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Name: BQ4802YDWRG4
Brand: Texas Instruments
SKU: BQ4802YDWRG4
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 BQ4802YDWRG4

Part No.:: BQ4802YDWRG4

Manufacturer:: Texas Instruments

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

Datasheet:: BQ4802YDWRG4.pdf

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

In Stock:: 3966

Quantity:: Add To Cart

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BQ4802YDWRG4 Specifications

Package/Case:
28-SOIC (0.295, 7.50mm Width)
Packaging:
Tape & Reel (TR)
Series:
-
ProductStatus:
Discontinued at Mosen
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:
4.5V ~ 5.5V
Voltage-SupplyBattery:
2.4V ~ 4V
Current-Timekeeping(Max):
1.5mA (Typ) @ 4.5 V ~ 5.5 V
OperatingTemperature:
0°C ~ 70°C
MountingType:
Surface Mount

BQ4802YDWRG4 this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including BQ4802YDWRG4 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 BQ4802YDWRG4 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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BQ4802YDWRG4 information

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Basic introduction and simple engineering application of BQ4802YDWRG4

BQ4802YDWRG4 is a real-time clock (RTC) chip designed by Texas Instruments, offering precise timekeeping and alarm functions, commonly utilized in electronic projects requiring accurate time tracking.

Application Scenario:

In a simple weather station project, BQ4802YDWRG4 can be employed to timestamp weather data readings and trigger certain actions based on predefined time intervals or specific clock events.

Circuit Design:

To create a weather station using BQ4802YDWRG4, follow these steps:

1. Sensor Integration:

Connect weather sensors, such as temperature, humidity, and pressure sensors, to the microcontroller's input pins, ensuring compatibility and proper signal conditioning to ensure accurate readings.

2. RTC Integration:

Integrate BQ4802YDWRG4 into the circuit design, connecting its I2C interface to the microcontroller's I2C bus. Initialize the RTC chip and configure it to generate interrupts at regular intervals for timekeeping and alarm functions.

3. Data Logging:

Utilize non-volatile memory, such as EEPROM or an SD card, to log weather data along with timestamps provided by BQ4802YDWRG4. Implement firmware logic to store sensor readings along with their corresponding timestamps.

4. Display and User Interface:

Integrate a display module, such as an LCD or OLED screen, to visualize real-time weather data and clock information. Implement user interface elements to navigate through menus and settings, utilizing microcontroller GPIO pins for interfacing.

5. Alarm and Control:

Utilize BQ4802YDWRG4's alarm functionality to trigger specific actions, such as activating a warning LED or sounding an alarm buzzer when certain weather conditions are met. Configure the microcontroller to respond to RTC interrupts and execute corresponding tasks.

Experiment Steps:

To experiment with BQ4802YDWRG4's functionality, follow these steps:

1. Setup: Connect BQ4802YDWRG4 to a microcontroller development board, ensuring proper power supply and communication connections.

2. Initialization: Write firmware code to initialize BQ4802YDWRG4 and configure its timekeeping and alarm settings. Test the initialization routine to ensure proper communication with the RTC chip.

3. Timekeeping: Implement code to read the current time from BQ4802YDWRG4 and display it on an external display module. Verify the accuracy of timekeeping by comparing it with a reliable time source, such as an online clock.

4. Alarm Trigger: Set up an alarm condition based on a specific time or interval. Configure the microcontroller to respond to the alarm interrupt generated by BQ4802YDWRG4 and trigger an action, such as toggling an LED or printing a message.

5. Data Logging: Integrate data logging functionality to record sensor readings along with timestamps provided by BQ4802YDWRG4. Store the logged data in non-volatile memory for later analysis and visualization.

Considerations:

When designing the weather station project, consider the following factors:

- Power Supply: Ensure stable power supply to BQ4802YDWRG4 and other components to prevent data loss or malfunction.

- Communication Protocol: Verify compatibility between BQ4802YDWRG4 and the microcontroller's communication protocol (e.g., I2C) to ensure seamless integration and data exchange.

- Interrupt Handling: Implement robust interrupt handling routines to respond to BQ4802YDWRG4's alarm signals promptly and accurately.

- Data Integrity: Implement error-checking mechanisms to ensure the integrity of logged data and prevent corruption due to communication errors or power fluctuations.

- Testing and Calibration: Thoroughly test the weather station prototype under various environmental conditions and calibrate sensor readings to ensure accuracy and reliability.

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6. What is the process for return or replacement of BQ4802YDWRG4?

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(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 BQ4802YDWRG4.

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

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