HCS500

© 1997 Microchip Technology Inc.

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):

0

Industrial (I):

-40

Symbol

Parameters

Min

Max

Units

Conditions

Supply voltage

3.0

—

5.5

V

ensure Reset

—

Vss

—

V

ensure reset

0.05*

—

—

V/ms

Supply current

—

—

1.8

0.3

2.4

5

mA

µA

Sleep mode (no RF input)

Power Down Current

—

0.25

4

µA

—

0.3

5

µA

Input low voltage

—

V

—

0.8

V

Input high voltage

—

V

2.0

—

V

Output low voltage

—

—

0.6

V

Output high voltage

—

—

V

† 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):

0

°C ≤ TA ≤ +70°C

Industrial (I):

-40

°C ≤ TA ≤ +85°C

Symbol

Parameters

Min

Typ

Max

Units

Conditions

Transmit elemental period

65

—

660

µs

Output delay

48

75

237

ms

MCLR low time

150

—

—

ns

Time output valid

—

150

222

ms

MCLR

I/O Pins

Tov