ISL12082 View Datasheet(PDF) - Intersil

Part Name

Description

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ISL12082

I2C-Bus™ Real Time Clock with Two Interrupts, Alarm, and Timer

Intersil 

ISL12082

Pin Descriptions

PIN

NUMBER

SOIC

MSOP

1

1

2

2

-

3

3

4

-

5

4

6

5

7

6

8

7

9

8

10

SYMBOL

DESCRIPTION

X1

The X1 pin is the input of an inverting amplifier and is intended to be connected to one pin of an external

32.768kHz quartz crystal. X1 can also be driven directly from a 32.768kHz source.

X2

The X2 pin is the output of an inverting amplifier and is intended to be connected to one pin of an external

32.768kHz quartz crystal.

VBAT

GND

This input provides a backup supply voltage to the device. VBAT supplies power to the device in the event

that the VDD supply fails. This pin should be tied to ground if not used.

Ground

NC

No Connect

IRQ2

Interrupt Output 2 is a multi-functional pin that can be used as alarm interrupt or timer interrupt pin. The

function is set via the configuration register.

SDA

Serial Data (SDA) is a bi-directional pin used to transfer serial data into and out of the device. It has an open

drain output and may be wire OR’ed with other open drain or open collector outputs.

SCL The Serial Clock (SCL) input is used to clock all serial data into and out of the device.

IRQ1/fOUT Interrupt Output 1/Frequency Output is a multi-functional pin that can be used as alarm interrupt or frequency

output pin. The function is set via the configuration register.

VDD Power supply

3

FN6731.3

November 24, 2008

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