PIC18F2220 MICROCHIP [Microchip Technology], PIC18F2220 Datasheet - Page 331

• Manufacturer Part Number: PIC18F2220
• Description: 28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 26-10:
TABLE 26-11: TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS
 2003 Microchip Technology Inc.
Param
40
41
42
45
46
47
48
No.
Note:
T
T
T
T
T
T
F
T
T1OSO/T1CKI
Symbol
CKE
T
T
T
T
T
T
T
0H
0L
0P
1H
1L
1P
1
2
TMR0 or
TMR
Refer to Figure 26-5 for load conditions.
T0CKI
TMR1
I Delay from External T1CKI Clock Edge to
T0CKI High Pulse Width
T0CKI Low Pulse Width
T0CKI Period
T1CKI
High Time
T1CKI
Low Time
T1CKI
Input
Period
T1CKI Oscillator 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
PIC18F2220/2320/4220/4320
40
45
No prescaler
With prescaler
No prescaler
With prescaler
No prescaler
With prescaler
PIC18FXX20
PIC18LFXX20
PIC18FXX20
PIC18LFXX20
PIC18FXX20
PIC18LFXX20
PIC18FXX20
PIC18LFXX20
42
47
20 ns or T
20 ns or T
0.5 T
0.5 T
0.5 T
41
46
0.5 T
Greater of:
Greater of:
T
2 T
CY
Min
DC
CY
CY
CY
10
10
10
25
30
50
10
25
30
50
60
CY
OSC
+ 10
CY
CY
+ 20
+ 20
+ 20
+ 5
N
N
+ 40
+ 40
7 T
Max
50
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
OSC
48
Units
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
—
DS39599C-page 329
N = prescale
value
(1, 2, 4,..., 256)
N = prescale
value
(1, 2, 4, 8)
Conditions