1339AC-31SRGI8

Overview

The Renesas Electronics Corporation 1339AC-31SRGI8 is a Real-Time Clock (RTC) device belonging to the 1339C series. It features an embedded crystal oscillator and utilizes a serial I2C interface for address and data transfer. The component provides comprehensive clock/date information, including seconds, minutes, hours, day, date, month, and year, with automatic adjustments for varying month lengths and leap years. It supports both 24-hour and 12-hour formats with AM/PM indicators. The device includes two programmable time-of-day alarms and a programmable square-wave output. A built-in power-sense circuit detects power failures and automatically switches to a backup supply to maintain operation.

Feature Summary

• Integrated I2C Serial Interface
• Embedded Crystal Oscillator
• Automatic Leap Year Correction
• Dual Programmable Alarms

Applications

• Wireless electronic games
• Flexible Wi-Fi 6 systems
• Industrial equipment

Procurement Notes

Verify current availability status as this component may be subject to discontinuation or limited supply conditions. Confirm RoHS compliance and moisture sensitivity levels prior to procurement. Ensure compatibility with existing I2C bus configurations and voltage requirements during the sourcing phase.

Selection Notes

Select this RTC for applications requiring precise timekeeping with minimal external components due to the embedded crystal. Verify that the system design accommodates the SOIC-16 package dimensions and pitch. Ensure the operating environment falls within the specified temperature range and that the I2C interface speed matches the controller capabilities.

Part Context

This part belongs to the 1339C family of real-time clocks manufactured by Renesas Electronics. The 'A' suffix typically denotes specific manufacturing revisions or quality grades within the series. The 'SRGI8' suffix indicates the specific packaging type, lead finish, and reel configuration suitable for surface-mount assembly processes.

Replacement Considerations

Direct pin-to-pin replacements within the same family include variants such as the 1339C-31SRI8. Verify functional equivalence regarding alarm configurations and power management features before substitution.