ISL12020M Real Time Clock with Embedded Crystal, ±5ppm Accuracy

The ISL12020M device is a low power real time clock (RTC) with an embedded temperature sensor and crystal. Device functions include oscillator compensation, clock/calendar, power fail and low battery monitors, brownout indicator, one-time, periodic or polled alarms, intelligent battery backup switching, Battery ResealTM function and 128 bytes of battery-backed user SRAM. The device is offered in a 20 Ld DFN module that contains the RTC and an embedded 32.768kHz quartz crystal. The calibrated oscillator provides less than ±5ppm drift over the full -40°C to +85°C temperature range.

The RTC tracks time with separate registers for hours, minutes, and seconds. The calendar registers track date, month, year and day of the week and are 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. The time stamp function records the time and date of switchover from VDD to VBAT power, and also from VBAT to VDD power.

ISL12020M 特点

Embedded 32.768kHz Quartz Crystal in the Package
20 Ld DFN Package (for SOIC version, refer to the ISL12022M)
Calendar
On-chip Oscillator Temperature Compensation
10-bit Digital Temperature Sensor Output
15 Selectable Frequency Outputs
Interrupt for Alarm or 15 Selectable Frequency Outputs
Automatic Backup to Battery or Supercapacitor
VDD and Battery Status Monitors
Battery ResealTM Function to Extend Battery Shelf Life
Power Status Brownout Monitor
Time Stamp for Battery Switchover
128 Bytes Battery-Backed User SRAM
I2C-BusTM
RoHS Compliant

ISL12020M 应用

Utility Meters
POS Equipment
Printers and Copiers
Digital Cameras

ISL12020M 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 $
ISL12020MIRZ	量产	工业级	20 Ld QFN	1	2.79
ISL12020MIRZ-EVALZ			评估板	N/A	价格录入中
ISL12020MIRZ-T	量产	工业级	20 Ld QFN T+R	1	2.79