38.4.13 Timer0 and Timer1 External Clock Requirements

Table 38-19. 

Standard Operating Conditions (unless otherwise stated)

Operating Temperature: -40°C≤TA≤+125°C

Param No.Sym.CharacteristicMin.Typ. †Max.UnitsConditions
40*TT0HT0CKI High Pulse WidthNo Prescaler0.5TCY+20ns
With Prescaler10ns
41*TT0LT0CKI Low Pulse WidthNo Prescaler0.5TCY+20ns
With Prescaler10ns
42*TT0PT0CKI PeriodGreater of: 20 or (TCY+40)/NnsN = Prescale value
45*TT1HT1CKI High TimeSynchronous, No Prescaler0.5TCY+20ns
Synchronous, with Prescaler15ns
Asynchronous30ns
46*TT1LT1CKI Low TimeSynchronous, No Prescaler0.5TCY+20ns
Synchronous, with Prescaler15ns
Asynchronous30ns
47*TT1PT1CKI Input PeriodSynchronousGreater of: 30 or (TCY+40)/NnsN = Prescale value
Asynchronous60ns
49*TCKEZTMR1Delay from External Clock Edge to Timer Increment2 TOSC7 TOSCTimers in Sync mode

* - These parameters are characterized but not tested.

† Data in “Typ” column is at 3.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are not tested.

Figure 38-12. Timer0 and Timing1 External Clock Timings