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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ESP8684 датащи(PDF) 36 Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD. |
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ESP8684 датащи(HTML) 36 Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD. |
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36 / 60 page  4 Functional Description 4.2 Peripherals This section describes the chip’s peripheral capabilities, covering connectivity interfaces and on-chip sensors that extend its functionality. 4.2.1 Connectivity Interface This subsection describes the connectivity interfaces on the chip that enable communication and interaction with external devices and networks. 4.2.1.1 UART Controller The UART Controller in the ESP8684 chip facilitates the transmission and reception of asynchronous serial data between the chip and external UART devices. It supports two UART interfaces. Feature List • Full-duplex asynchronous communication • Configurable baud rate, up to 2.5 Mbaud • Automatic baud rate detection of input signals • Data frame format: – a START bit – data bits, ranging from 5 ~ 8 – a parity bit – stop bits, whose length can be 1, 1.5, or 2 bits • Special character AT_CMD detection • Supported protocols: RS485, IrDA • UART as wake-up source • Software and hardware flow control • Three clock sources that can be divided: – 40 MHz PLL_F40M_CLK – internal fast RC oscillator RC_FAST_CLK – external crystal clock XTAL_CLK • 512 x 8-bit RAM shared by TX FIFOs and RX FIFOs of the two UART controllers For details, see ESP8684 Technical Reference Manual > Chapter UART Controller (UART, LP_UART). Pin Assignment For UART, the pins used can be chosen from any GPIOs via the GPIO Matrix. For more information about the pin assignment, see Section 2.3 IO Pins and ESP8684 Technical Reference Manual > Chapter IO MUX and GPIO Matrix. Espressif Systems 35 Submit Documentation Feedback ESP8684 Series Datasheet v2.0 |
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