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Renesas Electronics Corporation
Real-Time Clock With Battery Backed Non-Volatile RAM

Package Information

CAD Model:View CAD Model
Pkg. Type:TSSOP
Pkg. Code:DVG8
Lead Count (#):8
Pkg. Dimensions (mm):3.0 x 3.0 x 0.97
Pitch (mm):0.65

Environmental & Export Classifications

Moisture Sensitivity Level (MSL)3
Pb (Lead) FreeYes
ECCN (US)EAR99
HTS (US)8542.39.0090

Product Attributes

Lead Count (#)8
Carrier TypeTube
Moisture Sensitivity Level (MSL)3
Qty. per Reel (#)0
Qty. per Carrier (#)96
Package Area (mm²)9
Pkg. Dimensions (mm)3.0 x 3.0 x 0.97
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)0.65
Pb (Lead) FreeYes
Pb Free Categorye3 Sn
Temp. Range (°C)-40 to 85°C
Country of AssemblyTAIWAN
Country of Wafer FabricationTAIWAN, USA
Accuracy±20 ppm
Advanced Features56-Byte NV RAM
Alarms (#)0
Battery Current (nA)300
Input Freq (KHz)32.768 - 32.768
Input Freq (MHz)0.032768 - 0.032768
InterfaceI2C
Length (mm)3
Longevity2040 Apr
MOQ384
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. TypeTSSOP
Power Consumption Typ (mW)10
Price (USD)$1.72418
Product CategoryReal-Time Clocks, Real-Time Clocks
Prog. ClockYes
Prog. InterfaceI2C
PublishedNo
Requires Terms and ConditionsDoes not require acceptance of Terms and Conditions
SRAM56 Bytes
Selectable Frequency Output1
Supply Voltage Vcc (Min) (V)1.8
Tape & ReelNo
Thickness (mm)0.97
Time Keeping Current (µA)1.4
Width (mm)3
Xtal Freq (KHz)32.768 - 32.768

Description

The 1338 is a serial real-time clock (RTC) device that consumes ultra-low power and provides a full binary-coded decimal (BCD) clock/calendar with 56 bytes of battery backed Non-Volatile Static RAM. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. Access to the clock/calendar registers is provided by an I2C interface capable of operating in fast I2C mode. Built-in Power-sense circuitry detects power failures and automatically switches to the backup supply, maintaining time and date operation.