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DS1390

Maxim Integrated Products
Part Number DS1390
Manufacturer Maxim Integrated Products
Description Low-Voltage SPI/3-Wire RTCs
Published Jan 9, 2008
Detailed Description Click here for production status of specific part numbers. DS1390–DS1394 Low-Voltage SPI/3-Wire RTCs with Trickle Charg...
Datasheet PDF File DS1390 PDF File

DS1390
DS1390

Overview
Click here for production status of specific part numbers.
DS1390–DS1394 Low-Voltage SPI/3-Wire RTCs with Trickle Charger General Description The low-voltage serial-peripheral interface (SPI™) DS1390/DS1391/DS1394 and the low-voltage 3-wire DS1392/DS1393 real-time clocks (RTCs) are clocks/ calendars that provide hundredths of a second, seconds, minutes, hours, day, date, month, and year information.
The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year.
The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator.
One programmable time-of-day alarm is provided.
A temperature-compensated voltage reference monitors the status of VCC and automatically disables the bus interface and switches to the backup supply if a power failure is detected.
On the DS1390, a single open-drain output provides a CPU interrupt or a square wave at one of four selectable frequencies.
The DS1391 replaces the SQ...


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