PIC16F628-20P Datasheet, PDF (142/170 Pages) Microchip Technology – FLASH-Based 8-Bit CMOS Microcontroller

PIC16F62X
TABLE 17-7: TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS
Param
No.
Sym
Characteristic
Min
Typ† Max Units
Conditions
40*
Tt0H T0CKI High Pulse Width
No Prescaler
With Prescaler
41*
Tt0L T0CKI Low Pulse Width
No Prescaler
With Prescaler
42*
Tt0P T0CKI Period
45*
Tt1H T1CKI High Synchronous, No Prescaler
Time
Synchronous, 16F62X
with Prescaler 16LF62X
Asynchronous 16F62X
16LF62X
46*
Tt1L T1CKI Low Time Synchronous, No Prescaler
Synchronous, 16F62X
with Prescaler 16LF62X
Asynchronous 16F62X
16LF62X
47*
Tt1P T1CKI input Synchronous 16F62X
period
16LF62X
Asynchronous 16F62X
16LF62X
Ft1 Timer1 oscillator input frequency range
(oscillator enabled by setting bit T1OSCEN)
48
TCKEZtmr1 Delay from external clock edge to timer
increment
* These parameters are characterized but not tested.
0.5TCY + 20
10
0.5TCY + 20
10
Greater of:
TCY + 40
N
0.5TCY + 20
15
25
30
50
0.5TCY + 20
15
25
30
50
Greater of:
TCY + 40
N
Greater of:
TCY + 40
N
60
100
DC
2Tosc
— — ns
— — ns
— — ns
— — ns
— — ns N = prescale value
(2, 4, ..., 256)
— — ns
— — ns
— — ns
— — ns
— — ns
— — ns
— — ns
— — ns
— — ns
— — ns
— — ns N = prescale value
(1, 2, 4, 8)
—— —
— — ns
— — ns
— 200 kHz
— 7Tosc —
† Data in “Typ” column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only and are not
tested.
FIGURE 17-11: CAPTURE/COMPARE/PWM TIMINGS
RB3/CCP1
(CAPTURE MODE)
50
51
52
RB3/CCP1
(COMPARE OR PWM MODE)
53
54
DS40300C-page 140
Preliminary
 2003 Microchip Technology Inc.