ISL1208
I C Real Time Clock/Calendar
®
2 ®
Data Sheet
August 23, 2006
FN8085.5
Low Power RTC with Battery Backed
SRAM
Features
• Real Time Clock/Calendar
- Tracks Time in Hours, Minutes, and Seconds
- Day of the Week, Day, Month, and Year
The ISL1208 device is a low power real time clock with
timing and crystal compensation, clock/calendar, power fail
indicator, periodic or polled alarm, intelligent battery backup
switching and battery-backed user SRAM.
• 15 Selectable Frequency Outputs
• Single Alarm
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.
- Settable to the Second, Minute, Hour, Day of the Week,
Day, or Month
- Single Event or Pulse Interrupt Mode
• Automatic Backup to Battery or Super Cap
• Power Failure Detection
Ordering Information
• On-Chip Oscillator Compensation
• 2 Bytes Battery-Backed User SRAM
TEMP.
RANGE
(°C)
PART
V
DD
2
• I C Interface
PART NUMBER MARKING RANGE
PACKAGE
- 400kHz Data Transfer Rate
ISL1208IU8
AGS
2.7V to 5.5V -40 to +85 8 Ld MSOP
• 400nA Battery Supply Current
ISL1208IU8-TK AGS
2.7V to 5.5V -40 to +85 8 Ld MSOP
Tape & Reel
• Same Pin Out as ST M41Txx and Maxim DS13xx Devices
ISL1208IU8Z
(Note)
ANW
2.7V to 5.5V -40 to +85 8 Ld MSOP
(Pb-free)
• Small Package Options
- 8 Ld MSOP and SOIC Packages
ISL1208IU8Z-TK ANW
(Note)
2.7V to 5.5V -40 to +85 8 Ld MSOP
Tape & Reel
• Pb-Free Plus Anneal Available (RoHS Compliant)
(Pb-free)
ISL1208IB8
1208I
2.7V to 5.5V -40 to +85 8 Ld SOIC
Applications
ISL1208IB8-TK 1208I
2.7V to 5.5V -40 to +85 8 Ld SOIC
Tape & Reel
• Utility Meters
• HVAC Equipment
ISL1208IB8Z
(Note)
1208ZI
2.7V to 5.5V -40 to +85 8 Ld SOIC
(Pb-free)
• Audio/Video Components
• Set Top Box/Television
• Modems
ISL1208IB8Z-TK 1208ZI
(Note)
2.7V to 5.5V -40 to +85 8 Ld SOIC
Tape & Reel
(Pb-free)
• Network Routers, Hubs, Switches, Bridges
• Cellular Infrastructure Equipment
• Fixed Broadband Wireless Equipment
• Pagers/PDA
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material
sets; molding compounds/die attach materials and 100% matte tin plate
termination finish, which are 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.
* Contact Factory for availability.
• POS Equipment
• Test Meters/Fixtures
Pinout
ISL1208
(8 LD MSOP, SOIC)
TOP VIEW
• Office Automation (Copiers, Fax)
• Home Appliances
• Computer Products
V
X1
X2
1
2
3
4
8
7
6
5
DD
• Other Industrial/Medical/Automotive
IRQ/F
SCL
OUT
V
BAT
SDA
GND
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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1
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