1339-2DVGI8

Overview

The Renesas Electronics 1339-2DVGI8 is a Real-Time Clock (RTC) IC belonging to the 1339 series. It provides clock/calendar functionality with seconds, minutes, hours, day, date, month, and year data, including leap-year compensation valid until 2100. The device supports both 12-hour and 24-hour time formats. It features an I2C serial interface for address and data transfer. Key electrical parameters include a supply voltage range of 2V to 5.5V and a battery backup voltage range of 1.3V to 3.7V. The maximum current consumption during timekeeping is 200µA at 3.63V to 5.5V. The component operates within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated I2C serial interface for low-pin-count communication
• Automatic date adjustment for months with fewer than 31 days and leap years
• Built-in power-fail detect and switch circuitry for continuous operation
• Two programmable time-of-day alarms and a programmable square-wave output

Applications

• Smart electricity meters requiring precise time stamping
• Wireless gaming consoles needing real-time clock synchronization
• Flexible Wi-Fi 6 systems utilizing embedded timing functions

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and Moisture Sensitivity Level (MSL 3) handling requirements prior to assembly. Check for Product Change Notifications (PCN) regarding manufacturing site or material updates. Ensure availability aligns with project timelines as supply status may vary.

Selection Notes

Select this model when a low-power RTC with I2C interface is required in an 8-pin TSSOP package. Ensure the system design accommodates the 2V to 5.5V VCC supply and 1.3V to 3.7V battery backup ranges. Verify that the application requires two independent alarms and trickle-charge capability. Confirm compatibility with the -40°C to +85°C operating temperature range.

Part Context

The 1339-2DVGI8 is part of the broader 1339 family of serial real-time clocks from Renesas Electronics. This family includes variants with different packaging options such as SOIC and MSOP. The specific suffix 'DVG' indicates the 8-TSSOP package type. The device integrates oscillator stop flags and automatic power-fail detection to maintain data integrity during power transitions.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult Renesas Electronics for current alternative recommendations or cross-reference with similar I2C RTC devices if discontinuation is confirmed.