ISL12022M-R5421 datasheet(3/6 Pages) INTERSIL

3 / 6 page

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REAL TIME CLOCK ICs

INTERSIL SELECTION GUIDE

HIGH-ACCURACy RTC MODULEs

ISL12022M

Crystal

Oscillator

Frequency

Control

Temp

Sensor

Single

Alarm

Compen-

sation

Registers

Brown-out

Alarm

Battery

ReSeal™

µP

I2C

IRQ/FOUT

Clock

Calendar

POR

Switch

VDD

VBAT

Battery-

backed

User SRAM

Battery or

Super Cap

2.7V to 5.5V

1.8V to 5.5V

TRIP

Power Control

-160.0

-140.0

-120.0

-100.0

-80.0

-60.0

-40.0

-20.0

0.0

-40

-20

100

Temperature (°C)

ISL12020M Compensated

Crystal Drift

Uncompensated Crystal Drift

Embedded Crystal

Embedded Temperature

Sensor

TINy RTC MODULE wITH EMBEDDED

CRySTAL AND TEMPERATURE SENSOR

ACHIEvES BETTER THAN ±5.0ppm

ACCURACy

Tiny Real Time Clock (RTC) module with

embedded crystal and temperature

compensation circuitry achieves better than

±5 ppm accuracy over the entire industrial

temperature range (-40°C to +85°C). Intersil

is the first to offer an RTC module in a DFN

package. This makes this module very attractive

for handheld and portable applications that have

stringent space requirements.

RTC Modules

with Embedded

Crystal and

Temp Comp

ISL12020M,

ISL12022M

kEy FEATURES

• ISL12020M: World’s smallest 3-in-1 RTC Module

- RTC + crystal + temperature sensor

- Available in DFN package

• Better than ±5.0ppm accuracy for industrial

temperature range

- Factory programmed for optimal accuracy

• Battery Reseal™ function extends battery shelf

life

• ISL12022M: Low-cost SOIC package

- Industrial: Utility meters, POS, instruments

- Consumer: GPS handhelds, cameras, copiers

• Stand-alone RTC with temperature sensor also

available (ISL12022, ISL12023)

BLOCk DIAGRAM

HIGH ACCURACy EvEN IN ExTREME TEMPERATURE

CONDITIONS

10.00

-50

-30

-10

Temperature (°C)

8.00

6.00

4.00

2.00

0.00

-2.00

-4.00

-6.00

-8.00

-10.00

Better than ±5.0ppm

over -40 to +85°C!

High-Accuracy RTC Modules

with Embedded Crystal and Temperature Compensation

Device

IBAT

(nA)

Alarms

Selectable

Frequency

Output

CPU Supervisory

Function

Battery

IRQ

FOUT

SRAM

Other Functions

Package

POR

Watchdog

Timer

Seal Backup

ISL12020M

1000

Shared Pin

128 Bytes

•BatterySwitchoverTimeStamp

•BatteryStatusMonitor

20 Ld DFN

ISL12022M

1000

Shared Pin

128 Bytes

•BatterySwitchoverTimeStamp

•BatteryStatusMonitor

20 Ld SOIC

ISL12022MA

1000

Shared Pin

128 Bytes

•EnhancedEnvironmentalMoistureTolerance

•100%PinCompatiblewithISL12022M

•FirmwareCompatiblewithISL12020Mand

ISL12022M

Enhanced

20 Ld SOIC

ISL12022M

-R5421

1000

Shared Pin

128 Bytes

•EnhancedESDPerformance

•100%PinCompatiblewithISL12022M

•FirmwareCompatiblewithISL12020Mand

ISL12022M

Enhanced

20 Ld SOIC

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