脚位管脚名称类型I/O电平 主功能默认复用功能1PE2I/OFTPE2TRACECK/FSMC_A232PE3I/OFTPE3TRACED0/FSMC_A193PE4I/OFTPE4TRACED1/FSMC_A204PE5I/OFTPE5TRACED2/FSMC_A215PE6I/OFTPE6TRACED3/FSMC_A226VBATS-VBAT7PC13-TAMPER-RTC(4)I/O-PC13 (5)TAMPER-RTC8PC14-OSC32_IN(4)I/O-PC14 (5)OSC32_IN9PC15-OSC32_OUT(4)I/O-PC15 (5)OSC32_OUT10VSS_5S-VSS_511VDD_5S-VDD_512OSC_INI-OSC_IN13OSC_OUTO-OSC_OUT14NRSTI/O-NRST复位15PC0I/O-PC0ADC123_IN1016PC1I/O-PC1ADC123_IN1117PC2I/O-PC2ADC123_IN1218PC3I/O-PC3ADC123_IN1319VSSAS-VSSA20VREF-S-VREF-21VREF+S-VREF+22VDDAS-VDDA23PA0-WKUPI/O-PA0WKUP/USART2_CTS (7)ADC123_IN0TIM2_CH1_ETRTIM5_CH1/TIM8_ETR24PA1I/O-PA1USART2_RTS (7)ADC123_IN1/TIM5_CH2/TIM2_CH2 (7)25PA2I/O-PA2USART2_TX (7) /TIM5_CH3/ADC123_IN2/TIM2_CH3 (7)26PA3I/O-PA3USART2_RX (7) /TIM5_CH4ADC123_IN3/TIM2_CH4 (7)27VSS_4S-VSS_428VDD_4S-VDD_429PA4I/O-