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Name: BQ4845S-A4G4
Brand: Texas Instruments
SKU: BQ4845S-A4G4
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-A4G4

Part No.:: BQ4845S-A4G4

Manufacturer:: Texas Instruments

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

Datasheet:: BQ4845S-A4G4.pdf

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

In Stock:: 2312

Quantity:: Add To Cart

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BQ4845S-A4G4 Specifications

Package/Case:
28-SOIC (0.295, 7.50mm Width)
Packaging:
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:
0°C ~ 70°C
MountingType:
Surface Mount

BQ4845S-A4G4 this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including BQ4845S-A4G4 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-A4G4 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-A4G4 information

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Basic introduction and simple engineering application of BQ4845S-A4G4

BQ4845S-A4G4 is a real-time clock (RTC) chip commonly used in electronic devices for timekeeping and timestamping functionalities. It offers precise timekeeping accuracy and various features suitable for a wide range of applications.

Application Scenario:

In electronic gadgets like digital watches, BQ4845S-A4G4 can serve as the RTC, ensuring accurate timekeeping and enabling functions such as alarms and timers.

Project:

To create a simple digital clock using BQ4845S-A4G4, follow these steps:

1. Circuit Connection:

Connect BQ4845S-A4G4 to a microcontroller or microprocessor using the I2C or SPI interface. Ensure proper pull-up resistors are connected to the SDA and SCL lines for communication.

2. Power Supply:

Provide the required power supply to BQ4845S-A4G4 and ensure proper decoupling capacitors are used to filter noise and stabilize voltage levels.

3. Initialization:

Write initialization code to configure BQ4845S-A4G4 according to the desired timekeeping format (e.g., 24-hour or 12-hour), alarm settings, and other functionalities.

4. Time Display:

Interface a display module, such as an LCD or LED display, with the microcontroller to show the current time read from BQ4845S-A4G4. Update the display periodically to reflect the accurate time.

5. User Interaction:

Add buttons or switches to allow user interaction, such as setting the time or activating alarms. Program the microcontroller to respond to these inputs and communicate with BQ4845S-A4G4 accordingly.

Experiment:

To verify the functionality of the digital clock, perform the following experiment:

1. Setup:

Connect BQ4845S-A4G4 to a microcontroller development board and a display module according to the circuit connection diagram.

2. Initialization:

Write and upload the initialization code to the microcontroller, configuring BQ4845S-A4G4 with the desired settings.

3. Time Display:

Run the program on the microcontroller and observe the display module. Ensure that the current time is accurately displayed and updated in real-time.

4. User Interaction:

Test the functionality of user interaction features, such as setting the time or activating alarms, by pressing the corresponding buttons or switches.

5. Validation:

Verify the accuracy of timekeeping by comparing the displayed time with an external time source, such as a smartphone or computer clock.

Considerations:

When designing the digital clock project, consider the following aspects:

- Power Consumption: Optimize the code and circuit design to minimize power consumption, extending the battery life if applicable.

- Display Interface: Choose a suitable display module and interface protocol compatible with the microcontroller and BQ4845S-A4G4.

- Error Handling: Implement error handling mechanisms in the firmware to handle communication errors or RTC malfunctions gracefully.

- User Experience: Design the user interface for intuitive operation and provide clear feedback for user actions and system status.

- Testing and Calibration: Test the digital clock under various conditions and calibrate if necessary to ensure reliable timekeeping performance.

BQ4845S-A4G4 FAQ

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3. Are the BQ4845S-A4G4 price and inventory displayed accurate?

The price and inventory of BQ4845S-A4G4 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-A4G4?

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-A4G4 we delivered, we will accept the replacement or return of the BQ4845S-A4G4 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-A4G4.

(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