PIC16F676 Microchip Technology Inc., PIC16F676 Datasheet - Page 101

• Manufacturer Part Number: PIC16F676
• Description: 14-pin, Flash-based 8-bit Cmos Microcontroller
• Manufacturer: Microchip Technology Inc.

FIGURE 12-9:
TABLE 12-5:
© 2007 Microchip Technology Inc.
Param
No.
40*
41*
42*
45*
46*
47*
48
*
†
Tt0H
Tt0L
Tt0P
Tt1H
Tt1L
Tt1P
Ft1
TCKEZtmr1 Delay from external clock edge to timer increment
not tested.
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
Sym
T0CKI
T1CKI
TMR0 or
TMR1
TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS
T0CKI High Pulse Width
T0CKI Low Pulse Width
T0CKI Period
T1CKI High Time Synchronous, No Prescaler
T1CKI Low Time
Timer1 oscillator input frequency range
(oscillator enabled by setting bit T1OSCEN)
TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS
T1CKI Input
Period
Characteristic
Synchronous,
with Prescaler
Asynchronous
Synchronous, No Prescaler
Synchronous,
with Prescaler
Asynchronous
Asynchronous
Synchronous
40
45
No Prescaler
With Prescaler
No Prescaler
With Prescaler
42
47
20 or T
30 or T
0.5 T
0.5 T
0.5 T
0.5 T
Greater of:
Greater of:
41
46
2 T
Min
DC
CY
10
CY
10
CY
15
30
CY
15
30
60
OSC
CY
CY
N
N
+ 20
+ 20
+ 20
+ 20
PIC16F630/676
+ 40
+ 40
*
Typ†
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
7 T
200*
Max
—
—
—
—
—
—
—
—
—
—
—
—
—
48
OSC
*
Units
DS40039E-page 99
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
—
N = prescale value
(2, 4, ..., 256)
N = prescale value
Conditions
(1, 2, 4, 8)