The core processor moduleESP32 WROOM - 32Provides a complete set of 802.11 b/g/n/e/I wireless local area network (WLAN) and bluetooth 4.2 solution, a small physical size.This chip designed for low power consumption and mobile electronic devices, wearable and iot devices designed to slice used all of WLAN and bluetooth function, has the features of low cost and good layout.ESP32 WROOM - 32At the same time provides an open platform, support users the flexibility to customize the function, used in different application scenarios.

ESP32 WROOM - 32Function block diagram

ESP32 WROOM - 32Is a WiFi and bluetooth system-on-a-chip (SoC), is a leading industry of the rf performance, low power and highly integrated advantage.ESP32 WROOM - 32 integrates the function of complete transmitting/receiving radio frequency, including the antennaPass, rf balun, power amplifier, low noise amplifier, filter, power management module and the advanced since the calibration circuit.Since the calibration circuit realizes the dynamic automatic adjustment to eliminate the defect of external circuit.ESP32 WROOM - 32with2a32A,LX6 CPU,Frequency as high as240 MHZ, the use of7Grade pipeline architecture.ESP32 WROOM - 32Also integrates rich analog sensor and digital interface.

ESP32 WROOM - 32Of ultra low power radio frequency architecture and power-saving technology patents increased the practical application of battery life.

ESP32 WROOM - 32Fully comply with WiFi 802.11 b/g/n/e/I and bluetooth 4.2 standard, integrated with WiFi/bluetooth/BLE and low power consumption of the radio frequency technology, and real-time operating systems that support the open RTOS.ESP32 WROOM - 32 integrated adjustment of the cache to help improve system performance and optimize the system storage.Flexible architecture allows the user to the RAM/ROM division is customized to meet the special requirements and usage.

ESP32 WROOM - 32Can be used as a standalone application or the host MCU from the device.As from the device, ESP32 WROOM - 32 - through the SPI/SDIO or I2C/provide WiFi and bluetooth UART interface.

2, product characteristics,

2.1 WiFi1.WiFi

• 802.11 b/g/n/e/I

• 802.11 n(2.4 GHz), speed up150 Mbps

• 802.11 e:QoSThe mechanism of wireless multimedia technology

WMM - PS, UAPSD

A. - MPDUandA - MSDUFrame polymerization

•Piece of reply

•Fragmentation and restructuring

• BeaconAutomatic monitoring/scan

• 802.11 IAuthentication and security features:It passes

•supportWPA/connected/Connected to the Enterprise/WPSencryption

•Basic structural network (Infrastructure BSS)StationPatterns /SoftAPmodel

• wi-fi Direct(Peer-to-peer (P2P)),Peer-to-peer (P2P)To find,Peer-to-peer (P2P) GOPatterns andPeer-to-peer (P2P)Power management

• UMACompatibility and certification

•Antenna diversity and choice

2.2bluetooth2bluetooth

•bluetoothv4.2A complete standard, including traditional bluetooth (BR/EDRBluetooth () and low power consumptionBLE)
•Support the standardThe Class 1,Class 2andClass 3Without external power amplifier
•To strengthen the power of control
•The output power up to +10 DBM
• NZIFThe receiver is- 98 DBMtheBLEReceiving sensitivity
•Adaptive frequency hopping (AFH)
•Based on theSDIO/SPI/UARTThe standard of the interfaceHCI
•Speed up to4 MBPSThe high speedUARTHCI
•supportBT4.2 controllerandhostProtocol stack
•The service discovery protocol (SDP)
•General access application (GAP)
•The safety management protocol (SMP)
•Low power consumption of the bluetooth
• ATT/GATT
• HID
•Can support all based onGATTLow power consumption bluetooth application
• SPP - LikeLow power consumption bluetooth data passthrough protocol
• BLEBeacon
• A2DP/AVRCP/SPP, HSP/HFP, RFCOMM
• CVSDandSBCAudio codec algorithm
•Bluetooth piconet (PiconetNetwork () and scatteringScatternet)

2.3 the CPUAnd storage

• Xtensa ® 32 - bit LX6Dual-core processor, computing capacity is up to600 DMIPS

• 448 KByte ROM

• 520 KByte SRAM

• RTCIn the16 KByte SRAM

• QSPIHow can connect4aFlash/SRAM, eachFlashMaxfor16 MBytes

•The power supply voltage:2.2 Vto3.6 V

2.4The clock and timer

•built-in8 MHzOscillator, support from the calibration

•built-inRCOscillator, support from the calibration

•Support external2 MHzto40 MHzThe crystals

•Support external32 kHzCrystals, are used toRTCSince the calibration and support

• 2A timer groups, each group includes2aThe 64 - bitGeneral timer and1A main system watchdog

•With subsecond precisionRTCThe timer

• RTCGuard dog

2.5A peripheral interface

• 12 - bit SAR ADCAs many as18A channel
• 2a8 - bit D/Aconverter
• 10A touch sensors
•The temperature sensor
4,aSPI
• 2aI2S
• 2aI2C
• 3aUART
1,aThe Host SD/eMMC/SDIO
1,aSlave SDIO/SPI
•With specialDMAThe EthernetMACInterface, supportThe IEEE 1588
• CAN 2.0
IR,(TX/RX)
•The motorPWM
• LED PWMAs many as16A channel
•Hall sensor
•Ultra-low power consumption front analog amplifier

2.6Security mechanism6.Security mechanism

•Support allThe IEEE 802.11Security features, includingWFA,WPA/connectedandWAPI
•Safe launch
• Flashencryption

, a 1024 - bit OTPAs much as, available to the user768 bits
•Encryption hardware accelerator:

- AES
- the HASH(SHA - 2) library
- RSA
- ECC
-Random number generator (RNG)

2.7application

•Common low power consumptionIoTThe sensorHub

•Common low power consumptionIoTrecorder
•The camera's video streaming transmission
• OTTTV box/set-top boxes
•Music player
-Network music player
-Audio streaming devices
• wi-fitoy
-counter
-Toy lost; preventer
• wi-fiThe speech recognition device
•headset
•Intelligent electrical outlet
•Home automation
• Meshnetwork
•Industrial wireless control
•The baby monitor
•Wearable electronic products
• wi-fiLocation-aware devices

•securityIDThe label

•Health care
-Movement monitoring and alarm
-Temperature recorder

3,ESP32 WROOM - 32Main parameters module

3.2The interface definition

ESP32 WROOM - 32Pin function definition

ESP32 WROOM - 32Boot mode configuration

3.3Shapes and sizes

ESP32 WROOM - 32The appearance of the module size is18 mm * 25.50 mm * (2.8 + / - 0.1) mm(as shown).Module is the capacity of 4 MB, encapsulated in the WSOP SPI Flash - 8.3 class: : dbi module is using the PCB antenna.