PIC16F83-04/SO 查看數據表（PDF） - Microchip Technology

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PIC16F83-04/SO

18-pin Flash/EEPROM 8-Bit Microcontrollers

Microchip Technology 

PIC16F8X

PIC16CR83/84

FIGURE 11-5: 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

I/O Pins

33

32

30

31

34

34

TABLE 11-5 RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP

TIMER REQUIREMENTS

Parameter

No.

Sym

Characteristic

Min

Typ†

Max Units

Conditions

30

TmcL MCLR Pulse Width (low)

1000 *

—

—

ns 2.0V ≤ VDD ≤ 6.0V

31

Twdt

Watchdog Timer Time-out Period

7*

(No Prescaler)

18

33 * ms VDD = 5.0V

32

Tost

Oscillation Start-up Timer Period

1024TOSC

ms TOSC = OSC1 period

33

Tpwrt Power-up Timer Period

28 *

72

132 * ms VDD = 5.0V

34

TIOZ

I/O Hi-impedance from MCLR Low —

or reset

—

100 * ns

* 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.

DS30430C-page 94

© 1998 Microchip Technology Inc.

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