1338-31DCGI

$3.12

Description：IC RTC CLK/CALENDAR I2C 8SOIC
Series：-

SKU:ea89c391ddc8 Category: Real Time Clocks Brand: Renesas Electronics Corporation

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Product introduction

Product Detailed Parameters

Description：IC RTC CLK/CALENDAR I2C 8SOIC
Series：-
Package：Tube
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)：5µA @ 3.63V ~ 5.5V
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.154", 3.90mm Width)
Supplier Device Package：8-SOIC

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1338-31DCGI

Overview

The Renesas 1338-31DCGI is a Real-Time Clock (RTC) IC featuring an integrated I2C interface and non-volatile static RAM. It provides clock/calendar functionality with a 56-byte storage capacity, supporting both 12-hour and 24-hour time formats alongside YY-MM-DD weekday date formatting. The device operates on a supply voltage range of 3.3V to 5.5V for main power and 1.3V to 3.7V for battery backup. Key electrical characteristics include a maximum current consumption of 5µA at 3.63V to 5.5V. It is housed in an 8-SOIC package with a width of 3.90mm.

Feature Summary

Integrated 56-byte Non-Volatile Static RAM (NVSRAM)
I2C 2-Wire Serial Interface
Automatic Leap Year Compensation
Square Wave Output Pin

Applications

Data logging systems requiring timestamping
Battery-backed memory protection circuits
Industrial control panels with calendar functions

Procurement Notes

Verify the specific suffix against the official datasheet to ensure compatibility with required packaging options such as tube or tape-and-reel configurations. Confirm that the selected variant meets the necessary RoHS compliance standards and moisture sensitivity level requirements for the intended assembly process.

Selection Notes

Select this component when a low-power RTC with substantial onboard non-volatile storage is required. Ensure the system design accommodates the 8-SOIC footprint and that the I2C bus voltage levels are compatible with the 3.3V to 5.5V operating range. Verify that the 5µA current draw fits within the application's power budget constraints.

Part Context

This part belongs to the Renesas 1338 series of real-time clocks. It is functionally related to variants such as the 1338D-31DVGI and 1338-31DCGI8, which share core RTC capabilities but may differ in packaging, lead-free status, or specific ordering suffixes defined by the manufacturer.

Replacement Considerations

Direct substitutes include the 1338-31DCGI8. Cross-reference pinouts and electrical specifications with the official datasheet before implementation to ensure functional equivalence.

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

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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.