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Forum Index : Microcontroller and PC projects : ARMmite H7 "CIN" specifics

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PhenixRising
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Joined: 07/11/2023
Location: United Kingdom
Posts: 858
Posted: 07:30pm 09 Feb 2024
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Both the F4 and H7 manuals state:

  Quote  The COUNTING pins can also count the number of pulses on their input. When a pin is configured as a
counter (for example, SETPIN PE3,CIN) the counter will be reset to zero and Armmite will then count every
transition from a low to high voltage. The counter can be reset to zero again by executing the SETPIN
command a second time (even though the input was already configured as a counter).
The response to input pulses is very fast and the Armmite can count pulses as narrow as 10 nS . The frequency
response depends on the load on the processor (i.e., the number of counting inputs and if serial or I
2C
communications is used). It can be as high as 800 kHz with no other activity but is normally about 300 kHz.


They are both the same?

Has anyone pushed these counters to determine what they are reliably capable of?

I understand that the high-speed counter isn't available on the 100-pin H7. These are just the regular pins.
 
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