1339C-31SRI

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

SKU:a775946a4aeb 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：Tube
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, 2-Wire 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
Mounting Type：Surface Mount
Package / Case：16-SOIC (0.295", 7.50mm Width)
Supplier Device Package：16-SOIC

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1339C-31SRI

Overview

The Renesas 1339C-31SRI is a Real-Time Clock (RTC) integrated circuit housed in a 16-SOIC package. It features an embedded crystal oscillator and communicates via a two-wire I²C serial interface. The device supports a supply voltage range of 3.3V to 5.5V, with a maximum timekeeping current of 200µA at voltages between 3.63V and 5.5V. It provides date and time information in formats including YY-MM-DD-dd and HH:MM:SS (12/24 hour). The component operates within a temperature range of -40°C to +85°C and includes features such as alarm capabilities, leap year compensation, square wave output, and trickle-charger functionality.

Feature Summary

Embedded crystal oscillator for simplified design
I²C serial interface (two-wire)
Alarm function and leap year compensation
Trickle-charger capability

Applications

General-purpose real-time clocking in embedded systems
Data logging applications requiring accurate time stamps
Industrial equipment operating in extended temperature ranges

Procurement Notes

Verify the obsolete status of this component before procurement planning. Confirm that the 16-SOIC package dimensions align with existing PCB footprints. Ensure compatibility with the system's I²C bus voltage levels given the 3.3V to 5.5V supply range. Check for available replacement alternatives from the manufacturer due to end-of-life status.

Selection Notes

Select this part when a low-pin-count RTC with an internal crystal is required. The 16-SOIC package suits surface-mount designs with space constraints. Verify that the host microcontroller supports the I²C protocol. Consider the 200µA timekeeping current for battery-backed power budget calculations.

Part Context

This component belongs to the 1339C series of real-time clocks. It is distinct from other variants by its specific package type and embedded crystal configuration. The 'SRI' suffix typically denotes the SOIC package and industrial temperature grade specifications within the product family.

Replacement Considerations

As the product is marked obsolete, verify if newer revisions or alternative packages within the same series are available. Consult official documentation for pin-compatible replacements or functional equivalents recommended by Renesas Electronics.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.