PIC18F25J50 MICROCHIP [Microchip Technology], PIC18F25J50 Datasheet - Page 513
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PIC18F25J50
Manufacturer Part Number
PIC18F25J50
Description
28/44-Pin, Low-Power, High-Performance USB Microcontrollers with nanoWatt XLP Technology
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F25J50.pdf
(562 pages)
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FIGURE 30-7:
TABLE 30-14: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER
2011 Microchip Technology Inc.
Param.
30
31
32
33
34
36
37
38
Note 1:
No.
Note:
Watchdog
Oscillator
Time-out
Time-out
I/O pins
Internal
Internal
2:
3:
PWRT
MCLR
Reset
Reset
Timer
T
T
T
T
T
T
T
T
POR
Symbol
V
OST
CSD
MC
WDT
PWRT
IOZ
IRVST
LVD
DD
The maximum T
MCLR rising edge to code execution, assuming T
The MCLR input has an internal noise filter to avoid nuisance Resets. When deliberately trying to reset the
microcontroller, MCLR must be held low for at least this amount of time to ensure a Reset sequence is
triggered.
Refer to
L
AND BROWN-OUT RESET REQUIREMENTS
MCLR Pulse Width (low)
Watchdog Timer Time-out Period
(no postscaler)
Oscillator Start-up Timer Period
Power-up Timer Period
I/O High-Impedance from MCLR
Low or Watchdog Timer Reset
Time for Internal Reference
Voltage to become Stable
High/Low-Voltage Detect
Pulse Width
CPU Start-up Time
Figure 30-4
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND
POWER-UP TIMER TIMING
33
IOZ
Characteristic
is the lesser of (3 T
for load conditions.
32
CY
+ 2 s) or 700 s.
1024 T
2.67
Min
—
—
—
—
—
2
PWRT
PIC18F46J50 FAMILY
OSC
34
(and T
30
Typ
200
200
4.0
1.0
20
—
—
—
OST
1024 T
3 T
, if applicable) has already expired.
Max
5.53
CY
—
—
—
—
—
OSC
+ 2
31
Units
ms
ms
s
—
s
s
s
s
(Note 3)
T
(Note 1)
(Note 2)
OSC
DS39931D-page 513
34
Conditions
= OSC1 period
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