D C B A 电源 电源端子&拨码开关 电源压降芯片：5V转3.3V JP1 2 1 Header 2 卧式拨动开关_创思 SW1 4 VIN 4 VCC_USB 312 VIN VCC_5V 由拨码开关选择是USB供电还是电池供电 VCC_5V 1 2 3 U1 EN GND LX RT8059GJ5 L1 2.2UH R1 54.9K 1% FB VIN 5 4 VCC_5V C2 10UF C1 10UF R2 249K 1% VCC_3.3V TVS&LED VCC_5V VCC_3.3V D1 6V8 D2 TVS VCC_3.3V R3 1K D3 R RELAY&DHT11 VCC_5V U6 1 2 PC817 R37 100R R38 22R D9 LED STM32_PC1_RELAY C23 104 RELAY VCC_5V R39 1K 4 3 R40 22R D10 4148 Q1 NPN RELAY 2 1 3 RELAY_NC RELAY_COM RELAY_NO RELAY_NC RELAY_COM RELAY_NO RE 1 2 3 Header 3 VCC_5V 4 RELAY 5 Relay_5V STM32_MINI_SYSTEM PC13 STM32_PC14 STM32_PC15 STM32_OSC_IN STM32_OSC_OUT STM32_NRESET PC0 STM32_PC1_RELAY STM32_PC2_BC_3.3V_PSM_EINT PC3 STM32_PA2_USART2_TX STM32_PA3_USART2_RX STM32_PA4_LCD_RESET STM32_PA5_SPI1_SCK STM32_PA6_SPI1_MISO STM32_PA7_SPI1_MOSI STM32_PC4_485_EN STM32_PB0_LCD_BL STM32_PB1_LCD_DC STM32_PB10_USART3_TX STM32_PB11_USART3_RX PA0 PA1 PC5 PB2 VCC_3.3V VCC_3.3V VCC_3.3V VCC_3.3V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 U2 VBAT PC13-TAMPER-RTC PC14-OSC32_IN PC15-OSC32_OUT OSC_IN OSC_OUT NRST PC0/ADC123_IN1/I2C3_SCL PC1/ADC123_IN2/I2C3_SDA PC2/ADC123_IN3/SPI2_MISO PC3/ADC123_IN4/SPI2_MOSI VSSA/VREF- VDDA/VREF+ PA0-WKUP/UART4_TX/ADC12_IN5/TIM2_CH1/TIM5_CH1/TIM8_ETR/TIM2_ETR/USART2_CTS PA1/UART4_RX/ADC12_IN6/TIM2_CH2/TIM5_CH2/TIM15_CH1/USART2_RTS_DE PA2/USART2_TX/SPI1_SCK/ADC12_IN7/TIM2_CH3/TIM2_ETR/TIM8_CH1N PA3/USART2_RX/ADC12_IN8/TIM2_CH4/TIM5_CH4/TIM5_CH2 VSS_4 VDD_4 PA4/ADC12_IN9/SPI1_NSS/SPI3_NSS/USART2_CK PA5/SPI1_SCK/ADC12_IN10/TIM2_CH1/TIM2_ETR/TIM8_CH1N PA6/SPI1_MISO/ADC12_IN11/TIM1_BKIN/TIM3_CH1/TIM8_BKIN/USART3_CTS/TIM1_BKIN_COMP2/TIM16_CH1 PA7/SPI1_MOSI/ADC12_IN12/TIM1_CH1N/TIM3_CH2/TIM8_CH1N/TIM17_CH1 PC4/USART3_TX/ADC12_IN13 PC5/USART3_RX/ADC12_IN14 PB0/ADC12_IN15/TIM1_CH2N/TIM3_CH3/TIM8_CH2N/USART3_CK PB1/ADC12_IN16/TIM1_CH3N/TIM3_CH4/TIM8_CH3N/USART3_RTS_DE PB2/COMP1_INP/I2C3_SMBA PB10/USART3_TX/SPI2_SCK/I2C2_SCL/TIM2_CH3/ PB11/USART3_RX/I2C2_SDA/TIM2_CH4 VSS_1 VDD_1 STM32L VDD_3 VSS_3 PB9/I2C1_SDA/CAN1_TX/SPI2_NSS/IR_OUT/TIM4_CH4/SDMMC1_D5 PB8/I2C1_SCL/CAN1_RX/TIM4_CH3/SDMMC1_D4 BOOT0 