2

FN6668.5

July 10, 2009

Block Diagram

Ordering Information

PART NUMBER

(Note)

PART

MARKING

(V)

TEMP RANGE

(°C)

PACKAGE

(Pb-Free)

PKG.

DWG. #

ISL12022MIBZ*

ISL12022MIBZ

2.7 to 5.5

-40 to +85

20 Ld SOIC

M20.3

*Add “-T” suffix for tape and reel. Please refer to TB347 for details on reel specifications.

NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100%

matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations).

Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J

STD-020.

INTERFACE

CONTROL

LOGIC

ALARM

FREQUENCY

OUT

RTC

DIVIDER

SDA

BUFFER

CRYSTAL

OSCILLATOR

POR

SWITCH

SCL

BUFFER

SDA

SCL

INTERNAL

SUPPLY

SECONDS

MINUTES

HOURS

DAY OF WEEK

DATE

MONTH

YEAR

USER

SRAM

CONTROL

REGISTERS

GND

REGISTERS

TEMPERATURE

SENSOR

FREQUENCY

CONTROL

+

-

Pin Descriptions

PIN

NUMBER

SYMBOL

DESCRIPTION

1, 2, 3, 4, 5, 9,

10, 16, 17,

18, 19, 20

NC

No Connection. Do not connect to a signal or supply voltage.

6, 8, 15

GND

Ground.

11

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.

12

SCL

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

13

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. The output is open drain and requires a pull-up resistor.

14

Power Supply.

ISL12022M