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ISL12022M データシート(PDF) 1 Page - Intersil Corporation

部品番号 ISL12022M
部品情報  Real Time Clock with Embedded Crystal, 짹5ppm Accuracy
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メーカー  INTERSIL [Intersil Corporation]
ホームページ  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL12022M データシート(HTML) 1 Page - Intersil Corporation

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1
®
FN6668.4
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 registered trademark owned by NXP Semiconductors Netherlands, B.V.
Copyright Intersil Americas Inc. 2008. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
ISL12022M
Real Time Clock with Embedded Crystal, ±5ppm Accuracy
Low Power RTC with Battery Backed
SRAM, Integrated ±5ppm Temperature
Compensation, and Auto Daylight Saving
The ISL12022M device is a low power real time clock (RTC)
with an embedded temperature sensor and crystal. Device
functions include oscillator compensation, clock/calendar,
power fail and low battery monitors, brownout indicator,
one-time, periodic or polled alarms, intelligent battery
backup switching, Battery Reseal™ function and 128 bytes
of battery-backed user SRAM. The device is offered in a
20 Ld SOIC module that contains the RTC and an
embedded 32.768kHz quartz crystal. The calibrated
oscillator provides less than ±5ppm drift over the full -40°C to
+85°C temperature range.
The RTC tracks time with separate registers for hours,
minutes, and seconds. The calendar registers track date,
month, year and day of the week and are accurate through
2099, with automatic leap year correction.
Daylight Savings time adjustment is done automatically,
using parameters entered by the user. Power fail and battery
monitors offer user-selectable trip levels. The time stamp
function records the time and date of switchover from VDD to
VBAT power, and also from VBAT to VDD power.
Pinout
ISL12022M
(20 LD SOIC)
TOP VIEW
Features
• Embedded 32.768kHz Quartz Crystal in the Package
• 20 Ld SOIC Package (for DFN version, refer to the
ISL12020M)
• Real Time Clock/Calendar
- Tracks Time in Hours, Minutes and Seconds
- Day of the Week, Day, Month and Year
• On-chip Oscillator Temperature Compensation
- ±5ppm Accuracy Over -40°C to +85°C
• 10-bit Digital Temperature Sensor Output
- ±2°C Accuracy
• Customer Programmable Day Light Saving Time
• 15 Selectable Frequency Outputs
• 1 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 Supercapacitor
- Operation to VBAT = 1.8V
- 1.0µA Battery Supply Current
• Battery Status Monitor
- 2 User Programmable Levels
- Seven Selectable Voltages for Each Level
• Battery Reseal™ Function to Extend Battery Shelf Life
• Power Status Brownout Monitor
- Six Selectable Trip Levels, from 2.295V to 4.675V
• Oscillator Failure Detection
• Time Stamp for First VDD to VBAT, and Last VBAT to VDD
Switchover
• 128 Bytes Battery-Backed User SRAM
•I2C-Bus™
- 400kHz Clock Frequency
Applications
• Utility Meters
• POS Equipment
• Medical Devices
• Printers and Copiers
• Digital Cameras
• Security Systems
• Vending Machine
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VBAT
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IRQ/FOUT
SCL
SDA
Data Sheet
December 18, 2008


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