The upper limit of incoming signal frequency when using NRF_TIMER1 as counter

[diode]

I am using NRF_TIMER1 with 16-bit mode and prescaler of 0 as a counter, to count the pulses of an incoming square wave signal in a given time window. What is the upper limit of the incoming frequency for NRF_TIMER1 acting stably?

[Susheel Nuguru]

what do you mean by incoming frequency when in counter mode? are you talking about the frequency of counter task ?

[diode]

@Aryan: I meant the frequency of the incoming square wave signal to be counted by the NRF_TIMER1. I have updated the description of the question accordingly.

[Susheel Nuguru]

Looking at the image below

The count task is sampled with the frequency of Ftimer Hz. With prescaler = 0, Ftimer = 16MHz. So Timer module should be able to count upto this limit.