PIC16LC71T-20E/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16LC71T-20E/SO

8-Bit CMOS Microcontrollers with A/D Converter

Microchip Technology 

PIC16C71X

Applicable Devices 710 71 711 715

FIGURE 11-4: 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 11-1 for load conditions.

FIGURE 11-5: BROWN-OUT RESET TIMING

VDD

BVDD

35

TABLE 11-4: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER,

AND BROWN-OUT RESET REQUIREMENTS

Parameter

No.

Sym Characteristic

Min

Typ†

Max Units

Conditions

30

TmcL MCLR Pulse Width (low)

1

—

—

µs VDD = 5V, -40˚C to +125˚C

31

Twdt Watchdog Timer Time-out Period

7*

18

33* ms VDD = 5V, -40˚C to +125˚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 +125˚C

34

TIOZ I/O Hi-impedance from MCLR Low —

—

1.1 µs

or Watchdog Timer Reset

35

TBOR Brown-out Reset pulse width

100

—

—

µs 3.8V ≤ VDD ≤ 4.2V

* 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.

DS30272A-page 97

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