11

VT82885

Real Time Clock

VIA Technologies, Inc.

VOLTAGE ON ANY PIN RELATIVE TO GROUND -0.3V TO +7.0V

OPERATING TEMPERATURE

0

°C TO 70°C

STORAGE TEMPERATURE

-40

°C TO +70°C

SOLDERING TEMPERATURE

260

°C FOR 10 SECONDS

*This is a stress rating only and functional operation of the device at these or any other conditions

above those indicated in the operation sections of this specification is not implied. Exposure to

absolute maximum rating conditions for extended periods of time may affect reliability.

RECOMMENDED DC OPERATING CONDITIONS (0

°C TO 70°C)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Power Supply Voltage

4.5

5.0

5.5

V

1

Input Logic 1

2.2

V

1

Input Logic 0

-0.3

+0.8

V

1

DC ELECTRICAL CHARACTERISTICS (0

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Power Supply Current

510

mA

2

Input Leakage

-1.0

+1.0

µA

3

I/O Leakage

-1.0

+1.0

µA

4

Input Current

-1.0

+500

µA

3

Output @ 2.4V

-1.0

mA

1,5

Output @ 0.4V

4.0

mA

1

Write Protect Voltage

4.0

4.25

4.5

V

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Input Capacitance

5pF

Output Capacitance

7pF

AC ELECTRICAL CHARACTERISTICS (0

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Cycle Time

385

DC

ns

Pulse Width, DS/E Low or

RD/WR# High

150

ns