PIC16C62B/72A
DS35008C-page 92
Preliminary
1998-2013 Microchip Technology Inc.
FIGURE 13-7: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP
TIMER TIMING
FIGURE 13-8: BROWN-OUT RESET TIMING
TABLE 13-4:
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER
AND BROWN-OUT RESET REQUIREMENTS
Param
No.
Sym
Characteristic
Min
Typ†
Max
Units
Conditions
30
TmcL
MCLR Pulse Width (low)
2
—
—
s
V
DD
= 5V, -40°C to +125°C
31*
Twdt
Watchdog Timer Time-out Period
(No Prescaler)
7
18
33
ms
V
DD
= 5V, -40°C to +125°C
32
Tost
Oscillator Start-up Timer Period
—
1024
T
OSC
—
—
T
OSC
= OSC1 period
33*
Tpwrt
Power-up Timer Period
28
72
132
ms
V
DD
= 5V, -40°C to +125°C
34
T
IOZ
I/O Hi-impedance from MCLR
Low or WDT reset
—
—
2.1
s
35
T
BOR
Brown-out Reset Pulse Width
100
—
—
s
V
DD
B
VDD
(D005)
* 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.
V
DD
MCLR
Internal
POR
PWRT
Time-out
OSC
Time-out
Internal
RESET
Watchdog
Timer
RESET
33
32
30
31
34
I/O Pins
34
Note:
Refer to Figure 13-4 for load conditions.
V
DD
BV
DD
35
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