39.4.13 Timer0 and Timer1 External Clock Requirements

Table 39-19. 

Standard Operating Conditions (unless otherwise stated)

Operating Temperature: -40°C≤TA≤+125°C
Param No. Sym. Characteristic Min. Typ. † Max. Units Conditions
40* TT0H T0CKI High Pulse Width No Prescaler 0.5TCY+20 — — ns
With Prescaler 10 — — ns
41* TT0L T0CKI Low Pulse Width No Prescaler 0.5TCY+20 — — ns
With Prescaler 10 — — ns
42* TT0P T0CKI Period Greater of: 20 or (TCY+40)/N — — ns N = Prescale value
45* TT1H T1CKI High Time Synchronous, No Prescaler 0.5TCY+20 — — ns
Synchronous, with Prescaler 15 — — ns
Asynchronous 30 — — ns
46* TT1L T1CKI Low Time Synchronous, No Prescaler 0.5TCY+20 — — ns
Synchronous, with Prescaler 15 — — ns
Asynchronous 30 — — ns
47* TT1P T1CKI Input Period Synchronous Greater of: 30 or (TCY+40)/N — — ns N = Prescale value
Asynchronous 60 — — ns
49* TCKEZTMR1 Delay from External Clock Edge to Timer Increment 2 TOSC — 7 TOSC — Timers 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 39-12. Timer0 and Timing1 External Clock Timings