Generating 1 nanosecond update event using Timers - AN4013

[Zaher]

According to AN4013 on using timers as time base generators, one could use a 16-bit timer to generate an update event from a nanosecond to a few minutes.

Well, take for example the STM32F429 clocked @ 180 MHz. If one cycle takes 5.56 ns, which is the fastest clock available for APB2 Timers, how to go beyond that to generate a 1 nanosecond intervals?

I know that 1 nanosecond = 32403240 CPU Ticks

Could it be done by measuring/calculating CPU Ticks?

Why I would need a timing base in the nanosecond range is beyond the scope of this question!

AN4013 for reference:

 

Zaher

[Zaher]

Thank you Clive. Well, nanosecond delays in multiple of 10s will do fine for most applications, but there are some other applications where a more tight timing is required. The text draw my attention in the AN "a nanosecond" so I wanted to confirm if there's a way to do it.