IWDG_PR register
PR | Prescaler divider. Set and reset by software. These bits are write access protected. They are written by software to select the prescaler divider feeding the counter clock. PVU bit of IWDG_SR must be reset in order to be able to change the prescaler divider. 000: divider/4 001: divider/8 010: divider/16 011: divider/32 100: divider/64 101: divider/128 110: divider/256 111: divider/256 |