ISL12057

Low Cost and Low Power I2 C RTC/Calendar with Alarm Function and Dual IRQ pins

Product Status: Mass Production

OVERVIEW

The ISL12057 device is a low-power, real-time clock that is pin compatible and functionally equivalent to Maxim DS1337 with clock/calendar and alarm function.

The oscillator uses an external, low-cost 32.768kHz crystal with 6pF load capacitance. 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 Maxim DS1337
  • Functionally Equivalent to Maxim DS1337
  • Real-Time Clock/Calendar
  • Tracks Time in Hours, Minutes, and Seconds
  • Day of the Week, Date, Month, and Year
  • Dual Interrupts for Frequency Output and Alarm interrupts
  • Four Selectable Frequency Outputs
  • Two Alarms
  • Settable to the Second, Minute, Hour, Day of the Week, and Date
  • I2C Interface
  • 400kHz Data Transfer Rate
  • Small Package Options
  • 8 Ld 2mmx2mm UTDFN
  • 8 Ld MSOP
  • 8 Ld SOIC
  • Pb-Free (RoHS Compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL12057
Basic Information
生产状态
Mass Production
供电电压Vcc (最小值) (V)
1.4
供电电压Vcc (最大值) (V)
3.6
警报
2
晶体频率微调
No
可选频率输出
4
CPU监控功能POR
Yes
CPU监控功能看门狗定时器
No
电池密封
N/A
备用电池
N/A
IRQ_Bar
IRQ1/FOUT, IRQ2
FOUT
IRQ1/FOUT
其他功能
Dual Alarms, Dual IRQs
内存类型
RAM
总线/输出接口
I2C
守时电流
0.5 µA
IRQ引脚
Yes
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)
N/A
供电电压Vcc范围 (V)
1.4 to 3.6
CAN 采样
YES
温度范围
-40 to +85

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