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PIC18F4520E/MLQTP Datasheet(PDF) 348 Page - Microchip Technology

Part # PIC18F4520E/MLQTP
Description  28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
PDF  390 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC18F4520E/MLQTP Datasheet(HTML) 348 Page - Microchip Technology

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PIC18F2420/2520/4420/4520
DS39631A-page 346
Preliminary
 2004 Microchip Technology Inc.
FIGURE 26-9:
TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS
TABLE 26-11: TIMER0 AND TIMER1 EXTERNAL CLOCK REQUIREMENTS
Note:
Refer to Figure 26-4 for load conditions.
46
47
45
48
41
42
40
T0CKI
T1OSO/T13CKI
TMR0 or
TMR1
Param
No.
Symbol
Characteristic
Min
Max
Units Conditions
40
Tt0H
T0CKI High Pulse Width
No prescaler
0.5 TCY + 20
—
ns
With prescaler
10
—
ns
41
Tt0L
T0CKI Low Pulse Width
No prescaler
0.5 TCY + 20
—
ns
With prescaler
10
—
ns
42
Tt0P
T0CKI Period
No prescaler
TCY + 10
—
ns
With prescaler
Greater of:
20 ns or
(TCY + 40)/N
—
ns
N = prescale
value
(1, 2, 4,..., 256)
45
Tt1H
T13CKI
High Time
Synchronous, no prescaler
0.5 TCY + 20
—
ns
Synchronous,
with prescaler
PIC18FXXXX
10
—
ns
PIC18LFXXXX
25
—
ns
VDD = 2.0V
Asynchronous PIC18FXXXX
30
—
ns
PIC18LFXXXX
50
—
ns
VDD = 2.0V
46
Tt1L
T13CKI Low
Time
Synchronous, no prescaler
0.5 TCY + 5
—
ns
Synchronous,
with prescaler
PIC18FXXXX
10
—
ns
PIC18LFXXXX
25
—
ns
VDD = 2.0V
Asynchronous PIC18FXXXX
30
—
ns
PIC18LFXXXX
50
—
ns
VDD = 2.0V
47
Tt1P
T13CKI
Input Period
Synchronous
Greater of:
20 ns or
(TCY + 40)/N
—
ns
N = prescale
value (1, 2, 4, 8)
Asynchronous
60
—
ns
Ft1
T13CKI Oscillator Input Frequency Range
DC
50
kHz
48
Tcke2tmrI Delay from External T13CKI Clock Edge to
Timer Increment
2 TOSC
7 TOSC
—



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