When I calibrate the HSI frequency of an STM32F7 writing to HSITRIM in RCC_CR register, which is the calibration step? I mean, how much the frequency of HSI change if increasing or decreasing HSITRIM in 1?
Doing the same with an STM32F0, ref. manual specify that the calibration step is 40khz, but STM32F7 ref. manual doesn't specify anything.
Also, is it true that in STM32F0 the calibration step is 40khz? In the datasheet, in chapter electrical characteristics it only says that "HSI user trimming step" is max 1%. It doesn't give the typical value, and 1% is 80khz, not 40. For the STM32F7 the same: it only says max 1%.
The actual models I'm using are STM32F072, STM32F091 and STM32F745.
