PIC16F720-ESLASHML datasheet(201/244 Pages) MICROCHIP

201 / 244 page

 2010 Microchip Technology Inc.

DS41430A-page 201

PIC16F/LF720/721

TABLE 23-4:

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

AND BROWN-OUT RESET PARAMETERS

FIGURE 23-9:

TIMER0 AND TIMER1 EXTERNAL CLOCK TIMINGS

Standard Operating Conditions (unless otherwise stated)

Operating Temperature -40°C

TA +125°C

Param

No.

Sym.

Characteristic

Min.

Typ†

Max. Units

Conditions

30*

TMCLMCLR Pulse Width (low)

—

s

VDD = 5V, -40°C to +85°C

VDD = 5V(1)

TWDT

Standard Watchdog Timer Time-out

Period (No Prescaler)(2)

VDD = 3.3V-5V, -40°C to +85°C

VDD = 3.3V-5V(1)

33*

TPWRT

Power-up Timer Period, PWRTE = 0

140

34*

TIOZ

I/O high-impedance from MCLR Low

or Watchdog Timer Reset

——

2.0

s

VBOR

Brown-out Reset Voltage

1.80

1.9

2.1

36*

VHYST

Brown-out Reset Hysteresis

37*

TBORDC Brown-out Reset DC Response

Time

sVDD  VBOR, -40°C to +85°C

VDD

 VBOR

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.

Note 1:

Voltages above 3.6V require that the regulator be enabled.

Design Target. If unable to meet this target, the maximum can be increased, but the minimum cannot be

changed.

T0CKI

T1CKI

TMR0 or

TMR1

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