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cheap esp32,esp32s

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      Product Details

      2017 global cattle X (no one) IoT WiFi | ESP32 is the real body

      Preface:

      240MHZ, computing power up to 600DMIPS dual CPU core. WIFI, Bluetooth, Ethernet port, SRAM built-in 520K! .

      Dangdangdang. . . The long-awaited ESP32 IoT dedicated chip debut! Performance prices spike the world similar products, you can not humble to say. . .

      So powerful configuration, we refer to the current MCU market, the hottest ARM STM32F407 STM32F407 can only go to 168MHz single core, and today we are the protagonist of the dual-core 240MHZ, another top-level configuration of the STM32F407 SRAM only today we are the protagonist of the half! In contrast, even if the contrast CPU performance, ESP32 win STM32F407! CPU speed, memory resources are 2 times the STM32F407 big, no justice ah, no justice! And slow! This is not finished, do not forget, our biggest feature of this chip is the latest standard with WIFI Bluetooth, this. . . This. . . . Le Xin This is to enter the traditional MCU industry? .

      In short, is not the main WIFI and Bluetooth, alone with this chip is a super cost-effective CPU, running FREERTOS and UCOSII like the operating system, perfect.





      1.Product overview

      ESP-32S WiFi module is designed and developed independently by EMC Technologies. The module core processor ESP32 provides a complete 802.11 b / g / n / e / i wireless LAN (WLAN) and Bluetooth 4.2 solution with minimum physical size. Designed for low power and mobile consumer electronics, wearable and Internet of things devices, the chip integrates all the features of WLAN and Bluetooth, and features low cost and good layout. ESP32 also provides an open platform, allowing users the flexibility to customize the function for different application scenarios.



      ESP32 function block diagram

      The ESP32 is a WiFi and Bluetooth system-on-a-chip (SoC) with industry-leading RF performance, low power and high integration. The ESP32 integrates complete transmit / receive RF functions including antenna switches, RF baluns, power amplifiers, low noise amplifiers, filters, power management modules and advanced self-calibration circuitry. Self-calibration circuitry enables dynamic auto-tuning to eliminate external circuit defects. ESP32 with two 32-bit, LX6 CPU, clocked at up to 240MHz, with 7-stage pipeline architecture. ESP32 also integrates a wealth of analog sensing and digital interface.

      The ESP32's ultra-low power RF architecture and patented power-saving technology extend battery life in real-world applications.

      The ESP32 fully complies with WiFi 802.11b / g / n / e / i and Bluetooth 4.2 standards, integrates WiFi / Bluetooth / BLE radio and low power technology, and supports open real-time operating system RTOS. The tuning cache integrated in ESP32 helps improve system performance and optimize system storage. Flexible RAM / ROM partitioning architecture allows users to customize to meet special requirements and usage.

      2. The product features

      2.1 WiFi.1 WiFi

      • 802.11 b / g / n / e / i

      • 802.11n (2.4 GHz) at speeds up to 150 Mbps

      • 802.11 e: QoS mechanism for wireless multimedia technology

      • WMM-PS, UAPSD

      • A-MPDU and A-MSDU frame aggregation

      • Block replies

      • Fragmentation and reassembly

      • Beacon automatically monitors / scans

      • 802.11i security features: pre-authentication and TSN

      • Support for WPA / WPA2 / WPA2-Enterprise / WPS encryption

      • Infrastructure BSS Station mode / SoftAP mode

      • Wi-Fi Direct (P2P), P2P discovery, P2P GO mode, and P2P power management

      • UMA compliant and certified

      • Antenna diversity and selection

      2.2 Bluetooth 2 Bluetooth

      • Bluetooth v4.2 complete standard, including traditional Bluetooth (BR / EDR) and low-power Bluetooth (BLE)
      • Supports standard Class-1, Class-2 and Class-3, and requires no external power amplifiers
      • Enhanced precision power control
      • Output power up to + 10 dBm
      • The NZIF receiver has a BLE receive sensitivity of -98 dBm
      • Adaptive Frequency Hopping (AFH)
      • Standard HCI based on SDIO / SPI / UART interface
      • High-speed UART HCI up to 4 Mbps
      • Supports BT 4.2 controller and host protocol stack
      • Service Discovery Protocol (SDP)
      • Universal Access Application (GAP)
      • Security Management Protocol (SMP)
      • Low-power Bluetooth
      • ATT / GATT
      • HID
      • Supports all low-power Bluetooth-based applications based on GATT
      • SPP-Like low-power Bluetooth data transmission protocol
      • BLE Beacon
      • A2DP / AVRCP / SPP, HSP / HFP, RFCOMM
      • CVSD and SBC audio codec algorithms
      • Bluetooth Piconet (Piconet) and Scatternet (Scatternet)

      2.3 CPU and storage

      • Xtensa® 32-bit LX6 dual-core processor with up to 600 DMIPS of computing power

      • 448 KByte ROM

      • 520 KByte SRAM

      • 16 KByte SRAM in the RTC

      • Up to 4 Flash / SRAMs can be connected to the QSPI, up to 16 MBytes per Flash

      • Supply voltage: 2.2V to 3.6V

      2.4 Clock and Timer

      • Built-in 8 MHz oscillator for self-calibration

      • Built-in RC oscillator for self-calibration

      • Supports an external 2 MHz to 40 MHz crystal

      • Supports an external 32 kHz crystal oscillator for RTC and supports self-calibration

      • Two timer groups, each consisting of two 64-bit general-purpose timers and one master system watchdog

      • RTC timers with sub-second accuracy

      • RTC Watchdog

      2.5 Peripheral Interface

      • 12-bit SAR ADC with up to 18 channels
      • Two 8-bit D / A converters
      • 10 touch sensors
      • Temperature Sensor
      • Four SPIs
      • 2 I2S
      • Two I2C
      • Three UARTs
      • One Host SD / eMMC / SDIO
      • One Slave SDIO / SPI
      • Ethernet MAC interface with dedicated DMA, IEEE 1588 support
      • CAN 2.0
      • IR (TX / RX)
      • Motor PWM
      • LED PWM up to 16 channels
      • Hall sensor
      • Ultra low power preamplifier

      2.6 Security mechanisms .6 Security mechanisms

      • Supports all IEEE 802.11 security features, including WFA, WPA / WPA2, and WAPI
      • Safe start
      • Flash encryption

      • 1024-bit OTP, up to 768 bits available to the user
      • Encrypted Hardware Accelerator:

       
      - AES
          
      - HASH (SHA-2) library
          
      - RSA
          
      - ECC
          
      - Random Number Generator (RNG)

      2.7 Applications

      General purpose low power IoT sensor Hub

      • Universal Low Power IoT Recorder
      • Video streaming of the camera
      • OTT TV Box / set-top box equipment
      • music player
          
      - Network music player
          
      - Audio streaming device
      • Wi-Fi toys
          
      - Counter
          
      - Toys anti-lost device
      • Wi-Fi speech recognition devices
      • Headset
      • Smart sockets
      • Home automation
      • Mesh networks
      • Industrial wireless control
      • Baby monitor
      • Wearable electronic products
      • Wi-Fi location-aware devices

      • Security ID label

      • Healthcare
          
      - Motion monitoring and anti-drop alarm
          
      - Temperature recorder


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