ISL12008

I<sup>2</sup>C Real Time Clock with Battery Backup Low Power RTC with Battery ReSeal™ Function

Product Status: Mass Production

OVERVIEW

The ISL12008 device is a low power real time clock/calendar that is pin compatible and functionally equivalent to the ST M41T00S and Maxim DS1340 with timing and crystal compensation. The device additionally provides power-fail indicator, software alarm and intelligent battery backup.

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.

KEY FEATURES

  • Pin Compatible to ST M41T00S and Maxim DS1340
  • Functionality Equivalent to ST M41T00S and Maxim DS1340
  • Real Time Clock/Calendar
  • Tracks Time in Hours, Minutes, Seconds and Sub-seconds
  • Day of the Week, Day, Month, and Year
  • 512Hz Frequency Outputs for On-Chip Crystal Compensation
  • Software Alarm
  • Settable to the Second, Minute, Hour, Day of the Week, Day, or Month
  • Automatic Low-Drop Battery Switch for Longest Backup Life
  • Power Failure Detection
  • Battery ReSeal™ for Long Shelf Life
  • I2C Bus™
  • 400kHz Data Transfer Rate
  • 800nA Battery Supply Current
  • Small Package Option
  • 8 Ld SOIC
  • Pb-Free (RoHS Compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL12008
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
1
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
FOUT
FOUT
RESET_bar
No
振荡器补偿 (ppm)
-94 to +140
内存类型
RAM
总线/输出接口
I2C
守时电流
1.6 µA
IRQ引脚
No
频率输出引脚
Yes
定时器
No
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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