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HRTIMER input frequency

Uwe Bonnes
Principal III

Can the HRTIMER input frequeny be lower than the maximum value given in the datasheets? E.g. on a G74 with HRTIMER input at 125 MHz, steps would be nice 250 ps versus 188.2... ps at 170 MHz.

The functional description "HRTIM timer is made of a digital kernel clocked at 170 MHz followed by delay lines. " is a strong hint that only one frequency fits, but some confirmation is welcome.

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4 REPLIES 4
waclawek.jan
Super User

See AN4539, Table 3. HRTIM input frequency operating range.

JW

Uwe Bonnes
Principal III

These values belong in the datasheet and not hidden in some AN!

waclawek.jan
Super User

Well, I agree, but I guess, these are "typical" values, and not guaranteed by testing.

As you've might be already aware, I'm not ST.

JW

Uwe Bonnes
Principal III

I knoe you are "not ST". I should have addressed

@Imen DAHMEN (ST Employee)​

explicit.