PIC16F72-04I/ML View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F72-04I/ML

28-Pin, 8-Bit CMOS FLASH Microcontoller with A/D Converter

Microchip Technology 

PIC16F72

FIGURE 14-6:

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 14-3 for load conditions.

30

31

34

34

FIGURE 14-7:

BROWN-OUT RESET TIMING

VDD

VBOR

35

TABLE 14-3: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER,

AND BROWN-OUT RESET REQUIREMENTS

Parameter No. Symbol

Characteristic

Min

Typ†

Max Units

Conditions

30

TmcL MCLR Pulse Width (low)

2

—

—

μs VDD = 5V, -40°C to +85°C

31*

TWDT Watchdog Timer Time-out Period

7

(No Prescaler)

18

33

ms VDD = 5V, -40°C to +85°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 +85°C

34

TIOZ

I/O Hi-impedance from MCLR Low —

—

2.1

μs

or Watchdog Timer Reset

35

TBOR Brown-out Reset Pulse Width

100

—

—

μs VDD ≤ VBOR (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.

DS39597C-page 96

© 2007 Microchip Technology Inc.

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