PIC16C71 datasheet(255/337 Pages) MICROCHIP

255 / 337 page

Preliminary

DS30234D-page 255

PIC16C6X

Applicable Devices 61 62 62A R62 63 R63 64 64A R64 65 65A R65 66 67

FIGURE 22-4: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP

TIMER TIMING

FIGURE 22-5: BROWN-OUT RESET TIMING

TABLE 22-4:

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

AND BROWN-OUT RESET REQUIREMENTS

Parameter

No.

Sym

Characteristic

Min

Typ†

Max

Units

Conditions

TmcL

MCLR Pulse Width (low)

—

µs VDD = 5V, -40˚C to +125˚C

31*

Twdt

Watchdog Timer Time-out Period

(No Prescaler)

718

VDD = 5V, -40˚C to +125˚C

Tost

Oscillation Start-up Timer Period

—

1024 TOSC

——

TOSC = OSC1 period

33*

Tpwrt

Power-up Timer Period

132

VDD = 5V, -40˚C to +125˚C

TIOZ

I/O Hi-impedance from MCLR Low

or WDT reset

—

2.1

µs

TBOR

Brown-out Reset Pulse Width

100

—

µs VDD ≤ BVDD (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.

VDD

MCLR

Internal

POR

PWRT

Time-out

OSC

Time-out

Internal

RESET

Watchdog

Timer

RESET

I/O Pins

Note: Refer to Figure 22-1 for load conditions.

VDD

BVDD

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