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What is ESP32

ESP32 is a series of low-cost, low-power system on a chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth. The ESP32 series employs either a Tensilica Xtensa LX6 microprocessor in both dual-core and single-core variations, Xtensa LX7 dual-core microprocessor or a single-core RISC-V microprocessor and includes built-in antenna switches, RF balun, power amplifier, low-noise receive amplifier, filters, and power-management modules. ESP32 is created and developed by Espressif Systems, a Chinese company based in Shanghai, and is manufactured by TSMC using their 40 nm process. It is a successor to the ESP8266 microcontroller.

Features

Features of the ESP32 include the following:

The ESP32 Platform

Processors:

CPU: Xtensa dual-core (or single-core) 32-bit LX6 microprocessor, operating at 160 or 240 MHz and performing at up to 600 DMIPS

Ultra low power (ULP) co-processor

Memory: 520 KiB RAM, 448 KiB ROM

Wireless connectivity:

Wi-Fi: 802.11 b/g/n

Bluetooth: v4.2 BR/EDR and BLE (shares the radio with Wi-Fi)

Peripheral interfaces:

34 × programmable GPIOs

12-bit SAR ADC up to 18 channels

2 × 8-bit DACs

10 × touch sensors (capacitive sensing GPIOs)

4 × SPI

2 × I²S interfaces

2 × I²C interfaces

3 × UART

SD/SDIO/CE-ATA/MMC/eMMC host controller

SDIO/SPI slave controller

Ethernet MAC interface with dedicated DMA and planned IEEE 1588 Precision Time Protocol support

CAN bus 2.0

Infrared remote controller (TX/RX, up to 8 channels)

Pulse counter (capable of full quadrature decoding)

Motor PWM

LED PWM (up to 16 channels)

Ultra low power analog pre-amplifier

Security:
IEEE 802.11 standard security features all supported, including WPA, WPA2, WPA3 (depending on version)[5] and WLAN Authentication and Privacy Infrastructure (WAPI)

Secure boot

Flash encryption

1024-bit OTP, up to 768-bit for customers

Cryptographic hardware acceleration: AES, SHA-2, RSA, elliptic curve cryptography (ECC), random number generator (RNG)

Power management:

Internal low-dropout regulator

Individual power domain for RTC

5 μA deep sleep current

Wake up from GPIO interrupt, timer, ADC measurements, capacitive touch sensor interrupt

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