1339AC-31CSRGI8

Description：IC RTC CLK/CALENDAR I2C 16SOIC
Series：-

SKU:2d93885f87fa Category: Real Time Clocks Brand: Renesas Electronics Corporation

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Product introduction

Product Detailed Parameters

Description：IC RTC CLK/CALENDAR I2C 16SOIC
Series：-
Package：Tape & Reel (TR)
Mfr：Renesas Electronics Corporation
Type：Clock/Calendar
Features：Alarm, Leap Year, Square Wave Output, Trickle-Charger
Memory Size：-
Time Format：HH:MM:SS (12/24 hr)
Date Format：YY-MM-DD-dd
Interface：I2C, Serial
Voltage - Supply：3.3V ~ 5.5V
Voltage - Supply, Battery：1.3V ~ 3.7V
Current - Timekeeping (Max)：200µA @ 3.63V ~ 5.5V
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：16-SOIC (0.295", 7.50mm Width)
Supplier Device Package：16-SOIC

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1339AC-31CSRGI8

Overview

The Renesas Electronics 1339AC-31CSRGI8 is a Real Time Clock (RTC) integrated circuit featuring an I2C serial interface. It provides clock/calendar functionality with a date format of YY-MM-DD-dd and supports both 12-hour and 24-hour time formats (HH:MM:SS:hh). The device operates within a supply voltage range of 1.3 V to 3.7 V and functions reliably across a temperature range of -40°C to +85°C. It is housed in a 16-pin SOIC package and includes battery backup switching capabilities.

Feature Summary

Integrates clock and calendar counting logic with non-volatile memory retention via battery backup.

Applications

Industrial systems requiring precise timekeeping
Consumer electronics with real-time data logging needs
Digital systems utilizing I2C communication protocols

Procurement Notes

Verify the specific suffix 'CSRGI8' against official Renesas documentation to confirm pinout, package dimensions, and electrical characteristics match your design requirements. Ensure compatibility with your system's I2C bus voltage levels and check for any recent Product Change Notifications or lifecycle status updates directly from the manufacturer before finalizing procurement.

Selection Notes

Select this component when a low-power RTC with I2C interface and battery backup switching is required. Confirm that the 16-pin SOIC package fits your PCB layout constraints. Verify that the operating voltage range of 1.3 V to 3.7 V aligns with your system's power supply architecture and that the industrial temperature range meets environmental specifications.

Part Context

This part belongs to the Renesas 1339 series of Real Time Clocks, which are designed for applications needing accurate timekeeping with minimal external components. The series typically offers I2C connectivity and battery-backed operation to maintain time during main power loss, serving as a standard timing solution in embedded systems.

Replacement Considerations

Consult official Renesas substitution lists for verified equivalents. Generic cross-references may not guarantee identical pinouts or electrical performance.