Datasheet

PIC16C71X
DS30272A-page 144  1997 Microchip Technology Inc.
Applicable Devices 710 71 711 715
FIGURE 15-5: TIMER0 EXTERNAL CLOCK TIMINGS
TABLE 15-5: TIMER0 EXTERNAL CLOCK REQUIREMENTS
Param
No.
Sym Characteristic Min Typ† Max Units Conditions
40*
Tt0H T0CKI High Pulse Width No Prescaler 0.5T
CY + 20 — — ns Must also meet
parameter 42
With Prescaler 10 — — ns
41* Tt0L T0CKI Low Pulse Width No Prescaler 0.5TCY + 20 — — ns
Must also meet
parameter 42
With Prescaler 10 — — ns
42* Tt0P T0CKI Period No Prescaler TCY + 40 — — ns N = prescale value
(2, 4,..., 256)
With Prescaler Greater of:
20 ns or TCY + 40
N
* These parameters are characterized but not tested.
† Data in "Typ" column is at 5V, 25˚C unless otherwise stated. These parameters are for design guidance only and are not
tested.
Note: Refer to Figure 15-1 for load conditions.
41
42
40
RA4/T0CKI
TMR0