ISL1208 datasheet(3/21 Pages) INTERSIL

Nome de Peças	ISL1208

Descrição Electrónicos	Low Power RTC with Battery Backed SRAM

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Fabricante Electrônico	INTERSIL [Intersil Corporation]

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FN8085.5

August 23, 2006

Absolute Maximum Ratings

Voltage on VDD, VBAT, SCL, SDA, and IRQ Pins

(respect to ground) . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7.0V

Voltage on X1 and X2 Pins

(respect to ground) . . . . . . . . . . . . -0.5V to VDD + 0.5 (VDD Mode)

-0.5V to VBAT + 0.5 (VBAT Mode)

Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C

Lead Temperature (Soldering, 10s) . . . . . . . . . . . . . . . . . . . . +300°C

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the

device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

DC Operating Characteristics – RTC Temperature = -40°C to +85°C, unless otherwise stated.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

(Note 4)

MAX

UNITS

NOTES

VDD

Main Power Supply

2.7

5.5

V

VBAT

Battery Supply Voltage

1.8

5.5

V

IDD1

Supply Current

VDD = 5V

2

6

µA

1, 2

VDD = 3V

1.2

4

µA

IDD2

Supply Current With I2C Active

VDD = 5V

40

120

µA

1, 2

IDD3

Supply Current (Low Power Mode)

VDD = 5V, LPMODE = 1

1.4

5

µA

1

IBAT

Battery Supply Current

VBAT = 3V

400

950

nA

1

ILI

Input Leakage Current on SCL

100

nA

ILO

I/O Leakage Current on SDA

100

nA

VTRIP

VBAT Mode Threshold

1.6

2.2

2.6

V

VTRIPHYS

VTRIP Hysteresis

10

30

75

mV

VBATHYS

VBAT Hysteresis

15

50

100

mV

IRQ/FOUT

VOL

Output Low Voltage

VDD = 5V

IOL = 3mA

0.4

V

VDD = 2.7V

IOL = 1mA

0.4

V

Power-Down Timing Temperature = -40°C to +85°C, unless otherwise stated.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

(Note 4)

MAX

UNITS

NOTES

VDD SR-

VDD Negative Slewrate

10

V/ms

3

Serial Interface Specifications

Over the recommended operating conditions unless otherwise specified.

SYMBOL

PARAMETER

TEST CONDITIONS

MIN

TYP

(Note 4)

MAX

UNITS

NOTES

SERIAL INTERFACE SPECS

VIL

SDA and SCL Input Buffer LOW

Voltage

-0.3

0.3 x

VDD

V

VIH

SDA and SCL Input Buffer HIGH

Voltage

0.7 x

VDD

VDD +

0.3

V

Hysteresis

SDA and SCL Input Buffer Hysteresis

0.05 x

VDD

V

VOL

SDA Output Buffer LOW Voltage,

Sinking 3mA

00.4

V

ISL1208

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