PIC16F8X datasheet(82/124 Pages) MICROCHIP

82 / 124 page

PIC16F8X

PIC16F83/84

DS30430C-page 82

FIGURE 10-5: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP

TIMER TIMING

TABLE 10-5

RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP

TIMER REQUIREMENTS

Parameter

No.

Sym

Characteristic

Min

Typ†

Max

Units

Conditions

TmcL

MCLR Pulse Width (low)

1000 *

—

2.0V

≤ VDD ≤ 6.0V

Twdt

Watchdog Timer Time-out Period

(No Prescaler)

7 *

33 *

VDD = 5.0V

Tost

Oscillation Start-up Timer Period

1024TOSC

TOSC = OSC1 period

Tpwrt

Power-up Timer Period

28 *

132 *

VDD = 5.0V

TIOZ

I/O Hi-impedance from MCLR Low

or reset

—

100 *

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

I/O Pins

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