BQ4845S-A4NTRG4

Product Overview

Category:

The BQ4845S-A4NTRG4 belongs to the category of real-time clock (RTC) ICs.

Use:

It is used to keep track of time and date in electronic devices, providing accurate timekeeping functionality.

Characteristics:

Low power consumption
Integrated crystal oscillator
I2C interface for communication
Battery backup for maintaining time during power loss

Package:

The BQ4845S-A4NTRG4 comes in a small outline integrated circuit (SOIC) package.

Essence:

The essence of this product lies in its ability to provide reliable and accurate timekeeping in various electronic applications.

Packaging/Quantity:

The BQ4845S-A4NTRG4 is typically packaged in reels and is available in quantities suitable for production runs.

Specifications

Supply Voltage: 1.8V to 5.5V
Timekeeping Accuracy: ±5 ppm
Operating Temperature Range: -40°C to 85°C
I2C Bus Frequency: 100 kHz or 400 kHz

Detailed Pin Configuration

The detailed pin configuration of the BQ4845S-A4NTRG4 includes the following pins: 1. VBAT - Battery input 2. GND - Ground 3. SDA - I2C data line 4. SCL - I2C clock line 5. X1 - Crystal connection 6. X2 - Crystal connection

Functional Features

Time and date keeping with leap year compensation
Alarm function
Battery switchover and low battery detection
Programmable square wave output

Advantages and Disadvantages

Advantages

Low power consumption extends battery life
Integrated crystal oscillator simplifies design
I2C interface allows for easy integration with microcontrollers

Disadvantages

Limited operating temperature range compared to some other RTC ICs
Requires an external crystal for timekeeping accuracy

Working Principles

The BQ4845S-A4NTRG4 utilizes an internal counter that keeps track of time based on the frequency of an external crystal oscillator. It also incorporates a battery backup system to ensure continuous timekeeping even in the absence of primary power.

Detailed Application Field Plans

The BQ4845S-A4NTRG4 is well-suited for a wide range of applications including: - Consumer electronics - Industrial automation - Automotive systems - Medical devices - Smart home appliances

Detailed and Complete Alternative Models

Some alternative models to the BQ4845S-A4NTRG4 include: - DS3231 - A highly accurate RTC IC with temperature-compensated crystal oscillator - PCF85263A - An ultra-low power RTC IC with I2C-bus interface

In conclusion, the BQ4845S-A4NTRG4 offers reliable timekeeping functionality with low power consumption, making it suitable for diverse electronic applications.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací BQ4845S-A4NTRG4 v technických řešeních

What is the BQ4845S-A4NTRG4?
- The BQ4845S-A4NTRG4 is a real-time clock (RTC) and calendar module designed for use in various technical solutions.
What are the key features of the BQ4845S-A4NTRG4?
- The key features of the BQ4845S-A4NTRG4 include a 32.768 kHz crystal oscillator, battery backup, I2C interface, and alarm functionality.
How is the BQ4845S-A4NTRG4 typically used in technical solutions?
- The BQ4845S-A4NTRG4 is commonly used to provide accurate timekeeping and calendar functions in applications such as industrial automation, consumer electronics, and embedded systems.
What is the operating voltage range of the BQ4845S-A4NTRG4?
- The BQ4845S-A4NTRG4 operates within a voltage range of 1.8V to 5.5V, making it suitable for a wide variety of electronic devices.
Does the BQ4845S-A4NTRG4 support battery backup?
- Yes, the BQ4845S-A4NTRG4 has built-in support for battery backup, ensuring that timekeeping data is preserved in the event of power loss.
Can the BQ4845S-A4NTRG4 generate alarms or interrupts?
- Yes, the BQ4845S-A4NTRG4 can be programmed to generate alarms or trigger interrupts at specified times, making it useful for scheduling and timing applications.
Is the BQ4845S-A4NTRG4 compatible with microcontrollers and other digital logic devices?
- Yes, the BQ4845S-A4NTRG4 is designed to be easily interfaced with microcontrollers and other digital logic devices through its I2C interface.
What is the typical accuracy of the BQ4845S-A4NTRG4's timekeeping function?
- The BQ4845S-A4NTRG4 offers high accuracy timekeeping with typical drift of only a few seconds per month.
Are there any special considerations for PCB layout when using the BQ4845S-A4NTRG4?
- It is recommended to follow the manufacturer's guidelines for PCB layout to ensure optimal performance and minimize interference with the RTC module.
Where can I find detailed technical documentation and application notes for the BQ4845S-A4NTRG4?
- Detailed technical documentation and application notes for the BQ4845S-A4NTRG4 can be found on the manufacturer's website or through authorized distributors.