PIC16F627A Datasheet, PDF (148/168 Pages) Microchip Technology – FLASH-Based 8-Bit CMOS Microcontrollers

PIC16F627A/628A/648A
FIGURE 17-11: TIMER0 CLOCK TIMING
RA4/T0CKI
40
41
42
TMR0
TABLE 17-9: TIMER0 CLOCK REQUIREMENTS
Parameter
No.
Sym
Characteristic
Min
Typ† Max Units Conditions
40
Tt0H T0CKI High Pulse Width
No Prescaler 0.5 TCY + 20* — — ns
With Prescaler
10*
— — ns
41
Tt0L T0CKI Low Pulse Width
No Prescaler 0.5 TCY + 20* — — ns
With Prescaler
10*
— — ns
42
Tt0P T0CKI Period
TCY + 40*
N
— — ns N = prescale value
(1, 2, 4, ..., 256)
* These parameters are characterized but not tested.
† Data in “Typ” column is at 5.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are not
tested.
DS40044A-page 146
Preliminary
 2002 Microchip Technology Inc.