PB7/USART1_RX/I2C1_SDA/UART4_CTS/TIM4_CH2/TIM8_BKIN/TIM8_BKIN_COMP1/TIM17_CH1N PB6/USART1_TX/I2C1_SCL/TIM4_CH1/TIM8_BKIN2/TIM8_BKIN2_COMP2/TIM16_CH1N PB5/SPI3_MOSI/SPI1MOSI/USART1_CK/UART5_CTS/I2C1_SMBA/TIM3_CH2 PB4/JNTRST/SPI3_MISO/SPI1_MISO/USART1_CTS/UART5_RTS_DE/TIM3_CH1/TIM17_BKIN PB3/SPI1_SCK/SPI3_SCK/JTDO-TRACESWO/TIM2_CH2/USART1_RTS_DE PD2/UART5_RX/USART3_RTS_DE/TIM3ETR/SDMMC1_CMD PC12/UART5_TX/SPI3_MOSI/USART3_CK/SDMCC1_CK PC11/UART4_RX/USART3_RX/SPI3_MISO/SDMMC1_D3 PC10/UART4_TX/USART3_TX/SPI3_SCK/SDMMC1_D2 PA15/JTDI/SPI3_NSS/SPI1_NSS/TIM2_CH1/TIM2_ETR/UART4_RTS_DE PA14/JTCK-SWCLK VDD_2 VSS_2 PA13/JTMS-SWDIO/IR_OUT/OTG_FS_NOE PA12/CAN1_TX/OTG_FS_DP/USART1_RTS_DE/TIM1_ETR PA11/CAN1_RX/OTG_FS_DM/TIM1_CH4/TIM1_BKIN2/USART1_CTS/TIM1_BKIN2_COMP1 PA10/USART1_RX/OTG_FS_ID/TIM1_CH3/TIM17_BKIN PA9/USART1_TX/OTG_FS_VBUS/TIM1_CH2/TIM15_BKIN PA8/TIM1_CH1/USART1_CK/OTG_FS_SOF PC9/TIM3_CH4/TIM8_CH4/TIM8_BKIN2/OTG_FS_NOE/SDMMC1_D1 PC8/TIM3_CH3/TIM8_CH3/SDMMC1_D0 PC7/TIM3_CH2/TIM8_CH2 PC6/TIM3_CH1/TIM8_CH1 PB15/SPI2_MOSI/TIM1_CH3N/TIM8_CH3N/TIM15_CH2 PB14/SPI2_MISO/I2C2_SDA/TIM1_CH2N/TIM8_CH2N/USART3_RTS_DE PB13/SPI2_SCK/I2C2_SCL/USART3_CTS/TIM1_CH1N PB12/TIM1_BKIN/TIM1_BKIN_COMP2/I2C2_SMBA/SPI2_NSS/USART3_CK 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 STM32_PB9_8266_RESET STM32_PB8_DHT11 STM32_BOOT0 STM32_PB7_8266_GPIO0 PB6 STM32_PB5_KEY STM32_PB4_KEY STM32_PB3_KEY PD2 PC12 PC11 PC10 PA15 PA12 PA11 STM32_PA14_JTCK STM32_PA13_JTMS STM32_PA10_USART1_RX STM32_PA9_USART1_TX STM32_PA8_LED STM32_PC9_LED STM32_PC8_LED STM32_PC7_BC26_POWER STM32_PC6_BC26_RESRE_IO PB15 PB14 PB13 PB12 STM32_PB8_DHT11 4 3 2 1 DHT11 GND NC DQ VCC DHT11&DS18B20 VCC_3.3V R42 1K VCC_3.3V VCC_3.3V OSC_8M STM32_OSC_IN 2 R4 1M Y1 12M STM32_OSC_OUT 1 C9 22PF C10 22PF BOOT SWD RESET VCC_3.3V R5 10K STM32_NRESET RST SW C11 104 LED 退耦 VCC_3.3V C3 104 C4 104 C5 104 C7 104 C8 104 C6 104 KEY S2 SW S3 SW S4 SW STM32_PB5_KEY R1310K STM32_PB4_KEY R14 10K STM32_PB3_KEY R6 10K VCC_3.3V VCC_3.3V VCC_3.3V SWD STM32_PA13_JTMS STM32_PA14_JTCK 1 2 3 3_PIN VCC_3.3V R19 360R R20 360R VCC_485 8 7 6 5 VCC B A GND 485_B 485_A R33 NC 485_A 485_B 1 2 485 2_PIN U3 RO RE