1338AC-18SRGI8

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

SKU:faf531e1396b 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：1.8V ~ 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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1338AC-18SRGI8

Overview

The Renesas Electronics Corporation 1338AC-18SRGI8 is a Real-Time Clock (RTC) integrated circuit featuring battery-backed non-volatile RAM. It supports I2C and 2-wire serial interfaces for clock/calendar data access. The device provides timekeeping in HH:MM:SS format with leap year compensation and NVSRAM storage capacity of 56 bytes. Operating voltage ranges from 1.8V to 5.5V, with battery supply from 1.3V to 3.7V. Maximum current consumption is 2µA at 3.3V. It operates within -40°C to +85°C temperature range in a 16-SOIC package.

Feature Summary

Battery-backed non-volatile RAM for data retention
I2C and 2-wire serial interface compatibility
Leap year compensation and square wave output

Applications

Industrial control systems requiring precise timekeeping
Consumer electronics with calendar functionality
Data logging equipment needing backup memory

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and moisture sensitivity level (MSL 3) handling requirements during assembly. Check for obsolescence notices or product change notifications affecting availability. Ensure supply chain sources provide valid traceability documentation for quality assurance purposes.

Selection Notes

Consider the 16-SOIC package dimensions and surface mount installation type for PCB layout. Evaluate power supply constraints against the 1.8V to 5.5V operating range. Assess environmental conditions against the -40°C to +85°C operational temperature specification. Verify interface compatibility with host microcontrollers supporting I2C protocols.

Part Context

This component belongs to the 1338AC series of real-time clocks manufactured by Renesas Electronics. It serves as a specialized timing solution integrating both clock/calendar functions and non-volatile memory storage. The device replaces earlier iterations while maintaining functional compatibility within the broader RTC family designed for embedded applications.