PIC16F819 Microchip Technology Inc., PIC16F819 Datasheet - Page 136

• Manufacturer Part Number: PIC16F819
• Description: 18/20-pin Enhanced Flash Microcontrollers With Nanowatt Technology
• Manufacturer: Microchip Technology Inc.

PIC16F818/819
FIGURE 15-8:
TABLE 15-4:
DS39598E-page 134
40*
41*
42*
45*
46*
47*
48
Param
No.
Note: Refer to Figure 15-3 for load conditions.
RB6/T1OSO/T1CKI
* 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.
T
T
T
T
T
T
F
TCKEZ
T
T
T
T
T
T
T
Symbol
TMR0 or TMR1
0H
0L
0P
1H
1L
1P
1
RA4/T0CKI
TMR
1 Delay from External Clock Edge to Timer Increment
TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS
T0CKI High Pulse Width
T0CKI Low Pulse Width
T0CKI Period
T1CKI High
Time
T1CKI Low Time Synchronous, Prescaler = 1
T1CKI Input
Period
Timer1 Oscillator Input Frequency Range
(Oscillator enabled by setting bit T1OSCEN)
TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS
Synchronous, Prescaler = 1
Synchronous,
Prescaler = 2,4,8
Asynchronous
Synchronous,
Prescaler = 2,4,8
Asynchronous
Synchronous
Asynchronous
Characteristic
40
45
No Prescaler
With Prescaler
No Prescaler
With Prescaler
No Prescaler
With Prescaler
PIC16F818/819
PIC16LF818/819
PIC16F818/819
PIC16LF818/819
PIC16F818/819
PIC16LF818/819
PIC16F818/819
PIC16LF818/819
PIC16F818/819
PIC16LF818/819
PIC16F818/819
PIC16LF818/819
42
47
20 or T
30 or T
50 or T
0.5 T
0.5 T
0.5 T
0.5 T
Greater of:
Greater of:
Greater of:
T
2 T
CY
41
Min
46
100
DC
CY
10
CY
10
CY
15
25
30
50
CY
15
25
30
50
60
OSC
CY
CY
CY
+ 40
+ 20
+ 20
N
+ 20
+ 20
N
N
+ 40
+ 40
+ 40
Typ†
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
 2004 Microchip Technology Inc.
32.768 kHz
7 T
Max
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
OSC
48
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
—
Must also meet
parameter 42
Must also meet
parameter 42
N = prescale value
(2, 4, ..., 256)
Must also meet
parameter 47
Must also meet
parameter 47
N = prescale
value (1, 2, 4, 8)
N = prescale
value (1, 2, 4, 8)
Conditions