HCS500 datasheet(19/24 Pages) MICROCHIP

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HCS500

Preliminary

DS40153B-page 19

FIGURE 8-1:

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

TIMER TIMING

TABLE 8-1:

DC CHARACTERISTICS

Standard Operating Conditions (unless otherwise stated)

Operating temperature

Commercial (C):

°C ≤ TA ≤ +70‡°C

Industrial (I):

-40

°C ≤ TA ≤ +85‡°C

Symbol

Parameters

Min

Typ(†)

Max

Units

Conditions

VDD

Supply voltage

3.0

—

5.5

VPOR

VDD start voltage to

ensure Reset

—

Vss

—

SVDD

VDD rise rate to

ensure reset

0.05*

—

V/ms

IDD

Supply current

—

1.8

0.3

2.4

µA

FOSC = 4 MHz, VDD = 5.5V

Sleep mode (no RF input)

IPD

Power Down Current

—

0.25

µA

VDD = 3.0V, Commercial

—

0.3

µA

VDD = 3.0V, Industrial

VIL

Input low voltage

VSS

—

0.15 VDD

Except MCLR = 0.15 VDD

VSS

—

0.8

VDD between 4.5V and 5.5V

VIH

Input high voltage

0.25 VDD

—

VDD

Except MCLR = 0.85 VDD

2.0

—

VDD

VDD between 4.5V and 5.5V

VOL

Output low voltage

—

0.6

IOL = 8.7 mA, VDD = 4.5V

VOH

Output high voltage

VDD - 0.7

—

IOH = -5.4 mA, VDD = 4.5V

† Data in “Typ” column is at 5.0V, 25

°C unless otherwise stated. These parameters are for design guidance only and

are not tested.

These parameters are characterized but not tested.

Note:

Negative current is deﬁned as coming out of the pin.

TABLE 8-2:

AC CHARACTERISTICS

Standard Operating Conditions (unless otherwise speciﬁed):

Commercial (C):

°C ≤ TA ≤ +70°C

Industrial (I):

-40

°C ≤ TA ≤ +85°C

Symbol

Parameters

Min

Typ

Max

Units

Conditions

Transmit elemental period

—

660

µs

TOD

Output delay

237

TMCLR

MCLR low time

150

—

TOV

Time output valid

—

150

222

VDD

MCLR

I/O Pins

Tov

TMCLR

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