ISL12022 Low Power RTC with Battery-Backed SRAM and Embedded Temp Compensation ±5ppm with Auto Day Light Saving

The ISL12022 device is a low power real time clock with an embedded Temp sensor for oscillator compensation, clock/calendar, power fail, low battery monitor, brownout indicator, single periodic or polled alarms, intelligent battery-backup switching, Battery ResealTM function and 128 bytes of battery-backed user SRAM.

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.

Daylight Savings time adjustment is done automatically, using parameters entered by the user. Power fail and battery monitors offer user-selectable trip levels. A time stamp function records the time and date of switchover from VDD to VBAT power, and also from VBAT to VDD power.

ISL12022 特点

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 Temp 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 ResealTM 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 BusTM
- 400kHz Clock Frequency
8 Ld SOIC Package
Pb-Free (RoHS Compliant)

ISL12022 应用

Utility Meters
POS Equipment
Medical Devices
Security Systems
Vending Machines
White Goods
Printers and Copiers

ISL12022 芯片订购指南

芯片型号	产品状态	温度范围	封装尺寸图	潮湿敏感度等级MSL	美元价格US $
ISL12022IBZ	量产	工业级	8 Ld SOIC	1	1.79
ISL12022IBZ-T	量产	工业级	8 Ld SOIC T+R	1	1.79