1339BC-31SRGI8

Overview

The Renesas 1339BC-31SRGI8 is a low-power serial real-time clock (RTC) integrated circuit featuring an I2C bus interface. It provides accurate timekeeping with a date format of YY-MM-DD-dd and supports both 12-hour and 24-hour time formats. The device operates within a supply voltage range of 1.3V to 3.7V for battery backup and up to 5.5V for main power, ensuring reliable performance across temperatures from -40°C to +85°C. Packaged in an 8-pin TSSOP, it includes features such as alarm capabilities, leap year compensation, and a trickle charger.

Feature Summary

• Integrated clock and calendar functionality with programmable alarms
• Ultra-low power consumption for extended battery life
• Supports standard I2C serial communication protocol
• Includes automatic leap year correction logic

Applications

• Portable consumer electronics requiring precise time tracking
• Industrial control systems needing reliable date logging
• Battery-powered IoT devices with limited energy resources

Procurement Notes

Verify the specific suffix '8' indicates tape-and-reel packaging when ordering. Confirm that the component meets RoHS compliance requirements for your region. Ensure the I2C address configuration matches your system design before integration. Check for any recent product change notifications regarding pinout or electrical characteristics.

Selection Notes

Select this model when a compact surface-mount RTC with I2C interface is required. It is suitable for applications demanding low standby current and long-term accuracy without external crystal components if supported by the specific variant configuration. Consider the operating temperature range for harsh environments.

Part Context

This part belongs to the Renesas 1339 series of serial real-time clocks. The series is designed for low-cost, low-power applications where space is constrained. The BC variant typically denotes specific feature sets like battery charging capabilities compared to base models.

Replacement Considerations

Direct substitutes may include other Renesas 1339 series variants with compatible pinouts and interfaces. Verify functional equivalence regarding alarm registers and memory maps before replacing.