Real-time hardware capabilities of 5340 and 52833

[Pret]

Hi

Evaluating nRF5340 and 52833 devices for our product prototype. Besides of BT functions we need to support certain real-time hardware capabilities such as very narrow duty-cycle PWM and counting time between events triggered externally (by IOs).

In terms of PWM the performance required can be as tight as 0.1% duty cycle with about 1kHz frequency while time counting means counters running from the external OSC (or after some internal pre-scaler).

Bearing in mind the BT-related real-time protocol maintenance, can the single-core 52833 also support the such PWM operation on IOs (outputting pulses with such PWM) and also operating counters between events triggered by IO ? Or this kind of application would be better supported by 5340 thanks to dual-core ?

Thanks in advance

Alex

[Pret]

Thank you Elnar

Just to make sure I get your points as intended, when you say CPU do you mean an external CPU to the nRF52 device to configure the nRF52 device for the operation (counter mode as you mentioned)? If so, would the 5340's application core be useful for that?

Same about the PWM case, when you say using CPU - would the 5340 app core serve this?

I'm just trying to get the idea whether our application can be served by a single-core nRF chip bearing in mind the regular BT stack operation and that PWM or time-between-events counting features, or this is not something that can be handled in hardware due to BT protocol real-time workload and we need either a separate controller on board or nRF5340 utilizing its app core..

[Pret]

Thank you very much, Einar. Very helpful indeed