www.intersil.com/timing

REAL TIME CLOCK ICs

LOw-COST, LOw-POwER RTCs

MICRO-POwER, LOw COST, SMALL RTC

PROvIDES SIGNIFICANT PCB REAL-ESTATE

SAvINGS

The ISL12057/8/9 offer a cost-improved 3-Volt

alternative to the most popular low-accuracy

timekeeping products, with operation down to

1.4V for battery-powered, portable applications.

Low Power, with

IRQs, Alarm and

Timer

ISL12057,

ISL12058,

ISL12059

kEy FEATURES

• Real time clock and calendar

• Low standby current

• Multiple selectable frequency outputs

• Selectable alarms

• Operates over 1.4V to 3.6V supplies

• Variety of popular compact packages)

ISL12058

Cost-reduced alternative

to ISL1208 with added

advantage of 3V

operation.

ISL12057

•Drop-in replacement for DS1337

•Features operation down to 1.4V, TDFN package, and competitive

price

ISL12059

•Improved alternative to ST M41T00S

•Features operation down to 1.4V and competitive price

Low-Cost, Low-Power RTCs

Device

(nA)

Alarms

Selectable

Frequency

Output

CPU Supervisory

Function

Battery

IRQ

SRAM

Other

Functions

Package

POR

Watchdog

Timer

Seal Backup

with Battery Backup

ISL12008

800

1

1

N

N

Y

Y

-

Dedicated Pin

8 Ld SOIC

ISL12082

800

1

4

N

N

Y

Y

Dedicated Pin

Dedicated Pin

N

•Timer

10 Ld MSOP, 8 Ld SOIC

with Battery Backed SRAM

ISL1208

400

1

15

N

N

Y

Y

Shared Pin

2 Bytes

8 Ld MSOP, 8 Ld SOIC,

8 Ld TDFN

ISL1218

400

1

15

N

N

Y

Y

Shared Pin

8 Bytes

8 Ld MSOP, 8 Ld SOIC

ISL1220

400

1

15

N

N

Y

Y

Dedicated Pin

Dedicated Pin

8 Bytes

10 Ld MSOP

with Battery Backed SRAM and Event Detection

ISL1209

400

1

15

N

N

Y

Y

Shared Pin

2 Bytes

•EventDetect

10 Ld MSOP

ISL1219

400

1

15

N

N

Y

Y

Shared Pin

2 Bytes

•EventDetect

•TimeStamp

10 Ld MSOP

ISL1221

400

1

15

N

N

Y

Y

Dedicated Pin

Dedicated Pin

2 Bytes

•EventDetect

•TimeStamp

10 Ld MSOP

with IRQs, Alarm and Timer

ISL12057

400

2

4

N

N

N

N

Shared Pin

N

•3V

8 Ld SOIC, 8 Ld MSOP,

8 Ld TDFN

ISL12058

400

2

4

N

N

N

N

Shared Pin

N

•3V

8 Ld SOIC, 8 Ld MSOP,

8 Ld TDFN, 8 Ld µTDFN

ISL12059

400

0

1

N

N

N

N

Shared Pin

N

•3V

8 Ld SOIC