CF745 datasheet(114/217 Pages) MICROCHIP

114 / 217 page

PIC16C5X

PIC16C54A

DS30453B-page 114

Preliminary

FIGURE 14-4: RESET, WATCHDOG TIMER, AND

DEVICE RESET TIMER TIMING - PIC16C54A

TABLE 14-4:

RESET, WATCHDOG TIMER, AND DEVICE RESET TIMER - PIC16C54A

AC Characteristics Standard Operating Conditions (unless otherwise speciﬁed)

Operating Temperature

°C ≤ TA ≤ +70°C (commercial)

–40

°C ≤ TA ≤ +85°C (industrial)

–20

°C ≤ TA ≤ +85°C (industrial - PIC16LV54A-02I)

–40

°C ≤ TA ≤ +125°C (extended)

Operating Voltage VDD range is described in Section 14.1, Section 14.2 and Section 14.3.

Parameter

No.

Sym

Characteristic

Min

Typ(1)

Max

Units

Conditions

TmcL

MCLR Pulse Width (low)

100*

µs

—

VDD = 5.0V

VDD = 5.0V (PIC16LV54A only)

Twdt

Watchdog Timer Time-out

Period (No Prescaler)

9.0*

18*

30*

VDD = 5.0V (Commercial)

TDRT

Device Reset Timer Period

9.0*

18*

30*

VDD = 5.0V (Commercial)

TioZ

I/O Hi-impedance from MCLR

Low

—

100*

µs

—

(PIC16LV54A only)

* These parameters are characterized but not tested.

Note 1: Data in the Typical (“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

DRT

Time-out

Internal

RESET

Watchdog

Timer

RESET

I/O pin

(Note 1)

Note 1: I/O pins must be taken out of hi-impedance mode by enabling the output drivers in software.

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