ISL1220 Datasheet, PDF (1/20 Pages) Intersil Corporation – I2C® Real Time Clock/Calendar with Frequency Output

ISL1220
®
I²C^® Real Time Clock/Calendar with Frequency Output
Data Sheet
June 22, 2006
FN6315.0
Low Power RTC with 8 Bytes of Battery
Backed SRAM and Separate F_OUT
The ISL1220 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, battery-backed user SRAM and separate F_OUT
and IRQ outputs.
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)
PART
V_DD
MARKING RANGE
TEMP.
RANGE
(°C)
PACKAGE
(Pb-Free)
ISL1220IUZ 1220Z 2.7V to 5.5V -40 to +85 10 Ld MSOP
ISL1220IUZ-T 1220Z
2.7V to 5.5V -40 to +85 10 Ld MSOP
Tape and Reel
NOTE: Intersil Pb-free 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
ISL1220
(10 LD MSOP)
TOP VIEW
X1 ₁
X2 ₂
V_{BAT 3}
GND ₄
NC ₅
10 ^VDD
9 IRQ
8 SCL
7 SDA
6 FOUT
Features
• Real Time Clock/Calendar
- Tracks Time in Hours, Minutes, and Seconds
- Day of the Week, Day, Month, and Year
• Frequency Output pin
- 15 Selectable Output Frequencies
• Single Alarm with Separate Interrupt pin
- 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
• Small Package Option
- 10 Ld MSOP Package
• 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.
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Copyright Intersil Americas Inc. 2006. All Rights Reserved
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