1
®
FN6690.1
ISL12008
I
2
C Real Time Clock with Battery Backup
Low Power RTC with Battery ReSeal
™
Function
The ISL12008 device is a low power real time clock/calendar
that is pin compatible and functionally equivalent to the
ST M41T00S and Maxim DS1340 with timing and crystal
compensation. The device additionally provides power-fail
indicator, software alarm and intelligent battery backup.
The oscillator uses an external, low-cost 32.768kHz crystal.
The real time clock tracks time with separate registers for
hours, minutes, and seconds. The device has calendar
registers for date, month, year and day of the week. The
calendar is accurate through 2099, with automatic leap year
correction.
Pinout
ISL12008
(8 LD SOIC)
TOP VIEW
Features
• Pin Compatible to ST M41T00S and Maxim DS1340
• Functionality Equivalent to ST M41T00S and Maxim
DS1340
• Real Time Clock/Calendar
- Tracks Time in Hours, Minutes, Seconds and
Sub-seconds
- Day of the Week, Day, Month, and Year
• 512Hz Frequency Outputs for On-Chip Crystal
Compensation
• Software Alarm
- Settable to the Second, Minute, Hour, Day of the Week,
Day, or Month
• Automatic Low-Drop Battery Switch for Longest Backup
Life
• Power Failure Detection
• Battery ReSeal
™
for Long Shelf Life
•I
2
C Bus™
- 400kHz Data Transfer Rate
• 800nA Battery Supply Current
• Small Package Option
- 8 Ld SOIC
• Pb-Free (RoHS Compliant)
Applications
• Utility Meters
• HVAC Equipment
• Audio/Video Components
• Set-Top Box/Television
• Modems
• Network Routers, Hubs, Switches, Bridges
• Cellular Infrastructure Equipment
• Fixed Broadband Wireless Equipment
• Pagers/PDA
• POS Equipment
• Test Meters/Fixtures
• Office Automation (Copiers, Fax)
• Home Appliances
• Computer Products
• Other Industrial/Medical/Automotive
.
Ordering Information
PART
NUMBER
(Note)
PART
MARKING
V
DD
RANGE
(V)
TEMP.
RANGE
(°C)
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL12008IB8Z 12008 IBZ 2.7 to 5.5 -40 to +85 8 Ld SOIC M8.15
ISL12008IB8Z-T* 12008 IBZ 2.7 to 5.5 -40 to +85 8 Ld SOIC M8.15
*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.
1
2
3
4
8
7
X1
X2
V
BAT
V
DD
FT/OUT
SCL
SDA
GND
5
6
Data Sheet September 26, 2008
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
ReSeal™ is a trademark owned byIntersil Americas Inc.Copyright Intersil Americas Inc. 2008. All Rights Reserved
I
2
C Bus™ is a trademark owned by NXP Semiconductors Netherlands, B.V.
All other trademarks mentioned are the property of their respective owners.