DE DI SP3485 LCD&TFT R7 R41 STM32_PA6_SPI1_MISO STM32_PA4_LCD_RESET STM32_PB1_LCD_DC STM32_PB0_LCD_BL STM32_PA7_SPI1_MOSI STM32_PA5_SPI1_SCK 1K 1K 1 2 3 4 5 6 7 8 LCD 8_PIN STM32_PA8_LED STM32_PC9_LED STM32_PC8_LED D4 D5 B BD6 B VCC_3.3V R9 1K R11 1K R12 1K BC20 VCC_5V VCC_3.3V BC20 VCC_5V GND RXD TXD POWKEY_IO PSM GND RXD_DBG TXD_DBG RESET_IO BC20核心板 BC20_RXD BC20_TXD STM32_PC7_BC26_POWER 1 2 3 4 5 USB 串口切换 FT232_RXD STM32_PA9_USART1_TX 0R 485_RXD R18 1 3 5 SW5 2 4 6 R17 0R FT232_TXD STM32_PA10_USART1_RX 485_TXD 创思贴片两档 拨码开关 STM32_PB10_USART3_TX GPS_RXD WIFI_RXD R16 0R SW6 1 3 5 2 4 6 GPS_TXD R15 WIFI_TXD 0R STM32_PB11_USART3_RX 创思贴片两档 拨码开关 BC20_TXD BC20_RXD R23 0R R240R STM32_PA3_USART2_RX STM32_PA2_USART2_TX CBUS0 CBUS1 PL_DN PL_DP VCC_FT232 3.3VOUT 6 7 PL_DP PL_DN R31 0R R32 0R 5 4 3 2 1 1 S GND NC DP DM VBUS USB1 2 S VCC_USB 4 S 3 S 9 8 FT232_RXD FT232_TXD VCC_5V FT232_TTL 1 2 3 4 Header 4 PB6 PB2 PA0 PB12 PB14 PB15 STM32_PC14 PA11 PD2 PC11 PC10 GPIO 1 3 5 7 9 11 13 15 17 19 21 Header 11X2 2 4 6 8 10 12 14 16 18 20 22 PC5 PA1 PC3 PB13 PC0 STM32_PC15 PC13 PA12 PC12 PA15 BOOT0 1 2 3 创思\拨码开关 VCC_3.3V R431K STM32_BOOT0 R8 10K USART3_485 485_TXD STM32_PC4_485_EN 485_RXD FT232 FT232 VCC_IO R26 NC R27 0欧 VCC_FT232 3.3VOUT VCC_FT232 VCC_IO 3.3VOUT C19 104 C20 104 C21 104 + C22 10UF/16V FT232_TXD VCC_IO FT232_RXD 1 2 3 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 VCC_IO VCC_IO R28 1K R29 1K D8 D7 LED LED CBUS0 CBUS1 VCC_USB R30 0R VCC_FT232 GPIO: U4 TXD DTR# RTS# VCCIO RXD RI# GND NC DSR# DCD# CTS# CBUS4 CBUS2 CBUS3 FT232 OSC0 OSC1 TEST AGND NC CBUS0 CBUS1 GND VCC RESET# GND 3V3OUT USBDM USBDP 28 27 26 25 24 23 22 21 20 19 18 17 16 15 FT232只有在USB插上时才有电 USB功能：数据通信、供电口 STM32_PC2_BC_3.3V_PSM_EINT 10 9 8 7 6 GPS_RXD GPS_TXD STM32_PC6_BC26_RESRE_IO WIFI WIFI_TXD R35 R34 4.7K STM32_PB9_8266_RESET 1K 1 2 3 4 VCC_3.3V U5 UTXD CH_PD GPIO16 VCC GND GPIO2 GPIO0 URXD ESP8266_1 8 7 6 5 R36 WIFI_RXD NC STM32_PB7_8266_GPIO0 D C B A Title Size A0 Date: File: Number Revision 27-Apr-2019 G:\开发板设计\BC20核心板在雷工 基础上面改2019.4.9\BC20核心板在雷工 基础上面改2019.4.9\2019040999SEipps\STM32L~3.DDB Sheet of Drawn By: