PIC18F23K20 MICROCHIP [Microchip Technology], PIC18F23K20 Datasheet - Page 389

• Manufacturer Part Number: PIC18F23K20
• Description: 28/40/44-Pin Flash Microcontrollers with nanoWatt XLP Technology
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 26-9:
TABLE 26-11: TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS
 2010 Microchip Technology Inc.
Param
40
41
42
45
46
47
48
No.
Note:
T1OSO/T13CKI
Tt0H
Tt0L
Tt0P
Tt1H
Tt1L
Tt1P
Ft1
Tcke2tmrI Delay from External T13CKI Clock Edge to
Symbol
TMR0 or
Refer to Figure 26-4 for load conditions.
T0CKI
TMR1
T0CKI High Pulse Width
T0CKI Low Pulse Width
T0CKI Period
T13CKI
High Time
T13CKI Low
Time
T13CKI
Input Period
T13CKI Clock Input Frequency Range
Timer Increment
TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS
Synchronous, no prescaler
Synchronous,
with prescaler
Asynchronous
Synchronous, no prescaler
Synchronous,
with prescaler
Asynchronous
Synchronous
Asynchronous
Characteristic
40
45
No prescaler
With prescaler
No prescaler
With prescaler
No prescaler
With prescaler
42
47
PIC18F2XK20/4XK20
0.5 T
0.5 T
0.5 T
(T
(T
0.5 T
Greater of:
Greater of:
41
T
CY
46
20 ns or
20 ns or
CY
2 T
CY
Min
DC
CY
10
CY
10
CY
10
30
10
30
60
+ 40)/N
+ 40)/N
CY
OSC
+ 10
+ 20
+ 20
+ 20
+ 5
7 T
Max
50
—
—
—
—
—
—
—
—
—
—
—
—
—
—
OSC
48
Units Conditions
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
—
DS41303G-page 389
N = prescale
value
(1, 2, 4,..., 256)
N = prescale
value (1, 2, 4, 8)