2024年1月15日发(作者：)

STM32F103RCT6引脚功能及使用脚号111213引脚名称VBATPC13-TAMPER-RTCPC14-OSC32_INPC15-OSC32_OUTOSC_INOSC_OUTNRSTPC0PC1PC2PC3VSSAVDDA主功能VBATPC13PC14PC15OSC_INOSC_OUTNRSTPC0PC1PC2PC3VSSAVDDA默认复用--TAMPER-RTCOSC32_INOSC32_OUT------ADC123_IN10ADC123_IN11ADC123_IN12ADC123_IN13----WKUPUSART2_CTS重定义--------CAN_RXCAN_TX--------------备注说明1说明3说明3说明3晶振晶振复位ADCADCADCADC模拟地模拟电说明4说明514PA0-WKUPPA0ADC123_IN0TIM2_CH1_ETRTIM5_CH1TIM8_ETRUSART2_RTS--说明615PA1PA1ADC123_IN1TIM2_CH2TIM5_CH2USART2_TX--16PA2PA2ADC123_IN2TIM2_CH3TIM5_CH3USART2_RX--1718PA3VSS_4PA3VSS_4ADC123_IN3TIM2_CH4TIM5_CH4------数字地第1页共5页

1920VDD_4PA4VDD_4PA4--USART2_CKADC12_IN4SPI1_NSSDAC_OUT1ADC12_IN5----数字电21PA5PA5SPI1_SCKDAC_OUT2ADC12_IN6--22PA6PA6TIM3_CH1TIM8_BKINSPI1_MISOADC12_IN7TIM1_BKIN23242526PA7PC4PC5PB0PA7PC4PC5PB0TIM3_CH2TIM8_CH1NSPI1_MOSIADC12_IN14ADC12_IN15ADC12_IN8TIM3_CH3TIM8_CH2NADC12_IN9TIM1_CH1N----TIM1_CH2N272829303132PB1PB2PB10PB11VSS_1VDD_1PB1PB2BOOT1PB10PB11VSS_1VDD_1TIM3_CH4TIM8_CH3N--USART3_TXI2C2_SCLUSART3_RXI2C2_SDA----USART3_CKTIM1_BKINTIM1_CH3N--TIM2_CH3TIM2_CH4----数字地数字电33PB12PB12SPI2_NSSI2C2_SMBAI2S2_WS--说明7第2页共5页

USART3_CTS34PB13PB13TIM1_CH1NSPI2_SCKI2S2_CKUSART3_RTS35PB14PB14TIM1_CH2NSPI2_MISOTIM1_CH3N36PB15PB15SPI2_MOSII2S2_SDTIM8_CH137PC6PC6I2S2_MCKSDIO_D6TIM8_CH2N383940414243PC7PC8PC9PA8PA9PA10PC7PC8PC9PA8PA9PA10I2S3_MCKSDIO_D7TIM8_CH3NSDIO_D0TIM8_CH4SDIO_D1USART1_CKTIM1_CH1MCOUSART1_TXTIM1_CH2USART1_RXTIM1_CH3USART1_CTS44PA11PA11TIM1_CH4USBDMCAN_RXUSART1_RTS45PA12PA12JTMSSWDIOTIM1_ETRUSBDPCAN_TX46PA13--PA13----------TIM3_CH3TIM3_CH4TIM3_CH2TIM3_CH1说明8------第3页共5页

4748495051525354VSS_2VDD_2PA14PA15PC10PC11PC12PD2VSS_2VDD_2JTCKSWCLKJTDIPC10PC11PC12PD2------SPI3_NSSI2S3_WSUART4_TXSDIO_D2UART4_RXSDIO_D3UART5_TXSDIO_CKUART5_RXTIM3_ETRSDIO_CMDSPI3_SCK----PA14PA15TIM2_CH1_ETRSPI1_NSSUSART3_TXUSART3_RXUSART3_CK--PB3TIM2_CH2SPI1_SCKTRACESWOPB4TIM3_CH1SPI1_MISOTIM3_CH2SPI1_MOSIUSART1_TXUSART1_RX--I2C1_SCLCAN_RXI2C1_SDACAN_TX--数字地数字电55PB3JTDOI2S3_CK56PB4NJTRSTSPI3_MISOSPI3_MOSI5758596061PB5PB6PB7BOOT0PB8PB5PB6PB7BOOT0PB8I2C1_SMBAI2S3_SDTIM4_CH1I2C1_SCLTIM4_CH2I2C1_SDA--TIM4_CH3SDIO_D4TIM4_CH4626364PB9VSS_3VDD_3PB9VSS_3VDD_3SDIO_D5----数字地数字电第4页共5页

说明：1)VBAT：VBAT给RTC和备份区域供电，目的是在VDD断电时保证相关区域的数据内容有效，一般连接到外部电池。若不用此功能，可直接连接到VDD。2)供电方案：Ø每个VDD各接一个0.1uF陶瓷电容，VDD3需要再接一个4.7~10uF的钽电容；ØVDDA：10nF陶瓷电容+1nF钽电容；ØVREF+：可接VDDA，也可接外部参考源，此时，需要接10nF陶瓷电容+1nF钽电容；3)PC13/PC14/PC15：内部连接了模拟开关，只能通过少量的电流，驱动能力不够（不能用于点亮LED），且不能同时使用，尽量不用。4)PA0-WKUP引脚上的上升沿，进入待机模式之后，作为待机模式唤醒条件。5)USART/UART：CTS/RTS/CK/TX/RX，一般只使用TX/RX引脚实现异步通信，加上CK可以实现同步通信，CTS/RTS是硬件流控引脚，一般不用。6)TIMER：TIM1~TIM8，其中，TIM1/TIM8为高级控制定时器，TIM2~TIM5为普通定时器，TIM6/TIM7为基本定时器。ØTIM1/TIM8：BKIN为故障信号，用来关闭TIM1的输出，ETR为外部触发输入引脚，可用来对脉冲计数，CH1~CH4为4路输入捕获/PWM输出信号，CH1/CH1N/CH2/CH2N/CH3/CH3N为三相电机控制信号，带N为反向信号。ØTIM2~TIM5：ETR功能同上，CH1~CH4功能同上；ØTIM6~TIM7：无外部引脚与其相连，只有定时器功能。7)I2S：I2S2/I2S3与SPI2/SPI3共用三个引脚，WS/NSS，CK/SCK，SD/MOSI，MCK与MISO不共用，I2S时序与SPI类似。8)SDIO：一般应用，只使用4根数据线（D0~D3）以及CMD/CK，分别代表控制线/时钟线。第5页共5页