Which edges does this counter count?

Question

This board has two counter inputs.

But is there a way to figure out whether the counter counts each rising or falling edges? Rising or falling edges?

score 3 · Accepted Answer · answered Jul 24 '18 at 12:18

3

From the datasheet:

The CTR0 and CTR 1 terminals are 32 -bit event counters that can accept frequency inputs up to 20MHz. The internal counter increments when the TTL levels transition from low to high.

answered Jul 24 '18 at 12:18

Long Pham

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Oh great catch I missed that part. – floppy380 Jul 24 '18 at 12:21
Btw the ground of the counter input(TTL level input) be connected to AGND or digital ground? – floppy380 Jul 24 '18 at 12:23
Either will do. AGND is intended for separating digital noise from digital side so, you shouldn't use AGND. – Long Pham Jul 24 '18 at 13:38

Which edges does this counter count?

1 Answers1