Product Model

DS1305EN+TR

Introduction

Serial Alarm Real-Time Clock

Brand and Manufacturer

MAXIM Integrated

Features

56-Byte, Battery-Backed, Nonvolatile (NV) RAM for Data Storage

Multi-Byte Burst Mode for Reading/Writing Clock and RAM Data

Two Time-of-day Alarms

Programmable Square Wave Output

Automatic Power-Fail Detect and Switch Circuitry

Product Performance

Low-Power Operation Extends Battery-Backup Run Time

Supports Full Clock Calendar Functionality

Provides Seconds, Minutes, Hours, Day, Date, Month, and Year Information

Technical Specifications

Accuracy ±2 Minutes/Month at 25°C

Serial Peripheral Interface (SPI) Compatible

Trickle-Charge Capability

3.0V to 5.5V Full Operation

Dimensions, Shape, and Packaging

Surface-Mount Package

Tape and Reel Packaging for Automated Assembly

Quality and Reliability

Temperature Range -40°C to +85°C

High Reliability with Long-Term Data Retention

Product Advantages

Integrated NV RAM for Data Storage without External Battery

Simple Serial Interface to Minimize Pin Count

Built-In Battery Monitor for Data Protection

Product Competitiveness

Popular Timekeeping IC

Widely Used in the Industry with Proven Track Record

Compatibility

Compatible with SPI Protocol for Ease of Integration into Existing Systems

Standard Certification and Compliance

Meets Industry Standards for Serial Real-Time Clocks

Lifespan and Sustainability

Designed for Long-Term Operation

Actual Application Fields

Consumer Electronics

Telecommunication Systems

Embedded Systems

Industrial Controllers

Portable Applications

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