FN6659 datasheet(4/32 Pages) RENESAS

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ISL12022

FN6659 Rev.3.01

Page 4 of 32

Oct 24, 2019

Pin Configuration

ISL12022

(8 LD SOIC)

TOP VIEW

VDD

IRQ/FOUT

SCL

SDA

VBAT

GND

Pin Descriptions

PIN # SYMBOL

DESCRIPTION

1X1

Crystal Input. 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.

2X2

Crystal Output. 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. X2 should be left

open when X1 is driven from external source.

3VBAT

Backup Supply. 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.

4GND

Ground.

5SDA

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.

6SCL

Serial Clock. The SCL input is used to clock all serial

data into and out of the device.

IRQ/FOUT Interrupt Output/Frequency Output. Multi-functional

pin that can be used as interrupt or frequency output

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

is an open-drain output.

8VDD

Power Supply.

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