DS17287-5

Product Overview

Category

DS17287-5 belongs to the category of integrated circuits (ICs).

Use

The DS17287-5 IC is commonly used for timekeeping and real-time clock (RTC) applications.

Characteristics

• The DS17287-5 offers accurate timekeeping with low power consumption.
• It has a wide operating voltage range, making it suitable for various electronic devices.
• The IC incorporates a crystal oscillator circuit for precise timekeeping.
• It features non-volatile memory to retain time and date information during power loss.
• DS17287-5 supports both 12-hour and 24-hour time formats.

Package

The DS17287-5 is available in a compact and durable package, ensuring easy integration into electronic systems. The package type is typically DIP (Dual Inline Package) or SOIC (Small Outline Integrated Circuit).

Essence

The essence of DS17287-5 lies in its ability to provide accurate timekeeping functionality in a compact and low-power package.

Packaging/Quantity

The DS17287-5 is usually packaged in reels or tubes, depending on the manufacturer's preference. The quantity per package varies but is typically around 100 units.

Specifications

• Supply Voltage: 2.7V to 5.5V
• Timekeeping Accuracy: ±2 minutes per month
• Operating Temperature Range: -40°C to +85°C
• Memory Capacity: 64 bytes of non-volatile RAM
• Clock Format: 12-hour or 24-hour
• Interface: I2C (Inter-Integrated Circuit)

Detailed Pin Configuration

The DS17287-5 IC has the following pin configuration:

1. VCC - Power supply input
2. GND - Ground reference
3. SDA - Serial Data Line (I2C)
4. SCL - Serial Clock Line (I2C)
5. SQW/OUT - Square Wave Output
6. VBAT - Backup battery input (optional)

Functional Features

• Real-time clock with calendar functionality
• Automatic leap year compensation
• Alarm and timer functions
• Power-fail detection and switch circuitry
• Battery backup support for timekeeping during power loss
• Programmable square wave output frequency

Advantages and Disadvantages

Advantages

• Accurate timekeeping with low power consumption
• Wide operating voltage range allows compatibility with various systems
• Compact package for easy integration
• Non-volatile memory retains time and date information during power loss

Disadvantages

• Limited memory capacity (64 bytes)
• Requires an external backup battery for uninterrupted timekeeping during power loss

Working Principles

The DS17287-5 utilizes a crystal oscillator circuit to generate precise clock signals. It incorporates non-volatile RAM to store time and date information, ensuring data retention even in the absence of power. The IC communicates with the host system through the I2C interface, enabling control and configuration of various clock-related functions.

Detailed Application Field Plans

The DS17287-5 finds applications in various fields, including:

1. Consumer Electronics: Used in digital watches, alarm clocks, and electronic calendars.
2. Industrial Automation: Integrated into programmable logic controllers (PLCs) for accurate time synchronization.
3. Automotive: Employed in car dashboard clocks and event recorders.
4. Medical Devices: Utilized in medical equipment requiring precise timekeeping, such as patient monitors and infusion pumps.

Detailed and Complete Alternative Models

1. DS1307: Similar real-time clock IC with 56 bytes of non-volatile RAM.
2. PCF8563: RTC IC with integrated temperature compensation and alarm functions.
3. MCP7940N: Real-time clock IC with battery switchover and power-fail detection features.

These alternative models offer similar functionality to the DS17287-5 and can be considered as alternatives based on specific requirements.

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