1. Introduction
1.1.
ESP32
ESP32 provides a Wi-Fi solution in the 2.4GHz band by using 40nm technology. It delivers
highly integrated Wi-Fi SoC solution to meet the continuous demands for efficient power
usage, compact design and reliable performance.
You can use ESP32 series hardware and software provided by Espressif to develop and
program some useful Wi-Fi and wearable electronics applications and products in Internet of
Things(IoT) industry.
1.2.
Requirements
Before getting started to run and develop firmware applications on your ESP32, there are
some hardware and software requirements.
1.2.1.
Hardware
•
An ESP32 development board or ESP-WROOM-03(build-in ESP32).
•
A USB TTL Serial cable or a Micro-USB cable.
•
Debian GNU/Linux OS on an x86 machine.
Notes：
1.
We assume to use the Debian or Ubuntu Linux OS. You may make some modifications for the
other Linux OS.
2.
For more information about ESP-WROOM-03, refer to “ESP-WROOM-03 Specification".
Espressif
2015.12
Confidential

Espressif ESP32 Specifications

General

Clock Speed	Up to 240 MHz
SRAM	520 KB
Wi-Fi	802.11 b/g/n
Bluetooth	Bluetooth v4.2 BR/EDR and BLE
GPIO Pins	34
Operating Voltage	2.2V to 3.6V
Operating Temperature	-40°C to +125°C
Processor	Tensilica Xtensa LX6
Flash Memory	4MB (varies by module)
ADC	12-bit SAR ADC up to 18 channels
DAC	2 channels of 8-bit DACs
I2C	2 x I2C
I2S	2 x I2S
Interfaces	CAN 2.0
SPI	4 SPI interfaces
UART	3 x UART