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ESP32 is a series of low-cost, low-power system-on-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, an Xtensa LX7 dual-core microprocessor, or a single-core RISC-V microprocessor and includes built-in antenna switches, RF balun, power amplifier, low-noise ...
Digital I/O with PWM (pins) Analog input (pins) Analog output pins Arduino Nano ESP32 [3] u-blox NORA-W106 (ESP32-S3) up to 240 MHz minimal 45 mm × 18 mm [ 1.8 in × 0.7 in ] USB-C 3.3 V 16MB 384 512 14 5 8 Arduino Uno WiFi rev 2 [4] ATMEGA4809, NINA-W132 Wi-Fi module from u-blox, ECC608 crypto device 16 MHz Arduino / Genuino
Digital I/O (pins) Digital I/O with PWM (pins) Analog input (pins) Analog output pins Arduino / Genuino MKR1000 Arduino Yes ATSAMW25 (made of SAMD21 Cortex-M0+ 32 bit ARM MCU, WINC1500 2.4 GHz 802.11 b/g/n Wi-Fi, and ECC508 crypto device ) 48 MHz minimal 61.5 mm x 25 mm USB 3.3 V 256 No 32 8 12 7 1 Announced: April 2, 2016 Arduino 101 [1]
(Previously, the height of the two Wi-Fi blocks was smaller than the height of the Bluetooth blocks.) Fixed formatting of the "elaboration information" in the Xtensa LX6 microprocessor block. Added descriptive text to diagram's title for conveying what the ESP32 is (it's a Wi-Fi & Bluetooth microcontroller) for clarity.
A GPIO pin's state may be exposed to the software developer through one of a number of different interfaces, such as a memory-mapped I/O peripheral, or through dedicated IO port instructions. Some GPIOs have 5 V tolerant inputs: even when the device has a low supply voltage (such as 2 V), the device can accept 5 V without damage.
Early microcontrollers often have some pins that can only act as an input, other pins that can only act as a push–pull output, and a few pins that can only act as an open collector input/output. A typical modern microcontroller has many three-state general-purpose input/output pins that can be programmed to act as any of those kinds of pins.
This may occur when the device uses a different instruction set, or if the device has a multiplexer attached to a pin (which, for example, may allow the switching of the pin between being driven as GPIO or by an A/D) and that multiplexer selects, by default, a different input source than is selected on the device being replaced.
Two months later, the project expanded to include an open-hardware platform when developer Huang R committed the gerber file of an ESP8266 board, named devkit v0.9. [14] Later that month, Tuan PM ported MQTT client library from Contiki to the ESP8266 SoC platform, [ 15 ] and committed to NodeMCU project, then NodeMCU was able to support the ...