SWCU193 April 2023 CC2340R2 , CC2340R5 , CC2340R5-Q1
A channel is automatically armed in compare mode by writing any value to SYSTIM.CHnVAL[31:0] DATA bit field.
Once programmed in compare mode the channel generates an event when SYSTIM time reaches the programmed value.
The SYSTIM channel generates an event immediately if the value programmed is within a certain limit in the past. This limit is 4 seconds in the past for 1 µs resolution channels. And the limit is 1 second in the past for 250 ns resolution channel.