? Real Time Clock/Calendar

- Tracks Time in Hours, Minutes and Seconds

- Day of the Week, Day, Month, and Year

? On-chip Oscillator Compensation Over the Operating

Temperature Range

- ±5ppm Over -40°C to +85°C

? 10-bit Digital Temperature Sensor Output

- ±2°C Accuracy

? Customer Programmable Day Light Saving Time

? 15 Selectable Frequency Outputs

? 1 Alarm

- Settable to the Second, Minute, Hour, Day of the Week,

Day, or Month

- Single Event or Pulse Interrupt Mode

? Battery Reseal? Function to Extend Battery Shelf Life

? Automatic Backup to Battery or Super Capacitor

- Operation to VBAT = 1.8V

- 1.0μA Battery Supply Current

? Battery Status Monitor

- 2 User Programmable Levels

- Seven Selectable Voltages for Each Level

? Power Status Brownout Monitor

- Six Selectable Trip Levels, from 2.295V to 4.675V

? Oscillator Failure Detection

? Time Stamp for First VDD to VBAT, and Last VBAT to VDD

? 128 Bytes Battery-Backed User SRAM

? I2C Bus?

- 400kHz Clock Frequency

? 1μA Typical Battery Current

? Pb-Free (RoHS Compliant)

ISL12022屬于集成電路（IC） > 實時時鐘。瑞薩科技有限公司制造生產(chǎn)的ISL12022實時時鐘實時時鐘 (RTC) 為幾乎所有需要保持精確時間的電子設(shè)備提供時間和/或日期信息。時鐘類型有二進(jìn)制計數(shù)器、時鐘/日歷/監(jiān)控器、歷時計時器、幻時鐘芯片、便攜式系統(tǒng)控制器、溫度記錄器、時間事件記錄器和計時器時鐘外設(shè)。其包含 2 B 至 2 MB 不等的存儲器，接口選項有 I2C、并行、串行、SPI、1 線式、2 線式、3 線式和 4 線式。