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Espressif ESP32 User Guide

Espressif ESP32
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Disclaimer and Copyright Notice
Information in this document, including URL references, is subject to change without notice.
THIS DOCUMENT IS PROVIDED AS IS WITH NO WARRANTIES WHATSOEVER, INCLUDING ANY
WARRANTY OF MERCHANTABILITY, NON-INFRINGEMENT, FITNESS FOR ANY PARTICULAR
PURPOSE, OR ANY WARRANTY OTHERWISE ARISING OUT OF ANY PROPOSAL,
SPECIFICATION OR SAMPLE. All liability, including liability for infringement of any proprietary
rights, relating to use of information in this document is disclaimed. No licenses express or
implied, by estoppel or otherwise, to any intellectual property rights are granted herein.
The Wi-Fi Alliance Member logo is a trademark of the Wi-Fi Alliance.
All trade names, trademarks and registered trademarks mentioned in this document are
property of their respective owners, and are hereby acknowledged.
Copyright © 2015 Espressif Inc. All rights reserved.
Espressif IOT Team
http://bbs.espressif.com
The OEM or final integrator must ensure that FCC labeling requirements are met. This includes an
additional label on the outside of the final product housing with the following contents:
Company Name
Model:ESP32
FCC ID:2AC7Z-ESP32
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause
undesired operation.
To satisfy FCC RF Exposure requirements for this transmission devices, a separation distance of
20cm or more should be maintained between the antenna of this device and persons during
operation. To ensure compliance, operation at closer than this distance is not recommended. The
antenna(s) used for this transmitter must not be colocated or operating in conjunction with any
other antenna or transmitter.
Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
The modular transmitter must be equipped with either a permanently affixed label or must be
capable of electronically displaying its FCC identification number
(A) If using a permanently affixed label, the modular transmitter must be labeled with its own FCC
identification number, and, if the FCC identification number is not visible when the module is
installed inside another device, then the outside of the device into which the module is installed
must also display a label referring to the enclosed module. This exterior label can use wording such
as the following: “Contains Transmitter Module FCC ID: 2AC7Z-ESP32” or “Contains FCC ID:
2AC7Z-ESP32.” Any similar wording that expresses the same meaning may be used. The Grantee
may either provide such a label, an example of which must be included in the application for
equipment authorization, or, must provide adequate instructions along with the module which
explain this requirement. In the latter case, a copy of these instructions must be included in the
application for equipment authorization

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Espressif ESP32 Specifications

General IconGeneral
Clock SpeedUp to 240 MHz
SRAM520 KB
Wi-Fi802.11 b/g/n
BluetoothBluetooth v4.2 BR/EDR and BLE
GPIO Pins34
Operating Voltage2.2V to 3.6V
Operating Temperature-40°C to +125°C
ProcessorTensilica Xtensa LX6
Flash Memory4MB (varies by module)
ADC12-bit SAR ADC up to 18 channels
DAC2 channels of 8-bit DACs
I2C2 x I2C
I2S2 x I2S
InterfacesCAN 2.0
SPI4 SPI interfaces
UART3 x UART

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