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Name: BQ4802LYPW
Brand: Texas Instruments
SKU: BQ4802LYPW
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 BQ4802LYPW

Part No.:: BQ4802LYPW

Manufacturer:: Texas Instruments

Package:: 28-TSSOP (0.173, 4.40mm Width)

Datasheet:: BQ4802LYPW.pdf

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

In Stock:: 306

Quantity:: Add To Cart

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BQ4802LYPW Specifications

Package/Case:
28-TSSOP (0.173, 4.40mm Width)
Packaging:
Bulk,Tube
Series:
-
ProductStatus:
Active
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:
2.7V ~ 3.6V
Voltage-SupplyBattery:
2.4V ~ 4V
Current-Timekeeping(Max):
1.5mA (Typ) @ 2.7 V ~ 3.6 V
OperatingTemperature:
0°C ~ 70°C
MountingType:
Surface Mount

BQ4802LYPW this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including BQ4802LYPW 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 BQ4802LYPW 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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BQ4802LYPW information

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Basic introduction and simple engineering application of BQ4802LYPW

BQ4802LYPW is a real-time clock (RTC) chip commonly used in electronic devices for timekeeping applications. It features low power consumption, high accuracy, and integrated battery backup, making it suitable for various projects requiring precise timekeeping functionality.

Application Scenario:

In a digital alarm clock project, BQ4802LYPW can be utilized to maintain accurate timekeeping and trigger alarm events at specific times.

Circuit Design:

To create a digital alarm clock using BQ4802LYPW, follow these steps:

1. RTC Connection:

Connect BQ4802LYPW to the microcontroller, ensuring proper interfacing and communication protocols. Use the I2C interface for communication with the microcontroller.

2. Alarm Setting:

Program the RTC chip to set alarm times using the microcontroller. Configure alarm registers to trigger interrupt signals when the specified time is reached.

3. Display Interface:

Integrate a display module, such as an LCD or LED display, to show current time and alarm settings. Utilize GPIO pins of the microcontroller for interfacing with the display.

4. User Input:

Provide user input options, such as buttons or a keypad, to set and adjust alarm times. Interface these input devices with the microcontroller to enable user interaction.

5. Alarm Activation:

When the RTC triggers the alarm interrupt, activate alarm output signals to trigger sound or visual indicators, such as buzzers or LEDs, to alert the user.

Experiment Steps:

To understand the functionality of BQ4802LYPW and its application in a digital alarm clock project, follow these experimental steps:

1. Hardware Setup:

- Connect BQ4802LYPW to the microcontroller development board according to the datasheet and schematic diagram.

- Connect a display module and user input devices to the microcontroller as per the project requirements.

2. Software Implementation:

- Write firmware code to initialize and configure BQ4802LYPW through the I2C interface.

- Implement functions to set alarm times and handle alarm interrupts in the microcontroller firmware.

- Develop code to interface with the display module and user input devices for displaying time and setting alarms.

3. Testing:

- Upload the firmware code to the microcontroller and power up the system.

- Set alarm times using the user input devices and verify proper functionality.

- Monitor the RTC's accuracy by comparing the displayed time with an external time source.

4. Alarm Activation:

- Trigger alarm events at the set times and observe the activation of alarm indicators.

- Verify the reliability and consistency of alarm activation under different conditions.

Considerations:

When working with BQ4802LYPW and designing the digital alarm clock project, consider the following:

- Power Supply: Ensure stable power supply to the RTC chip and microcontroller to prevent data loss or malfunction.

- Interrupt Handling: Implement robust interrupt handling mechanisms in the microcontroller firmware to manage alarm events accurately.

- Display Legibility: Choose a suitable display module with clear and legible characters for easy readability of time and alarm settings.

- User Interface: Design intuitive user interfaces for setting and adjusting alarm times to enhance user experience.

- Testing and Calibration: Test the system thoroughly and calibrate the RTC for precise timekeeping accuracy.

BQ4802LYPW FAQ

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3. Are the BQ4802LYPW price and inventory displayed accurate?

The price and inventory of BQ4802LYPW 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 BQ4802LYPW?

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 BQ4802LYPW we delivered, we will accept the replacement or return of the BQ4802LYPW 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 BQ4802LYPW.

(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