ISL12032 Low Power RTC with 50/60 Cycle AC Input, Alarms and Daylight Savings Correction

The ISL12032 device is a low power real time clock with 50/60 AC input for timing synchronization. It also has an oscillator utilizing an external crystal for timing back-up, clock/calendar registers, intelligent battery back-up switching, battery voltage monitor, brownout indicator, integrated trickle charger for super capacitor, single periodic or polled alarms, POR supervisory function, and up to 4 Event Detect with time stamp. There are 128 bytes of battery-backed user SRAM.

The oscillator uses a 50/60 cycle sine wave input, backed by an external, low-cost, 32.768kHz crystal. The real time clock tracks time with separate registers for hours, minutes, and seconds. The calendar registers contain the date, month, year, and day of the week. The calendar is accurate through year 2100, with automatic leap year correction and auto daylight savings correction.

ISL12032 特点

50/60 Cycle AC as a Primary Clock Input for RTC Timing
Redundant Crystal Clock Input Selectable by User
- Dynamically Switch from AC Clock Input to Crystal in Case of Power Failure
Real Time Clock/Calendar
- Tracks Time in Hours, Minutes, Seconds and tenths of a second
- Day of the Week, Day, Month, and Year
Auto Daylight Saving Time Correction
- Programmable Forward and Backward Dates
Security and Event Functions
- Event Detection with Time Stamp
- Stores First and Last Three Event Time Stamps
Separate FOUT Pin
- 7 Selectable Frequency Outputs
Dual Alarms with Hardware and Register Indicators
- Hardware Single Event or Pulse Interrupt Mode
Automatic Backup to Battery or Super Capacitor
- VBAT Operation Down to 1.8V
- 1.0μA Battery Supply Current
Two Battery Status Monitors with Selectable Levels
- Seven Selectable Voltages for Each Level
- 1st Level, Trip Points from 4.675V to 2.125V
- 2nd Level, Trip Points from 4.125V to 1.875V
VDD Power Brownout Monitor
- Six Selectable Trip Levels, from 4.675V to 2.295V
Time Stamp during Power to Battery and Battery to Power Switchover
Integrated Trickle Charger
- Four Selectable Charging Rates
128 Bytes Battery-Backed User SRAM
I2C Interface
- 400kHz Data Transfer Rate
Pb-free (RoHS compliant)

ISL12032 应用

Utility Meters
Control Applications
Security Related Applications
Vending Machines
White Goods
Consumer Electronics

ISL12032 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 $
ISL12032IVZ	量产	工业级	14 Ld TSSOP	1	2.06
ISL12032IVZ-T	量产	工业级	14 Ld TSSOP T+R	1	2.06