PIC16LC74AT-10/SP View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16LC74AT-10/SP

8-Bit CMOS Microcontrollers with A/D Converter

Microchip Technology 

PIC16C7X

Applicable Devices 72 73 73A 74 74A 76 77

FIGURE 18-4: 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

Note: Refer to Figure 18-1 for load conditions.

TABLE 18-4: 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)

100

—

—

ns VDD = 5V, -40˚C to +85˚C

31*

Twdt Watchdog Timer Time-out Period

7

18

33 ms VDD = 5V, -40˚C to +85˚C

(No Prescaler)

32

Tost Oscillation Start-up Timer Period

— 1024TOSC —

— TOSC = OSC1 period

33*

Tpwrt Power up Timer Period

28

72

132 ms VDD = 5V, -40˚C to +85˚C

34

TIOZ I/O Hi-impedance from MCLR Low —

—

100 ns

or Watchdog Timer Reset

*

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.

© 1997 Microchip Technology Inc.

DS30390E-page 191

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