ISL12082

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

Product Status: Mass Production

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)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL12082
Basic Information
生产状态
Mass Production
供电电压Vcc (最小值) (V)
2.7
供电电压Vcc (最大值) (V)
5.5
VBAT (最小值)
1.8 V
VBAT (最大值)
5.5 V
IBAT (nA)
800
警报
1
晶体频率微调
Yes
可选频率输出
4
CPU监控功能POR
No
CPU监控功能看门狗定时器
No
电池密封
Yes
备用电池
Yes
POR的VTRIP
Yes
IRQ_Bar
IRQ1/FOUT, IRQ2
FOUT
IRQ_bar/FOUT
RESET_bar
No
振荡器补偿 (ppm)
-94 to +140
SRAM
N
其他功能
Alarm, Timer
内存类型
RAM
总线/输出接口
I2C
守时电流
1.6 µA
IRQ引脚
Yes
频率输出引脚
Yes
定时器
Yes
篡改检测
No
复位
No
资质级别
Standard
电池电压范围 (V)
1.8 to 5.5
供电电压Vcc范围 (V)
2.7 to 5.5
采样
YES
温度范围
-40 to +85

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