Timing model restrictions for high level components

TOD - Interrupt each 1/4 second is not available.
TPM - It is not possible to select interrupt after 1 tick of the counter, because of hardware restrictions. At least 2 ticks must be used.
MTIM1 as a shared prescaler - On some derivatives MTIM1 can be used as a clock-source for other timers. This feature allows you to select large range of timing; even the timing model does not support all combinations of the MTIM1 prescaler and the modulo register.