ISL12022M Low Power RTC with Battery Backed SRAM, Integrated ±5ppm Temperature Compensation and Auto Daylight Saving
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
Reseal™ function and 128 bytes of battery-backed user SRAM.
Backup battery current draw is less than 1.6µA over the
temperature range. The device is offered in a 20 Ld SOIC 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.
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[ Utility Meters ][ POS Equipment ][ Printers and Copiers ][ Digital Cameras ] |
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Datasheet |
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ESD(CDM,>2.2kV) 、 ESD(HBM,>3kV) 、 ESD(MM,>300V) 、 IPC/JEDEC J STD-020 、 ISO9000 、 Pb-free 、 RoHS |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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June 20, 2012 |
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FN6668.9 |
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ISL12022M |
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1.2 MB |
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