ISL12022MA Low Power RTC with Battery Backed SRAM, Integrated ±5ppm Temperature Compensation and Auto Daylight Saving
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 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.
The ISL12022MA features enhanced immunity to ESD per the
IEC61000-4-2 standard, and also provides improved resistance
to system leakage related to environmental moisture.
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[ Utility Meters ][ POS Equipment ][ Printers and Copiers ][ Digital Cameras ] |
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Datasheet |
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ESD 、 IPC/JEDEC J STD-020 、 ISO9001 、 Pb-free 、 RoHS |
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Please see the document for details |
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20 Ld SOIC |
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English Chinese Chinese and English Japanese |
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September 5, 2012 |
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Rev 5.00 |
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FN7575 |
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1.8 MB |
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