ISL12082

Low Power RTC with Battery ReSeal™, 2 IRQs, Hundredths of a Second Time, and Crystal Compensation

OVERVIEW

The ISL12082 device is a low power real time clock with timing and crystal compensation, clock/calendar, power fail indicator, 2 IRQs, periodic or polled alarm, timer/watchdog, and intelligent battery backup switching.

The oscillator uses an external, low-cost 32.768kHz crystal. The real time clock tracks time with separate registers for hours, minutes, seconds and hundredths of a second. 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.

KEY FEATURES

  • Real Time Clock/Calendar
  • Tracks Time in Hours, Minutes, Seconds, and Hundredths of a Second
  • Day of the Week, Day, Month, and Year
  • 4 Selectable Frequency Outputs
  • Alarm
  • Settable to the Second, Minute, Hour, Day of the Week, Day, or Month
  • Single Event or Pulse Interrupt Mode
  • Timer
  • 4 Selectable Timer Functions
  • 4 Selectable Timer Clock Frequencies
  • Single Event or Pulse Interrupt Mode
  • Automatic Backup to Battery or Supercapacitor
  • Power Failure Detection
  • Battery ReSeal™
  • On-Chip Oscillator Compensation
  • I2C Interface
  • 400kHz Data Transfer Rate
  • 800nA Battery Supply Current
  • Small Package Options
  • 8 Ld SOIC Package
  • 10 Ld MSOP Package
  • Pb-Free (RoHS Compliant)

PARAMETRICS

Parameters
ISL12082
Basic Information
Production Status
量産中
電源電圧Vcc (V) (min)
2.7
電源電圧Vcc (V) (max)
5.5
VBAT (min)
1.8 V
VBAT (max)
5.5 V
IBAT (nA)
800
アラーム
1
水晶周波数調整
Yes
選択可能周波数出力
4
CPU監視機能POR
No
CPU監視機能ウォッチドッグタイマ
No
バッテリシール
Yes
バッテリバックアップ
Yes
POR用VTRIP
Yes
IRQ_Bar
IRQ1/FOUT, IRQ2
FOUT
IRQ_bar/FOUT
RESET_bar
No
オシレータ補償 (ppm)
-94 to +140
SRAM
N
その他機能
Alarm, Timer
メモリタイプ
RAM
バス/出力インタフェース
I2C
タイムキーピング電流
1.6 µA
IRQピン
Yes
周波数OUTピン
Yes
タイマ
Yes
タンパ検出
No
リセット
No
認定レベル
Standard
バッテリ電圧範囲 (V)
1.8 to 5.5
電源電圧Vcc範囲 (V)
2.7 to 5.5
CANサンプル
YES
温度範囲
-40 to +85

ブロック図

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