ESP32 Development Board WiFi+Bluetooth Ultra-Low Power Consumption Dual Cores (ESP-WROOM-32) ESP-32S Board (Yellow pin welding)
Introduction:
ESP32 is already integrated antenna and RF balun, power amplifier, low-noise amplifiers, filters,
and power management module. The entire solution takes up the least amount of printed circuit board area.
This board is used with 2.4 GHz dual-mode Wi-Fi and bluetooth chips by TSMC 40nm low power technology,
power and RF properties best, which is safe, reliable, and scalable to a variety of applications.
Features:
- High performance-price ratio
- Small volume, easily embeded to other products
- Strong function with support LWIP protocol, Freertos
- Supporting three modes: AP, STA, and AP+STA
- Supporting Lua program, easily to develop
ESP-WROOM-32 is a general-purpose Wi Fi+BT+BLE MCU module with powerful functions and wide applications. It can be used in low-power sensor networks and demanding tasks, such as voice coding, audio streaming and MP3 decoding.
The core of this module is the ESP32-D0WDQ6 chip *, which is scalable and adaptive. The two CPU cores can be individually controlled or powered on. The clock frequency can be adjusted from 80 MHz to 240 MHz. The user can cut off the power supply of the CPU and use the low-power coprocessor to constantly monitor the status changes of peripherals or whether some analog quantities exceed the threshold. ESP32 also integrates a wealth of peripherals, including capacitive touch sensors, Hall sensors, low-noise sensor amplifiers, SD card interfaces, Ethernet interfaces, high-speed SDIO/SPI, UART, I2S and I2C.
CPU and memory
ESP32-D0WDQ6 has two built-in low-power Xtensa ® 32-bit LX6 MCU。 On chip storage includes:
• 448 KB ROM for program startup and kernel function calls.
• 520 KB on-chip SRAM for data and instruction storage.
• 8 KB SRAM in RTC, that is, RTC slow memory, can be accessed by the coprocessor in deep sleep mode.
• 8 KB SRAM in RTC, that is, RTC fast memory, can be used for data storage and access by the main CPU when RTC starts in deep sleep mode.
• 1 kbit eFuse, of which 256 bits are dedicated to the system (MAC address and chip settings); The remaining 768 bits are reserved for user applications, including Flash encryption and chip ID.
• ESP-WROOM-32 integrates 4MB SPIFlash
 
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