www.intersil.com/timing

REAL TIME CLOCK ICs

FEATURE-RICH RTCs

Feature-Rich RTCs

Device

(nA)

Alarms

Selectable

Frequency

Output

CPU Supervisory

Function

Battery

IRQ

SRAM

Other Functions

Package

POR

Watchdog

Timer

Seal

Back-

up

with 50/60 Cycle AC Input

ISL12030

N/A

2

N

N

N

N

N

Y

N

128 Bytes

•ACInput

8 Ld SOIC

ISL12032

800

2

7

Y

Y

N

Y

Y

Y

128 Bytes

•ACInput

•CrystalBackup

•TrickleCharger

14 Ld TSSOP

High Precision RTC with On-Chip Temperature Sensor

ISL12022

1000

1

15

N

N

Y

Y

Shared Pin

128 Bytes

•BatterySwitchoverTimeStamp

•BatteryStatusMonitor

8 Ld SOIC

ISL12023

1000

1

15

N

N

Y

Y

Dedicated

Pin

Dedicated

Pin

128 Bytes

•BatterySwitchoverTimeStamp

•BatteryStatusMonitor

14 Ld TSSOP

with Integrated EEPROM

ISL12026

850

2

3

N

N

Y

Y

Shared Pin

512x8-Bit EEPROM

8 Ld SOIC, 8 Ld TSSOP

with Integrated EEPROM and Embedded Unique ID

ISL12024

850

2

3

N

N

Y

Y

Shared Pin

512x8-Bit EEPROM •64-bitUniqueID

8 Ld SOIC, 8 Ld TSSOP

ISL12024IRTCZ

850

2

3

N

N

Y

Y

Shared Pin

512x8-Bit EEPROM •64-bitUniqueID

8 Ld TDFN

with Integrated EEPROM and CPU Supervisory Functions

ISL12027

850

2

Y

Y

Y

Y

-

-

512x8-Bit EEPROM

8 Ld SOIC, 8 Ld TSSOP

ISL12028

850

2

3

Y

Y

Y

Y

Shared Pin

512x8-Bit EEPROM •CMOSoutputonalarms

14 Ld SOIC, 14 Ld TSSOP

ISL12029

850

2

3

Y

Y

Y

Y

Shared Pin

512x8-Bit EEPROM •Opendrainoutputonalarms

14 Ld SOIC, 14 Ld TSSOP

with Integrated EEPROM, Embedded Unique ID, and CPU Supervisory Functions

ISL12025

850

2

Y

Y

Y

Y

-

-

512x8-Bit EEPROM •64-bitUniqueID

•CPUSupervisor

8 Ld SOIC, 8 Ld TSSOP

ISL12025

Crystal

Oscillator

CPU Supervisor

Functions

Battery

Switch

Circuitry

64-bit

Unique ID

Serial

Interface

Decoder

512 x 8-Bits

EEPROM

Alarm

µP

VDD

VBAT

Battery or

SuperCap

Watchdog

Timer

Power On

Reset

2.7V to 5.5V

1.8V to 5.5V

Clock

Calendar

Battery-

backed

User SRAM

• Can be used to identify

each node. Data from each

node can be encrypted with

a unique ID for security

purposes.

• Unique ID can be accessed

for reading purposes only.

Embedded 64-bit Unique ID

Power-On Reset and watchdog

Timer (ISL12025 only)

2.63V to 4.64V

512x8-bits EEPROM

• 16-byte page write mode

(32 total pages)

• 8 modes of BlockLock™

protection

• >2,000,000 write cycle

and 50 years endurance

reliability

Do you track your product for

warranty purposes?

RTC wITH FACTORy PROGRAMMED 64-BIT

UNIQUE ID ENHANCES SECURITy

The ISL12024, ISL12025 are RTCs with

embedded 64-bit unique ID, 512 x 8-bits

EEPROM, and supervisory functions (ISL12025).

These devices permit data encryption in security

and networking applications and eliminate the

need for an external stand-alone unique ID.

Feature-Rich

RTC with

Embedded

Unique ID

ISL12024,

ISL12025

kEy FEATURES

• Real-Time Clock/Calendar-Tracks Time in Hours,

Minutes and Seconds

- Day of the Week, Day, Month and Year

• 64-Bit Read-Only Unique ID

• Two Non-Volatile Alarms

- Settable by Seconds, to Months

- Repeat Mode (Periodic Interrupts)

• Automatic Backup Switching to Battery or

SuperCap™

• On-Chip Oscillator Compensation

- Internal Feedback Resistor and Compensation

Capacitors

- Analog and Digital Trim

BLOCk DIAGRAM

Automatic Backup

Battery Switch