ISL1218 Datasheet, PDF (1/21 Pages) Intersil Corporation – Low Power RTC with Battery Backed SRAM

®
Data Sheet
ISL1218
I²C^® Real Time Clock/Calendar
June 22, 2006
FN6313.0
Low Power RTC with Battery Backed
SRAM
The ISL1218 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.
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.
Ordering Information
PART
NUMBER
(Note)
TEMP.
PART
V_DD RANGE
MARKING RANGE (°C)
PACKAGE
(Pb-Free)
ISL1218IBZ 1218IBZ
2.7V to -40 to +85 8 Ld SOIC
5.5V
ISL1218IBZ-T 1218IBZ
2.7V to -40 to +85 8 Ld SOIC
5.5V
Tape and Reel
ISL1218IUZ 1218Z
2.7V to -40 to +85 8 Ld MSOP
5.5V
ISL1218IUZ-T 1218Z
2.7V to -40 to +85 8 Ld MSOP
5.5V
Tape and Reel
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.
Pinout
ISL1218
(8 LD MSOP, SOIC)
TOP VIEW
X1 1
X2
2
V_BAT
3
GND
4
8
V_DD
7
IRQ/F_OUT
6
SCL
5
SDA
Features
• Real Time Clock/Calendar
- Tracks Time in Hours, Minutes, and Seconds
- Day of the Week, Day, Month, and Year
• 15 Selectable Frequency Outputs
• Single Alarm
- 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
• On-Chip Oscillator Compensation
• 8 Bytes Battery-Backed User SRAM
• I²C Interface
- 400kHz Data Transfer Rate
• 400nA Battery Supply Current
• Same Pin Out as ST M41Txx and Maxim DS13xx Devices
• Small Package Options
- 8 Ld MSOP and SOIC Packages
• Pb-Free Plus Anneal Available (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
1
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.
Copyright Intersil Americas Inc. 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.