What is the Additional Feature ?

Name: BQ4845S-A4N
Brand: Texas Instruments
SKU: BQ4845S-A4N
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Texas Instruments BQ4845S-A4N

Part No.:: BQ4845S-A4N

Manufacturer:: Texas Instruments

Package:: 28-SOIC (0.295, 7.50mm Width)

Datasheet:: BQ4845S-A4N.pdf

Description:: IC RTC CLK/CALENDAR PAR 28-SOIC

In Stock:: 465

Quantity:: Add To Cart

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BQ4845S-A4N Specifications

Package/Case:
28-SOIC (0.295, 7.50mm Width)
Packaging:
Tube,Tube
Series:
-
ProductStatus:
Obsolete
Type:
Clock/Calendar
Features:
Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer
MemorySize:
-
TimeFormat:
HH:MM:SS (12/24 hr)
DateFormat:
YY-MM-DD-dd
Interface:
Parallel
Voltage-Supply:
4.75V ~ 5.5V
Voltage-SupplyBattery:
2.3V ~ 4V
Current-Timekeeping(Max):
1.5mA (Typ) @ 4.5 V ~ 5.5 V
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

BQ4845S-A4N this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including BQ4845S-A4N price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for BQ4845S-A4N to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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BQ4845S-A4N information

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Basic introduction and simple engineering application of BQ4845S-A4N

BQ4845S-A4N is an integrated circuit commonly used for real-time clock (RTC) applications. It offers accurate timekeeping capabilities and battery backup, making it suitable for a variety of projects requiring precise timing functions.

Application Scenario:

In this article, we'll explore a simple project using the BQ4845S-A4N to create a digital clock with an alarm function. This project will help beginners understand the basic features of the BQ4845S-A4N and how to implement them in a practical application.

Experiment Steps:

1. Component Setup:

Begin by gathering the necessary components, including the BQ4845S-A4N IC, a microcontroller (such as an Arduino or Raspberry Pi), a crystal oscillator (typically 32.768 kHz), a backup battery, and supporting passive components like resistors and capacitors.

2. Circuit Connection:

Connect the BQ4845S-A4N to the microcontroller using the appropriate communication interface (such as I2C or SPI). Ensure proper connections for power, ground, and communication lines. Refer to the datasheet for the BQ4845S-A4N for pinout details.

3. Programming:

Write a simple program for the microcontroller to initialize communication with the BQ4845S-A4N, set the current time, and configure the alarm functionality if desired. Libraries or code examples provided by the manufacturer can be helpful for this step.

4. Testing:

Upload the program to the microcontroller and test the functionality of the digital clock and alarm. Verify that the timekeeping accuracy meets your requirements and that the alarm triggers at the specified time.

5. Expansion:

Once the basic functionality is confirmed, consider expanding the project by adding features such as temperature compensation, automatic daylight saving time adjustment, or interfacing with external displays or sensors.

Considerations:

When working with the BQ4845S-A4N, keep the following in mind:

- Battery Backup: Ensure the backup battery is properly connected and has sufficient capacity to maintain timekeeping during power outages.

- Communication Protocol: Choose the appropriate communication protocol (I2C, SPI, etc.) based on your microcontroller's capabilities and interface requirements.

- Crystal Oscillator: Use a high-quality crystal oscillator to ensure accurate timekeeping over long periods.

- Power Management: Implement power-saving techniques to minimize energy consumption, especially when running on battery power.

- Error Handling: Implement error checking and handling routines in your code to detect and recover from communication errors or other issues.

By following these steps and considerations, you can create a simple yet functional project using the BQ4845S-A4N and gain valuable experience in real-time clock applications.

BQ4845S-A4N FAQ

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3. Are the BQ4845S-A4N price and inventory displayed accurate?

The price and inventory of BQ4845S-A4N fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.

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6. What is the process for return or replacement of BQ4845S-A4N?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the BQ4845S-A4N we delivered, we will accept the replacement or return of the BQ4845S-A4N only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of BQ4845S-A4N.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations