stm32f103和stm32f407引脚兼容问题

不可以
The STM32F405xx and STM32F407xx devices maintain a close compatibility with the
whole STM32F10xxx family. All functional pins are pin-to-pin compatible. The
STM32F405xx and STM32F407xx, however, are not drop-in replacements for the
STM32F10xxx devices: the two families do not have the same power scheme, and so their
power pins are different. Nonetheless, transition from the STM32F10xxx to the STM32F40x
family remains simple as only a few pins are impacted.
官方说明

我查了一下stm32f103rct6（迷你版64针）和f405rg是完全兼容的

只是电源和地不太兼容，io都是兼容的