The Renesas 1339-31DVGI is a Clock/Calendar real-time clock (RTC) with a 2-Wire I²C serial interface, providing timekeeping in HH:MM:SS (12/24 hr) and date in YY-MM-DD-dd format. Supply voltage spans 3.3V to 5.5V for the main rail, with a separate battery-backup supply input accepting 1.3V to 3.7V to maintain timekeeping when the main power is off. Maximum timekeeping current draw is 200µA across the 3.63V to 5.5V supply range, a useful figure for estimating battery life in portable or backup-powered designs. Operating temperature covers -40°C to 85°C, suiting industrial environments where the RTC must keep accurate time across thermal swings.
Package, mounting, and integrated features
Housed in an 8-TSSOP surface-mount package (also listed as 8-MSOP with 0.118-inch / 3.00mm width), the supplier device package is 8-TSSOP — a common fine-pitch SOIC footprint for RTCs. Integrated features include an alarm, leap-year compensation, square-wave output, and a trickle-charger for maintaining a backup capacitor or rechargeable battery. Supplied in Tube packaging, suitable for low-to-medium volume assembly or prototyping; the tape-and-reel variant (1339-31DVGI8) is available for automated pick-and-place.
Lifecycle and compliance
No stock-holding claim is made.