Table 6-86 Timing Requirements for Timer Input(1)(2) (see Figure 6-60)
||Cycle time, TM64Px_IN12
||Pulse duration, TM64Px_IN12 high
||Pulse duration, TM64Px_IN12 low
||Transition time, TM64Px_IN12
||0.25P or 10(3)
(1) P = OSCIN cycle time in ns.
(2) C = TM64P0_IN12 cycle time in ns. For example, when TM64Px_IN12 frequency is 27 MHz, use C = 37.037 ns
(3) Whichever is smaller. P = the period of the applied signal. Maintaining transition times as fast as possible is recommended to improve noise immunity on input signals.
Figure 6-60 Timer Timing