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)

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
CAN 采样
YES
温度范围
-40 to +85

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