ISL12022M Просмотр технического описания (PDF) - Intersil

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производитель

ISL12022M

Real Time Clock with Embedded Crystal, ±5ppm Accuracy

Intersil 

ISL12022M

Ordering Information

PART NUMBER

(Note)

PART

MARKING

VDD RANGE

(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.

Block Diagram

SDA

SCL

SDA

BUFFER

SCL

BUFFER

I2C

INTERFACE

CONTROL

LOGIC

REGISTERS

VDD

VTRIP

+-

VBAT

GND

CRYSTAL

OSCILLATOR

RTC

DIVIDER

POR

FREQUENCY

OUT

SWITCH

INTERNAL

SUPPLY

TEMPERATURE

SENSOR

FREQUENCY

CONTROL

ALARM

SECONDS

MINUTES

HOURS

DAY OF WEEK

DATE

MONTH

YEAR

CONTROL

REGISTERS

USER

SRAM

IRQ/FOUT

Pin Descriptions

PIN

NUMBER

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

10, 16, 17,

18, 19, 20

7

6, 8, 15

11

12

13

14

SYMBOL

NC

VBAT

GND

SDA

SCL

IRQ/FOUT

VDD

DESCRIPTION

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

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.

Ground.

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.

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

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.

Power Supply.

2

FN6668.5

July 10, 2009

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