Maxim Integrated
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DS1685QN-5
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DS1685QN-5

Product Overview

Category

The DS1685QN-5 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in electronic devices for various applications, such as timekeeping, real-time clock (RTC) functions, and system power management.

Characteristics

  • High accuracy timekeeping
  • Low power consumption
  • Small form factor
  • Wide operating temperature range

Package

The DS1685QN-5 is available in a compact quad flat no-lead (QFN) package.

Essence

The essence of DS1685QN-5 lies in its ability to provide accurate timekeeping and RTC functionality while consuming minimal power.

Packaging/Quantity

The DS1685QN-5 is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

  • Supply Voltage: 2.7V to 5.5V
  • Operating Temperature Range: -40°C to +85°C
  • Timekeeping Accuracy: ±2 minutes per month
  • Battery Backup Voltage: 2.0V to 3.6V
  • RTC Alarm Outputs: 2
  • I/O Lines: 8

Detailed Pin Configuration

  1. VCC - Power supply input
  2. GND - Ground
  3. SDA - Serial data line
  4. SCL - Serial clock line
  5. IRQ - Interrupt request output
  6. SQW/OUT - Square wave output
  7. VBAT - Battery backup input
  8. X1 - Crystal oscillator input

Functional Features

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

Advantages and Disadvantages

Advantages

  • High accuracy timekeeping
  • Low power consumption
  • Compact form factor
  • Versatile functionality

Disadvantages

  • Limited I/O lines
  • Reliance on external crystal oscillator for accurate timekeeping

Working Principles

The DS1685QN-5 utilizes an internal oscillator and a real-time clock/calendar circuit to accurately keep track of time. It relies on an external crystal oscillator for precise timekeeping. The device can be powered by a battery backup, ensuring uninterrupted operation even during power outages.

Detailed Application Field Plans

The DS1685QN-5 finds applications in various fields, including:

  1. Consumer electronics: Used in digital cameras, portable media players, and smartwatches for timekeeping and RTC functions.
  2. Industrial automation: Integrated into control systems and data loggers for accurate time synchronization and event scheduling.
  3. Automotive: Employed in vehicle dashboard displays and infotainment systems for reliable timekeeping and alarm functionalities.
  4. Medical devices: Utilized in medical equipment for time-sensitive operations and data logging.

Detailed and Complete Alternative Models

  1. DS3231 - A highly accurate RTC module with temperature compensation.
  2. PCF8563 - An ultra-low power RTC IC with integrated alarm and timer functions.
  3. MCP7940N - A feature-rich RTC IC with battery backup support and I2C interface.

These alternative models offer similar functionalities to the DS1685QN-5 and can be considered as alternatives based on specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací DS1685QN-5 v technických řešeních

Sure! Here are 10 common questions and answers related to the application of DS1685QN-5 in technical solutions:

  1. Question: What is DS1685QN-5?
    Answer: DS1685QN-5 is a specific model of a real-time clock (RTC) chip manufactured by Maxim Integrated. It provides accurate timekeeping and various features for use in technical solutions.

  2. Question: What are the key features of DS1685QN-5?
    Answer: Some key features of DS1685QN-5 include battery backup, alarm functionality, programmable square wave output, and non-volatile memory for storing data.

  3. Question: How can DS1685QN-5 be used in technical solutions?
    Answer: DS1685QN-5 can be used as a reliable timekeeping component in various applications such as industrial automation, embedded systems, data loggers, and IoT devices.

  4. Question: Does DS1685QN-5 require an external power supply?
    Answer: Yes, DS1685QN-5 requires an external power supply for normal operation. It can operate from a wide voltage range, typically between 2.7V and 5.5V.

  5. Question: Can DS1685QN-5 operate without a battery backup?
    Answer: No, DS1685QN-5 requires a battery backup to maintain accurate timekeeping during power outages or when the main power source is disconnected.

  6. Question: How accurate is the timekeeping capability of DS1685QN-5?
    Answer: DS1685QN-5 has a typical accuracy of ±2 minutes per month. However, this accuracy can vary depending on factors like temperature and power supply voltage.

  7. Question: Can DS1685QN-5 generate alarms or interrupts?
    Answer: Yes, DS1685QN-5 has alarm functionality that can be programmed to generate interrupts or trigger external events at specific times or intervals.

  8. Question: Can DS1685QN-5 be easily integrated into microcontroller-based systems?
    Answer: Yes, DS1685QN-5 communicates with the host microcontroller using a simple serial interface (SPI or I2C), making it easy to integrate into various technical solutions.

  9. Question: Does DS1685QN-5 have any non-volatile memory for data storage?
    Answer: Yes, DS1685QN-5 has 64 bytes of non-volatile RAM (NVRAM) that can be used to store important data even when power is disconnected.

  10. Question: Are there any application notes or documentation available for DS1685QN-5?
    Answer: Yes, Maxim Integrated provides detailed datasheets, application notes, and reference designs for DS1685QN-5 on their official website, which can help in understanding its usage in technical solutions.

Please note that the answers provided here are general and may vary depending on the specific requirements and implementation of DS1685QN-5 in different technical solutions.