PIC16LC63A-04 Datasheet, PDF (126/184 Pages) Microchip Technology – 8-Bit CMOS Microcontrollers with A/D Converter

PIC16C63A/65B/73B/74B
FIGURE 16-7:
RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP
TIMER TIMING
VDD
MCLR
Internal
POR
PWRT
Time-out
OSC
Time-out
Internal
RESET
Watchdog
Timer
Reset
33
32
I/O Pins
Note: Refer to Figure 16-4 for load conditions.
30
31
34
34
FIGURE 16-8:
BROWN-OUT RESET TIMING
BVDD
VDD
35
TABLE 16-4: 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
—
— µs VDD = 5V, -40°C to +125°C
31*
TWDT
Watchdog Timer Time-out
Period (No Prescaler)
7
18
33 ms VDD = 5V, -40°C to +125°C
32
TOST
Oscillation 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 µs
35
TBOR Brown-out Reset Pulse Width 100
—
—
µs VDD ≤ 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.
DS30605C-page 126
 2000 Microchip Technology Inc.