DS1339C Datasheet

Part No.	In Stock	Price	Packaging	SPQ	Marking	MSL	Pins	Temp Range	Package Description
DS1339C-2#	0	$3.213	Tube	46	DS1339C-2	1	16	-40°C ~ 85°C	16-SOIC
DS1339C-3#	0	$2.898	Tube	46	DS1339C-3	1	16	-40°C ~ 85°C	16-SOIC
DS1339C-33#	0	$5.562	Tube	46	DS1339C-33	1	16	-40°C ~ 85°C	16-SOIC
DS1339C-33#T&R	2000pcs	$4.923	Reel	1000	DS1339C-33	1	16	-40°C ~ 85°C	16-SOIC

• Real-Time Clock (RTC) Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap-Year Compensation Valid Up to 2100
• Available in a Surface-Mount Package with an Integrated Crystal (DS1339C)
• I²C Serial Interface
• Two Time-of-Day Alarms
• Programmable Square-Wave Output
• Oscillator Stop Flag
• Automatic Power-Fail Detect and Switch Circuitry
• Trickle-Charge Capability

• Consumer Electronics (Set-Top Box, Digital Recording, Network Appliance)
• Handhelds (GPS, POS Terminal)
• Medical (Glucometer, Medicine Dispenser)
• Office Equipment (Fax/Printer, Copier)
• Other (Utility Meter, Vending Machine, Thermostat, Modem)
• Telecommunications (Router, Switcher, Server)

The DS1339C serial real-time clock (RTC) is a low-power clock/date device with two programmable time-of-day alarms and a programmable square-wave output. Address and data are transferred serially through an I²C bus. The clock/date provides 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 AM/PM indicator. The DS1339C has a built-in power-sense circuit that detects power failures and automatically switches to the backup supply, maintaining time, date, and alarm operation.