1122334455667788DDCCBBAA**********2018/3/1911:43:34E:\DreamSpark\ArduinoSeries\WIFI_Kit_8\导出原理图.SchDocTitleSize:Number:Date:File:Revision:SheetofTime:A3VDDA1LNA2VDD3P33VDD3P34VDD_RTC5TOUT6CHIP_EN7EPD_DCDC8MTMS9MTDI10VDDPST11MTCK12MTDO13GPIO214GPIO015GPIO416VDDPST17SD_DATA_218SD_DATA_319SD_CMD20SD_CLK21SD_DATA_022SD_DATA_123GPIO524U0RXD25U0TXD26XTAL_OUT27XTAL_IN28VDDD29VDDA30RES12K31EXT_RSRB32GND33U2ESP8266EXGND10pFC110pFC2!CS!1!HOLD!(D3)7!WP!(D2)3GND4SCK6SI(D0)5SO(D1)2VCC8U3W25Q32FVSSGND3.3V1uFC9GND5.6pFC6E1AntennaL1NCL2NCGNDGNDGND3.3V10uFC70.1uFC81uFC4GNDURXDUTXDGNDR112KGPIO5GPIO12GPIO13GPIO14GPIO15GPIO2GPIO0GPIO4GPIO16CHIP_ENADC_INGNDGND+5VCTSDTRD_ND_PRTSGNDGND+5VDTRGPIO0NRSTRTSGPIO15GPIO0NRST1uFC51uFC3+5VR210KGNDGNDR1010KR1410KR8220KR7100KGNDGNDGND2.2uFC14R1510KR1310KR1210K3.3V#RST9#SUSPEND15CTS18D+3D-4DCD24DSR22DTR23GND2GPIO0/TXLED14GPIO1/RXLED13GPIO212GPIO311NC10REGIN7RI1RTS19RXD20SUSPEND17TXD21VBUS8VDD6VIO5VPP16CP2104VIO: 1.8-VDDGND0U1CP2104UTXDURXDNRSTC2P1C2N2C1P3C1N4VBAT5NC6VSS7VDD8RES9SCL10SDA11IREF12VCOMH13VCC14JP1OLED_0.91_I2C_14Pin1uFC101uFC11390KR9GND2.2uFC130.1uFC12390KR610KR510KR4GNDRST_OLEDSDASCLGNDGND3.3V+5VGNDGNDGND3.3V+5VGNDURXDUTXDGPIO0GPIO2GPIO4GPIO5A0GPIO12GPIO13GPIO14GPIO15GPIO16NRSTCTSDTR123456789101112JP2Header 12123456789101112JP3Header 12CHIP_ENCHIP_EN12Y126MGNDBCET2S9014BCET1S9014+5VR181KD2LED0VBATR1710K10uFC18GNDGNDSTAT1VSS2VBAT3VDD4PROG5U5MIC7383112JP4Header 2GNDGNDGNDD_ND_PGND3.3VIN1GND2EN3NC4OUT5U4AP2112-3.31uFC1610uFC1512D11N58191uFC17+5VVBAT12345USB1Header 5S1RESETS2BTN-0GND3.3VNRSTR1910KGPIO0+5V0.1uFC19GNDA1ESP8266 & 0.91 Inch OLED displayCP2104Programming LogicHeader & Key3.3V LDOCharging circuitR17 = 10K I = 100mAR17 = 5K I = 200mAR17 = 2K I = 500mAR17 = 1K I = 1ALED0Blink -- Power onBright -- ChargingShut down -- Charging overHeltec Automationwww.heltec.cn