DS17485S-5

Product Overview

Category: Integrated Circuit (IC)

Use: The DS17485S-5 is a specialized integrated circuit used for timekeeping and real-time clock functions in various electronic devices.

Characteristics: - High precision timekeeping - Low power consumption - Small form factor - Wide operating temperature range

Package: The DS17485S-5 is available in a compact surface mount package, making it suitable for space-constrained applications.

Essence: The DS17485S-5 is designed to provide accurate timekeeping and real-time clock functionality, ensuring reliable and synchronized time information for electronic devices.

Packaging/Quantity: The DS17485S-5 is typically packaged in reels or tubes, with quantities varying based on customer requirements.

Specifications

The DS17485S-5 offers the following specifications:

• Supply Voltage: 2.7V to 5.5V
• Timekeeping Accuracy: ±2 minutes per month at 25°C
• Operating Temperature Range: -40°C to +85°C
• Clock Frequency: 32.768 kHz
• Battery Backup Voltage: 2.0V to 5.5V

Detailed Pin Configuration

The DS17485S-5 features a pin configuration as follows:

1. VCC - Power supply input
2. GND - Ground connection
3. SDA - Serial Data Line
4. SCL - Serial Clock Line
5. SQW/OUT - Square Wave Output
6. RST - Reset Input
7. X1 - Crystal Connection
8. X2 - Crystal Connection
9. VBAT - Battery Backup Input

Functional Features

The DS17485S-5 offers the following functional features:

• Real-time clock with calendar functionality
• Alarm and timer capabilities
• Non-volatile timekeeping
• Battery backup support
• Programmable square wave output

Advantages and Disadvantages

Advantages: - High precision timekeeping - Low power consumption - Compact form factor - Wide operating temperature range

Disadvantages: - Limited memory capacity for additional data storage - Requires an external crystal for clock accuracy

Working Principles

The DS17485S-5 utilizes a combination of internal registers, counters, and a crystal oscillator to accurately measure and maintain time. It operates by continuously updating the time information based on the crystal oscillator's frequency and adjusting for any deviations.

Detailed Application Field Plans

The DS17485S-5 finds applications in various electronic devices that require accurate timekeeping and real-time clock functionality. Some common application fields include:

1. Consumer Electronics:

   • Digital watches
   • Clock radios
   • Home automation systems

2. Industrial Automation:

   • Programmable logic controllers (PLCs)
   • Data loggers
   • Time-based control systems

3. Automotive:

   • On-board clocks
   • Car audio systems
   • Dashboard displays

4. Medical Devices:

   • Patient monitoring systems
   • Medical equipment with time-sensitive functions

Detailed and Complete Alternative Models

1. DS3231 - Real-Time Clock Module
2. PCF8563 - I2C Real-Time Clock
3. MCP7940N - Battery-Backed RTCC

These alternative models offer similar timekeeping and real-time clock functionalities, providing options for different design requirements.

In conclusion, the DS17485S-5 is a highly reliable integrated circuit designed for accurate timekeeping and real-time clock functions. Its compact size, low power consumption, and wide operating temperature range make it suitable for various electronic devices across different industries. However, it has limited memory capacity and requires an external crystal for clock accuracy. Alternative models such as DS3231, PCF8563, and MCP7940N offer similar functionalities and can be considered based on specific design needs.