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Renesas Electronics Corporation

Renesas’ Timing product portfolio has been acquired by SiTime.

Datasheets, documentation, and sample orders remain available on Renesas.com through late 2026. For new designs, purchasing, support, and product inquiries, visit SiTime.com or send an email to SalesClocks@sitime.com. Full transition to SiTime is expected by late 2026.

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)
HTS (US)

Product Attributes

Lead Count (#)8
Carrier TypeTube
Moisture Sensitivity Level (MSL)3
Qty. per Reel (#)0
Qty. per Carrier (#)96
Pkg. Dimensions (mm)3.0 x 3.0 x 0.97
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
Length (mm)3
MOQ288
Pkg. TypeTSSOP
Price (USD)$1.81104
Product CategoryReal-Time Clocks
Tape & ReelNo
Thickness (mm)0.97
Width (mm)3

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.