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???????STM32??????????

????

STM32??????????????????????????????????????????2.0~3.6V????????????1.8V????????

Vdda?Vssa???Vdd?Vss?????????????????????????????????Vdd?Vss???????????Vref+?Vref-????ADC????????????????????????Vdda?Vssa???

Vbat?????????????PC13~PC15??????????Vdd??????????????Vbat???????????????????????RTC???

??????????????

?????????PVD?????Vdd??????????????????????????????

?????????????????????CPU???????????????????????????????????

??

Cortex-M3???????????

STM32F10???????????

?????????????????Vdd?Vbat?????????

??????????????????????????Vdd?Vbat????????

??

STM32F10X??????????????????????????SYSCLK??HIS?PLLCLK?HSE???????????

HSI?????8MHz RC?????????????PLL?????HSE?HSI??????????????SYSCLK?LSE????RTC???????LSI?????????????

HSE??????????????????25MHz?HSI???????HSICAL?HSITRIM?

???????????HSI??PLL?HSE???????????????????PLL???????????????

RTC?????HSE/128?LSE?LSI????????????

IWDG???LSI????????????????

STM32F4XX????

?????HSI?????????HSE??PLL????PLL?????????????SYSCLK?????STM32F427??????????????????PLL???

????

• PLL???PLLM???PLLN???PLLP???PLLQ????????????????SYSCLK???
• ?????APB1?APB2??????????????
• ??????????????????????????????????????

??????????????????

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