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BQ4852YMC-85
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BQ4852YMC-85

Product Overview

Category

BQ4852YMC-85 belongs to the category of integrated circuits (ICs).

Use

This product is primarily used for timekeeping and real-time clock (RTC) applications.

Characteristics

  • Low power consumption
  • High accuracy
  • Small form factor
  • Reliable performance

Package

BQ4852YMC-85 is available in a compact surface-mount package.

Essence

The essence of this product lies in its ability to accurately keep track of time and provide real-time clock functionality.

Packaging/Quantity

BQ4852YMC-85 is typically packaged in reels or tubes, with a standard quantity of 250 units per reel/tube.

Specifications

  • Supply Voltage: 1.8V - 5.5V
  • Timekeeping Accuracy: ±5ppm at 25°C
  • Operating Temperature Range: -40°C to +85°C
  • Interface: I2C
  • Memory: 64 bytes of non-volatile RAM
  • Oscillator: Integrated crystal oscillator

Detailed Pin Configuration

The BQ4852YMC-85 has the following pin configuration:

  1. VCC - Power supply input
  2. GND - Ground
  3. SDA - I2C data line
  4. SCL - I2C clock line
  5. SQW/INT - Square wave output/interrupt pin
  6. X1 - Crystal oscillator input
  7. X2 - Crystal oscillator output
  8. VBAT - Backup battery input

Functional Features

  • Real-time clock with calendar functionality
  • Alarm and interrupt capabilities
  • Battery backup support
  • Automatic leap year compensation
  • Programmable square wave output

Advantages and Disadvantages

Advantages

  • High accuracy timekeeping
  • Low power consumption
  • Compact form factor
  • Integrated crystal oscillator for simplified design

Disadvantages

  • Limited non-volatile RAM capacity (64 bytes)
  • Requires an external backup battery for uninterrupted operation

Working Principles

BQ4852YMC-85 utilizes an integrated crystal oscillator to generate accurate clock signals. It communicates with the host microcontroller through the I2C interface, enabling timekeeping and calendar functionality. The device can be powered by a primary supply voltage or a backup battery, ensuring uninterrupted operation even during power outages.

Detailed Application Field Plans

BQ4852YMC-85 finds applications in various fields, including:

  1. Consumer electronics: Used in digital watches, clocks, and timers.
  2. Industrial automation: Provides precise timekeeping for industrial control systems.
  3. Automotive: Integrated into car dashboards for accurate time display.
  4. Medical devices: Utilized in medical equipment that requires accurate time tracking.
  5. Internet of Things (IoT): Enables time synchronization in IoT devices.

Detailed and Complete Alternative Models

  1. BQ32000 - Real-time clock module with I2C interface and extended non-volatile RAM capacity.
  2. DS3231 - Highly accurate RTC module with temperature compensation and alarm features.
  3. PCF8563 - Low-power RTC module with I2C interface and integrated crystal oscillator.

These alternative models offer similar functionality to BQ4852YMC-85 and can be considered as alternatives based on specific requirements.

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan BQ4852YMC-85 dalam solusi teknis

Sure! Here are 10 common questions and answers related to the application of BQ4852YMC-85 in technical solutions:

  1. Question: What is the BQ4852YMC-85?
    Answer: The BQ4852YMC-85 is a real-time clock (RTC) module with integrated crystal, designed for use in various technical solutions.

  2. Question: What are the key features of the BQ4852YMC-85?
    Answer: The key features of the BQ4852YMC-85 include low power consumption, high accuracy, integrated crystal, I2C interface, and battery backup.

  3. Question: How accurate is the BQ4852YMC-85?
    Answer: The BQ4852YMC-85 offers high accuracy with a typical timekeeping error of only a few seconds per month.

  4. Question: Can the BQ4852YMC-85 operate on battery power?
    Answer: Yes, the BQ4852YMC-85 has a built-in battery backup feature that allows it to continue keeping time even when the main power supply is disconnected.

  5. Question: What is the operating voltage range of the BQ4852YMC-85?
    Answer: The BQ4852YMC-85 operates within a voltage range of 1.8V to 5.5V.

  6. Question: Does the BQ4852YMC-85 support alarm functionality?
    Answer: Yes, the BQ4852YMC-85 supports programmable alarms, allowing you to set specific times for triggering events or notifications.

  7. Question: Can the BQ4852YMC-85 be easily integrated into existing systems?
    Answer: Yes, the BQ4852YMC-85 uses the widely adopted I2C interface, making it compatible with a wide range of microcontrollers and systems.

  8. Question: What is the typical power consumption of the BQ4852YMC-85?
    Answer: The BQ4852YMC-85 has low power consumption, typically drawing less than 1µA in battery backup mode.

  9. Question: Can the BQ4852YMC-85 be used in temperature-sensitive applications?
    Answer: Yes, the BQ4852YMC-85 has a built-in temperature sensor that can be used for temperature compensation or monitoring.

  10. Question: Are there any development resources available for the BQ4852YMC-85?
    Answer: Yes, Texas Instruments provides a datasheet, application notes, and software libraries to assist with the integration and development of solutions using the BQ4852YMC-85.