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DS1339U-33+ Datasheet(PDF) 1 Page - Maxim Integrated Products |
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DS1339U-33+ Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 20 page 1 of 20 GENERAL DESCRIPTION The DS1339 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 I 2C 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 DS1339 has a built-in power- sense circuit that detects power failures and automatically switches to the backup supply, maintaining time, date, and alarm operation. APPLICATIONS Handhelds (GPS, POS Terminals) Consumer Electronics (Set-Top Box, Digital Recording, Network Appliance) Office Equipment (Fax/Printers, Copier) Medical (Glucometer, Medicine Dispenser) Telecommunications (Routers, Switches, Servers) Other (Utility Meter, Vending Machine, Thermostat, Modem ) FEATURES 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) I 2C Serial Interface Two Time-of-Day Alarms Programmable Square-Wave Output Oscillator Stop Flag Automatic Power-Fail Detect and Switch Circuitry Trickle-Charge Capability Underwriters Laboratories (UL) Recognized Pin Configurations appear at end of data sheet. ORDERING INFORMATION PART TEMP RANGE VOLTAGE (V) PIN-PACKAGE TOP MARK† DS1339C-2# -40°C to +85°C 2.0 16 SO (300 mils) DS1339C-2 DS1339C-3# -40°C to +85°C 3.0 16 SO (300 mils) DS1339C-3 DS1339C-33# -40°C to +85°C 3.3 16 SO (300 mils) DS1339C-33 DS1339U-2+ -40°C to +85°C 2.0 8 µSOP 1339 rr-2 DS1339U-3+ -40°C to +85°C 3.0 8 µSOP 1339 rr-3 DS1339U-33+ -40°C to +85°C 3.3 8 µSOP 1339 rr-33 +Denotes a lead(Pb)-free/RoHS-compliant package. #Denotes a RoHS-compliant device that may include lead that is exempt under the RoHS requirements. The lead finish is JESD97 category e3, and is compatible with both lead-based and lead-free soldering processes. †A “+” anywhere on the top mark indicates a lead(Pb)-free device. A “#” denotes a RoHS-compliant device. rr = second line, revision code DS1339 I 2C Serial Real-Time Clock 19-5770; Rev 4/11 |
Similar Part No. - DS1339U-33+ |
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Similar Description - DS1339U-33+ |
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