<High speed internal oscillator trimming>一文中:写到
Initial calibration data, INIT_TRIM, are stored in the protected part of the internal memory
and loaded onto the internal calibration register after reset.
说到INIT_TRIM在复位时自动对HSI校验,INIT_TRIM是存在一个被护的区域,不知这个区域是不是在0x4880~0x48ff之间,若是就好了:P