DSPIC33EP128GS708 datasheet(396/484 Pages) MICROCHIP

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dsPIC33EPXXXGS70X/80X FAMILY

DS70005258C-page 396

 2016-2018 Microchip Technology Inc.

TABLE 30-23: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER

TIMING REQUIREMENTS

AC CHARACTERISTICS

Standard Operating Conditions: 3.0V to 3.6V

(unless otherwise stated)

Operating temperature

-40°C

 TA  +85°C for Industrial

-40°C

 TA  +125°C for Extended

Param

No.

Symbol

Characteristic(1)

Min.

Typ.(2)

Max. Units

Conditions

SY00

TPU

Power-up Period

—

400

600

µs

SY10

TOST

Oscillator Start-up Time

—

1024 TOSC

——

TOSC = OSC1 period

SY12

TWDT

Watchdog Timer

Time-out Period

0.81

—

1.22

WDTPRE = 0,

WDTPOST<3:0> = 0000,

using LPRC tolerances indicated in

F21 (see Table 30-21) at +85°C

3.25

—

4.88

WDTPRE = 1,

WDTPOST<3:0> = 0000,

using LPRC tolerances indicated in

F21 (see Table 30-21) at +85°C

SY13

TIOZ

I/O High-Impedance from

MCLR Low or Watchdog

Timer Reset

0.68

0.72

1.2

µs

SY20

TMCLR

MCLR Pulse Width (low)

—

µs

SY30

TBOR

BOR Pulse Width (low)

—

µs

SY35

TFSCM

Fail-Safe Clock Monitor

Delay

—

500

900

µs

-40°C to +85°C

SY36

TVREG

Voltage Regulator

Standby-to-Active mode

Transition Time

——

µs

SY37

TOSCDFRC FRC Oscillator Start-up

Delay

—48

—

µs

SY38

TOSCDLPRC LPRC Oscillator Start-up

Delay

——

µs

Note 1: These parameters are characterized but not tested in manufacturing.

2: Data in “Typ.” column is at 3.3V, +25°C unless otherwise stated.

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