Espressif ESP32-PICO-KIT V4 USB-UART ESP32 SiP Development Board

Overview: ESP32-PICO-KIT is a mini development board produced by Espressif. At the core of this board is the ESP32-PICO-D4, a System-in-Package (SiP) module with complete Wi-Fi and bluetooth functionalities. Comparing to other ESP32 modules, the ESP32-PICO-D4 integrates several peripheral components in one single package, that otherwise would need to be installed separately. This includes a 40 MHz crystal oscillator, a 4 MB flash, filter capacitors and RF matching links in. This greatly reduces quantity and costs of additional components, subsequent assembly and testing cost, as well as overall product complexity. The development board integrates a USB-UART Bridge circuit, allowing the developers to connect the board to a PC’s USB port for downloads and debugging. For easy interfacing, all the IO signals and system power on ESP32-PICO-D4 are led out through two rows of 20 x 0.1” pitch header pads on both sides of the development board. To make the ESP32-PICO-KIT easier for Dupont wires, 2 x 17 header pads are populated with two rows of female pin headers. The remaining 2 x 3 header pads grouped on each side of the board besides the antenna are not populated, and may be populated later by the user if required. Functional Description: The following list and figure below describe key components, interfaces and controls of ESP32-PICO-KIT board. ESP32-PICO-D4 Standard ESP32-PICO-D4 module soldered to the ESP32-PICO-KIT board. The complete system of the ESP32 chip has been integrated into the SiP module, requiring only external antenna with LC matching network, decoupling capacitors and pull-up resistors for EN signals to function properly. LDO 5V-to-3.3V Low dropout voltage regulator (LDO). USB-UART Bridge A single chip USB-UART bridge: CP2102 in V4 of the board and CP2102N in V4.1. The first provides up to 1 Mbps transfer rates, while the latter up to 3 Mbps transfers rates. Micro USB Port USB interface. It functions as the power supply for the board and the communication interface between PC and ESP32-PICO-KIT. Power On LED Turns on when the power supply is applied to the board. For details see schematic in Related Documents. I/O All the pins on ESP32-PICO-D4 are broken out to the female pin headers on the board. Users can program ESP32 to enable multiple functions such as PWM, ADC, DAC, I2C, I2S, SPI, etc. For details please see section Pin Descriptions. BOOT Button Holding down the Boot button and pressing the EN button initiates the firmware download mode. Then user can download firmware through the serial port. EN Button Reset button: pressing this button resets the system. Power Supply Options: The following options are available to provide power supply to the ESP32-PICO-KIT: Micro USB port, this is default power supply connection 5V / GND header pins 3V3 / GND header pins More informations: Package includes: 1 x Development board
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