ISL12025 Datasheet, PDF (1/27 Pages) Intersil Corporation – Real-Time Clock/Calendar with I2C Bus and EEPROM

®
Data Sheet
August 13, 2008
ISL12025
FN6371.3
Real-Time Clock/Calendar with I²C Bus™
and EEPROM
The ISL12025 device is a low power real-time clock with
timing and crystal compensation, clock/calender, 64-bit
unique ID, power-fail indicator, two periodic or polled alarms,
intelligent battery backup switching, CPU Supervisor and
integrated 512x8-bit EEPROM, in a 16 Bytes per page
format.
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_RESET RANGE PACKAGE PKG.
MARKING VOLTAGE (°C) (Pb-Free) DWG. #
ISL12025IBZ* 12025 IBZ 2.63V -40 to +85 8 Ld SOIC M8.15
ISL12025IVZ* 2025 IVZ 2.63V -40 to +85 8 Ld TSSOP M8.173
*Add “-T” suffix for tape and reel. 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.
Pinouts
X1
X2
RESET
GND
ISL12025
(8 LD SOIC)
TOP VIEW
1
8
2
7
3
6
4
5
V_DD
V_BAT
SCL
SDA
V_BAT
V_DD
X1
X2
ISL12025
(8 LD TSSOP)
TOP VIEW
1
8
2
7
3
6
4
5
SCL
SDA
GND
RESET
Features
• Real-Time Clock/Calendar
- Tracks Time in Hours, Minutes and Seconds
- Day of the Week, Day, Month and Year
• 64-Bit Unique ID
• Two Non-Volatile Alarms
- Settable on the Second, Minute, Hour, Day of the Week,
Day or Month
- Repeat Mode (Periodic Interrupts)
• Automatic Backup to Battery or Super Cap
• On-Chip Oscillator Compensation
- Internal Feedback Resistor and Compensation
Capacitors
- 64 Position Digitally Controlled Trim Capacitor
- 6 Digital Frequency Adjustment Settings to ±30ppm
• 512x8-Bits of EEPROM
- 16-Bytes Page Write Mode (32 total pages)
- 8 Modes of Block Lock™ Protection
- Single Byte Write Capability
• High Reliability
- Data Retention: 50 years
- Endurance: 2,000,000 Cycles Per Byte
• I²C Interface
- 400kHz Data Transfer Rate
• 800nA Battery Supply Current
• Package Options
- 8 Ld SOIC and 8 Ld TSSOP Packages
• Pb-Free (RoHS Compliant)
Applications
• Utility Meters
• Audio/Video Components
• 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.
I²C Bus™ is a trademark owned by NXP Semiconductors Netherlands, B.V.
BlockLock™ is a trademark of Intersil Corporation or one of its subsidiaries. Copyright Intersil Americas Inc. 2006, 2007, 2008.
All Rights Reserved. All other trademarks mentioned are the property of their respective owners.