PIC16F88

Manufacturer Part NumberPIC16F88
ManufacturerMicrochip Technology Inc.
PIC16F88 datasheet
 
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PIC16F87/88
FIGURE 18-8:
TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS
RA4/T0CKI
RB6/T1OSO/T1CKI
TMR0 or TMR1
Note: Refer to Figure 18-3 for load conditions.
TABLE 18-6:
TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS
Param
Symbol
Characteristic
No.
40*
Tt0H
T0CKI High Pulse Width
41*
Tt0L
T0CKI Low Pulse Width
42*
Tt0P
T0CKI Period
45*
Tt1H
T1CKI High
Synchronous, Prescaler = 1
Time
Synchronous,
Prescaler = 2, 4, 8
Asynchronous
46*
Tt1L
T1CKI Low
Synchronous, Prescaler = 1
Time
Synchronous,
Prescaler = 2, 4, 8
Asynchronous
47*
Tt1P
T1CKI Input
Synchronous
Period
Asynchronous
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.
Data in “Typ” column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only and are
not tested.
DS30487C-page 182
41
40
42
46
45
47
Min
Typ†
Max
No Prescaler
0.5 T
+ 20
CY
With Prescaler
10
No Prescaler
0.5 T
+ 20
CY
With Prescaler
10
No Prescaler
T
+ 40
CY
With Prescaler
Greater of:
20 or T
+ 40
CY
N
0.5 T
+ 20
CY
PIC16F87/88
15
PIC16LF87/88
25
PIC16F87/88
30
PIC16LF87/88
50
0.5 T
+ 20
CY
PIC16F87/88
15
PIC16LF87/88
25
PIC16F87/88
30
PIC16LF87/88
50
PIC16F87/88
Greater of:
30 or T
+ 40
CY
N
PIC16LF87/88
Greater of:
50 or T
+ 40
CY
N
PIC16F87/88
60
PIC16LF87/88
100
DC
32.768
2 T
7 T
OSC
 2005 Microchip Technology Inc.
48
Units
Conditions
ns
Must also meet
parameter 42
ns
ns
Must also meet
parameter 42
ns
ns
ns
N = prescale value
(2, 4, ..., 256)
ns
Must also meet
parameter 47
ns
ns
ns
ns
ns
Must also meet
parameter 47
ns
ns
ns
ns
ns
N = prescale value
(1, 2, 4, 8)
N = prescale value
(1, 2, 4, 8)
ns
ns
kHz
OSC