
PIC16C62B/72A
DS35008B-page 92
Preliminary
1998 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
——
sVDD = 5V, -40°C to +125°C
31*
Twdt
Watchdog Timer Time-out Period
(No Prescaler)
718
33
ms
VDD = 5V, -40°C to +125°C
32
Tost
Oscillator Start-up Timer Period
—
1024
TOSC
——
TOSC = OSC1 period
33*
Tpwrt
Power-up Timer Period
28
72
132
ms
VDD = 5V, -40°C to +125°C
34
TIOZ
I/O Hi-impedance from MCLR
Low or WDT reset
——
2.1
s
35
TBOR
Brown-out Reset Pulse Width
100
—
sVDD ≤ BVDD (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.
VDD
MCLR
Internal
POR
PWRT
Time-out
OSC
Time-out
Internal
RESET
Watchdog
Timer
RESET
33
32
30
31
34
I/O Pins
34
VDD
BVDD
35