PIC16C765SLASHP datasheet(133/158 Pages) MICROCHIP

133 / 158 page

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DS41124A-page 133

PIC16C745/765

FIGURE 16-6: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP

TIMER TIMING

FIGURE 16-7: BROWN-OUT RESET TIMING

TABLE 16-4:

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

AND BROWN-OUT RESET REQUIREMENTS

Param No.

Sym

Characteristic

Min

Typ†

Max

Units

Conditions

TMCLMCLR Pulse Width (low)

——

µsVDD = 5V, -40°C to +85°C

31*

TWDT

Watchdog Timer Time-out

Period (No Prescaler)

718

VDD = 5V, -40°C to +85°C

TOST

Oscillation Start-up Timer Period

—

1024 TOSC

——

TOSC = OSC1 period

33*

TPWRT

Power-up Timer Period

132

VDD = 5V, -40°C to +85°C

TIOZ

I/O Hi-impedance from MCLR

Low or WDT reset

——

2.1

µs

TBOR

Brown-out Reset Pulse Width

100

—

µsVDD ≤ 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 16-2 for load conditions.

VDD

BVDD

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