DS1339C-33

DS1339C-33 Datasheet

DS1339 I2C Serial Real-Time Clock

Part	Datasheet
DS1339C-33	DS1339C-33 (pdf)

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DS1339 I2C Serial Real-Time Clock The DS1339 serial real-time clock RTC is a lowpower clock/date device with two programmable timeof-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 DS1339 has a built-in powersense circuit that detects power failures and automatically switches to the backup supply, maintaining time, date, and alarm operation. 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 Real-Time Clock RTC Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with LeapYear 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 Underwriters Laboratory UL Recognized Pin Configurations appear at end of data sheet. ORDERING INFORMATION PART DS1339C-2 DS1339C-2# DS1339C-3 DS1339C-3# DS1339C-33 DS1339C-33# DS1339U-2 DS1339U-2+ DS1339U-3 DS1339U-3+ DS1339U-33 DS1339U-33+ TEMP RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C VOLTAGE V PIN-PACKAGE 16 SO 300 mils 16 SO 300 mils 16 SO 300 mils 16 SO 300 mils 16 SO 300 mils 16 SO 300 mils 8 µSOP 8 µSOP 8 µSOP 8 µSOP 8 µSOP 8 µSOP TOP MARK† DS1339C-2 DS1339C-2 DS1339C-3 DS1339C-3 DS1339C-33 DS1339C-33 1339 rr-2 1339 rr-2 1339 rr-3 1339 rr-3 1339 rr-33 1339 rr-33 1 of 19 DS1339 I2C Serial Real-Time Clock ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to +6.0V Operating Temperature Range to +85°C Storage Temperature to +125°C Soldering Temperature precautions in the Handling, PC Board Layout, and Assembly section. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to the absolute maximum rating conditions for extended periods may affect device reliability. RECOMMENDED DC OPERATING CONDITIONS TA = -40°C to +85°C Note 1 PARAMETER CONDITIONS DS1339-2 Supply Voltage DS1339-3 DS1339-33 Backup Supply Voltage Pullup Resistor Voltage SQW/INT, SDA, SCL , VCC = 0V VBACKUP VPU Logic 1 Logic 0 Power-Fail Voltage DS1339-2 DS1339-3 DS1339-33 x VCC UNITS V VCC + x VCC DC ELECTRICAL CHARACTERISTICS VCC = MIN to MAX, TA = -40°C to +85°C. Note 1 PARAMETER CONDITIONS MAX UNITS Input Leakage I/O Leakage Logic 0 Out VOL = 0.4V VCC > VCC MIN -3, -33 VCC 2.0V -2 Logic 0 Out VOL = VCC 1.8V < VCC < 2.0V DS1339-2 Logic 0 Out VOL = VCC 1.3V < VCC < 1.8V DS1339-2

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DS1339 I2C Serial Real-Time Clock

The DS1339 serial real-time clock RTC is a lowpower clock/date device with two programmable timeof-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 DS1339 has a built-in powersense circuit that detects power failures and automatically switches to the backup supply, maintaining time, date, and alarm operation.

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

Real-Time Clock RTC Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with LeapYear 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 Underwriters Laboratory UL Recognized

Pin Configurations appear at end of data sheet.
ORDERING INFORMATION

PART DS1339C-2 DS1339C-2# DS1339C-3 DS1339C-3# DS1339C-33 DS1339C-33# DS1339U-2 DS1339U-2+ DS1339U-3 DS1339U-3+ DS1339U-33 DS1339U-33+

TEMP RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C

VOLTAGE V

PIN-PACKAGE 16 SO 300 mils 16 SO 300 mils 16 SO 300 mils 16 SO 300 mils 16 SO 300 mils 16 SO 300 mils 8 µSOP 8 µSOP 8 µSOP 8 µSOP 8 µSOP 8 µSOP

TOP MARK† DS1339C-2 DS1339C-2 DS1339C-3 DS1339C-3 DS1339C-33 DS1339C-33 1339 rr-2 1339 rr-2 1339 rr-3 1339 rr-3 1339 rr-33 1339 rr-33
1 of 19

DS1339 I2C Serial Real-Time Clock

ABSOLUTE MAXIMUM RATINGS

Voltage Range on Any Pin Relative to +6.0V Operating Temperature Range to +85°C Storage Temperature to +125°C Soldering Temperature precautions in the Handling, PC Board Layout, and Assembly section.

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to the absolute maximum rating conditions for extended periods may affect device reliability.

RECOMMENDED DC OPERATING CONDITIONS

TA = -40°C to +85°C Note 1

PARAMETER

CONDITIONS

DS1339-2

Supply Voltage

DS1339-3

DS1339-33

Backup Supply Voltage

Pullup Resistor Voltage SQW/INT, SDA, SCL , VCC = 0V

VBACKUP VPU

Logic 1

Logic 0 Power-Fail Voltage

DS1339-2

DS1339-3

DS1339-33
x VCC

UNITS V

VCC +
x VCC

DC ELECTRICAL CHARACTERISTICS

VCC = MIN to MAX, TA = -40°C to +85°C. Note 1

PARAMETER

CONDITIONS

MAX UNITS

Input Leakage

I/O Leakage

Logic 0 Out VOL = 0.4V VCC > VCC MIN -3, -33 VCC 2.0V -2

Logic 0 Out VOL = VCC 1.8V < VCC < 2.0V DS1339-2

Logic 0 Out VOL = VCC 1.3V < VCC < 1.8V DS1339-2

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Datasheet ID: DS1339C-33 647155