1122334455667788DDCCBBAATitleNumberRevisionSizeA3Date:2018/9/4Sheet ofFile:E:\工作文档\..\Nodemcu V3-340原理图.SchDocDrawn By:esp8266GPIO16nRSTENGPIO0GPIO2R412kR1012kR312kGNDVDD3V3GPIO15R512kMTDOENGPIO0GPIO2GPIO15GNDVDD3V3ADCGPIO14GPIO12GPIO13TXD0RXD0GPIO4GPIO5MTCKMTDIMTMSMATTERS NEEDING ATTENTIONOn every boot/reset/wakeup,GPIO15 MUST keep LOW, GPIO2 MUST keep HIGH.GPIO0 HIGH ->RUN MODE, LOW -> FLASH MODE.When you need to use the sleep mode,GPIO16 and RST should be connected,and GPIO16 will output LOW to reset the system at the time of wakeup.+C2100uF TAJB107M006RNJGNDnRSTR812kC1100nFGNDRST1ADC/TOUT2EN3GPIO16/WAKE4GPIO14/HSPICLK5GPIO12/HSPIQ6GPIO13/HSPID/CTS0/RXD27VDD8GND15GPIO15/HSPICS/RTS0/TXD216GPIO2/TXD117GPIO0/SPICS218GPIO419GPIO520GPIO3/RXD021GPIO1/SPICS1/TXD022SPI_MOSI/SD_CMD9SPI_MISO/SD_D010GPIO9/SD_D211GPIO10/SPI_CS/SD_D312SPI_INT/SD_D113SPI_CLK/SD_CLK14U2ESP_12_EVDD3V3SPI_MOSISPI_MISOGPIO9GPIO10SPI_INTSPI_CLKUSB&UARTGNDGNDD_ND_PR1470TXD0RXD0VCC1D-2D+3ID4GND5MH16MH27MH38MH49U3USB_Micro_5S_BnRSTGPIO0C6100nFVDDUSBC510uFVT2S8050VT1S8050R1112kR1412kVDDUSBOTG_IDAUTO PROGRAM CIRCUITDTR RTS RST GPIO0 1 1 1 1 0 0 1 1 1 0 0 1 0 1 1 0DTRRTSDCD1RI2GND3D+4D-5VDD6REGIN7VBUS8RST9NC10SUSPEND11SUSPEND12NC13NC14NC15NC16NC17NC18NC19NC20NC21NC22CTS23RTS24RXD25TXD26DSR27DTR28GND29U1CP2102D_PD_NVDD3V3DCDRIGNDDTRDSRRTSCTSGNDGNDGNDACTIVEC4100nFC310uFGNDPOWERVDD5VVDDUSBGND/ADJ1VOUT2VIN3U4NCP1117ST33T3GVDD5VVDD3V3GNDC810uFGNDGNDC710uF 25VD11N5819/SS14/S4(SOD_323)GPIO16nRSTENGPIO14GPIO12GPIO13GPIO0GPIO2GPIO15TXD0RXD0GPIO4GPIO5TXD2RXD2TXD1ADC_EXADCPIN11PIN22PIN33PIN44PIN55PIN66PIN77PIN88PIN99PIN1010PIN1111PIN1212PIN1313PIN1414PIN1515J1THT_Male_P_1x15PIN11PIN22PIN33PIN44PIN55PIN66PIN77PIN88PIN99PIN1010PIN1111PIN1212PIN1313PIN1414PIN1515J2THT_Male_P_1x15GPIO3VUGPIO1HSPICLKHSPIQHSPIDHSPICSD0D1D2D3D4D5D6D7D8D9D10A0VDD3V3GNDVDD3V3GNDVINGNDVDD3V3GNDGPIO10SPI_INTSPI_CLKSPI_MOSISPI_MISOGPIO9SD_CLKSD_D0SD_CMDSD_D1SD_D3SD_D2D12D11VDDUSBIO-PINGPIO16R2470R60(NC)VDD3V3GNDS1KEY_RST/USERnRSTR7470R9470GNDS2KEY_FLASHGPIO0LED1BLUEUse this resistor only in sleep modeThis LED SHOULD BLUE or WHITE to make sure enough voltage dropADCR12220k(1%)R13100k(1%)GNDADC_EXUse 1% resistor here.KEYADCNodemcu v3-CH340 sch