PIC16C63A Microchip Technology, PIC16C63A Datasheet - Page 110

• Manufacturer Part Number: PIC16C63A
• Description: 28/40-Pin 8-Bit CMOS Microcontrollers
• Manufacturer: Microchip Technology

PIC16C63A/65B/73B/74B
FIGURE 14-4: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP
FIGURE 14-5: BROWN-OUT RESET TIMING
TABLE 14-4:
DS30605A-page 110
Parameter
Watchdog
No.
I/O Pins
31*
33*
Time-out
Time-out
30
32
34
35
Internal
Internal
RESET
RESET
*
†
MCLR
PWRT
Timer
POR
OSC
V
Note: Refer to Figure 14-1 for load conditions.
V
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.
DD
DD
TmcL
Tpwrt
T
Sym
Twdt
Tost
T
BOR
IOZ
TIMER TIMING
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER,
AND BROWN-OUT RESET REQUIREMENTS
Characteristic
MCLR Pulse Width (low)
Watchdog Timer Time-out Period
(No Prescaler)
Oscillation Start-up Timer Period
Power-up Timer Period
I/O Hi-impedance from MCLR
Low or WDT reset
Brown-out Reset Pulse Width
33
32
BV
Preliminary
DD
Min
100
—
28
—
2
7
1024 T
Typ†
34
18
72
—
—
—
30
OSC
35
Max
132
2.1
—
33
—
—
Units
ms
ms
—
s
s
s
31
V
V
T
V
V
OSC
DD
DD
DD
DD
1998 Microchip Technology Inc.
= 5V, -40˚C to +125˚C
= 5V, -40˚C to +125˚C
= 5V, -40˚C to +125˚C
= OSC1 period
B
VDD
Conditions
(D005)
34