1338C-18SRI8

$1.39

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

SKU:e14d4efa46d3 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：Leap Year, NVSRAM, Square Wave Output
Memory Size：56B
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)：2µA @ 3.3V
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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1338C-18SRI8

Overview

The Renesas Electronics 1338C-18SRI8 is a serial real-time clock (RTC) featuring an I2C interface and an embedded crystal oscillator. It counts seconds, minutes, hours, day, date, month, and year with leap-year compensation valid up to the year 2100. The device includes two programmable time-of-day alarms and a programmable square-wave output. It operates within an industrial temperature range of -40°C to +85°C and utilizes a 16-pin SOIC package.

Feature Summary

Integrated I2C Serial Interface
Embedded Crystal Oscillator
Two Programmable Alarms
Automatic Leap-Year Compensation

Applications

Industrial Control Systems
Smart Meters
Wireless Gaming Consoles

Procurement Notes

Verify component authenticity through authorized channels due to potential counterfeit risks. Confirm RoHS compliance status as documentation may vary by production batch. Check for End-of-Life (EOL) notifications or Product Change Notices (PCN) prior to procurement to ensure long-term supply stability.

Selection Notes

Select this component when a low-power RTC with integrated timing elements is required. Ensure the design supports I2C communication protocols. Verify that the 16-pin SOIC footprint aligns with the PCB layout constraints and that the operating voltage matches system requirements.

Part Context

This part belongs to the 1338/1339 series of serial real-time clocks from Renesas. These devices are designed for applications requiring accurate timekeeping without external crystals, reducing bill of materials (BOM) complexity and board space.

Replacement Considerations

Direct pin-to-pin replacements should be verified against official substitution lists. Consider checking the 1338B or 1339C series variants for updated packaging or minor feature differences.

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.