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ISL12027A Arkusz danych(PDF) 1 Page - Intersil Corporation

Numer części ISL12027A
Szczegółowy opis  Real Time Clock/Calendar with EEPROM
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Producent  INTERSIL [Intersil Corporation]
Strona internetowa  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL12027A Arkusz danych(HTML) 1 Page - Intersil Corporation

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1
®
ISL12027, ISL12027A
Real Time Clock/Calendar with EEPROM
The ISL12027 device is a low power real time clock with
timing and crystal compensation, clock/calender, power-fail
indicator, two periodic or polled alarms, intelligent battery
backup switching, CPU Supervisor and integrated 512x8-bit
EEPROM, in 16 Byte 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.
The ISL12027 and ISL12027A Power Control Settings are
different. The ISL12027 uses the Legacy Mode Setting, and
the ISL12027A uses the Standard Mode Setting.
Applications that have VBAT > VDD will require only the
ISL12027A. Please refer to“Power Control Operation” on
page 15 for more details. Also, please refer to “I2C
Communications During Battery Backup and LVR Operation”
on page 24 for important details.
Features
• Real Time Clock/Calendar
- Tracks Time in Hours, Minutes and Seconds
- Day of the Week, Day, Month and Year
• 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 SuperCap
• 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-Byte Page Write Mode (32 total pages)
- 8 Modes of BlockLock™ Protection
- Single Byte Write Capability
• High Reliability
- Data Retention: 50 years
- Endurance: >2,000,000 Cycles Per Byte
•I2C-bus™ 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
• HVAC Equipment
• 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
Pinouts
ISL12027, ISL12027A
(8 LD TSSOP)
TOP VIEW
ISL12027, ISL12027A
(8 LD SOIC)
TOP VIEW
X1
X2
VBAT
VDD
RESET
SCL
SDA
GND
1
2
3
4
7
8
6
5
X1
X2
VBAT
VDD
RESET
SCL
SDA
GND
1
2
3
4
7
8
6
5
Data Sheet
FN8232.8
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 of NXP B.V.
, BlockLock™ is a trademark of Intersil Corporation or one of its subsidiaries
Copyright Intersil Americas Inc. 2005, 2006, 2010. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
August 12, 2010


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