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Real-Time Clock With Serial I2C Interface

Package Information

CAD Model:View CAD Model
Pkg. Type:SOIC
Pkg. Code:DCG8
Lead Count (#):8
Pkg. Dimensions (mm):4.9 x 3.9 x 1.5
Pitch (mm):1.27

Environmental & Export Classifications

Moisture Sensitivity Level (MSL)1
Pb (Lead) FreeYes
ECCN (US)EAR99
HTS (US)8542.39.0090

Product Attributes

Lead Count (#)8
Carrier TypeReel
Moisture Sensitivity Level (MSL)1
Qty. per Reel (#)3000
Qty. per Carrier (#)0
Package Area (mm²)19.1
Pkg. Dimensions (mm)4.9 x 3.9 x 1.5
Core Voltage (V)2.5V, 3.3V, 5V, 5.5V
Freq. Accuracy Init. (± PPM)10
Input TypeCrystal
Inputs (#)1
Output Voltage (V)2.5V, 3.3V, 5V, 5.5V
Pitch (mm)1.27
Pb (Lead) FreeYes
Pb Free Categorye3 Sn
Temp. Range (°C)-40 to 85°C
Country of AssemblyPHILIPPINES, THAILAND
Country of Wafer FabricationTAIWAN, UNITED STATES
Accuracy±20 ppm
Alarms (#)2
Battery Current (nA)300
Input Freq (KHz)32.768 - 32.768
Input Freq (MHz)0.032768 - 0.032768
InterfaceI2C
Length (mm)4.9
Longevity2040 Apr
MOQ3000
Output Banks (#)1
Output Freq Range (KHz)0.001 - 0.001, 4.096 - 4.096, 8.192 - 8.192, 32.768 - 32.768
Output Freq Range (MHz)1.0E-6 - 1.0E-6, 0.004096 - 0.004096, 0.008192 - 0.008192, 0.032768 - 0.032768
Output TypeLVCMOS
Outputs (#)1
Pkg. TypeSOIC
Power Consumption Typ (mW)10
Prog. ClockYes
Prog. InterfaceI2C
PublishedNo
Reel Size (in)13
Requires Terms and ConditionsDoes not require acceptance of Terms and Conditions
Selectable Frequency Output1
Supply Voltage Vcc (Min) (V)2
Tape & ReelYes
Thickness (mm)1.5
Time Keeping Current (µA)1.4
Width (mm)3.9
Xtal Freq (KHz)32.768 - 32.768

Description

The 1339 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 1339 has a built-in power-sense circuit that detects power failures and automatically switches to the backup supply, maintaining time, date, and alarm operation.