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Name: BQ4802LYDSH
Brand: Texas Instruments
SKU: BQ4802LYDSH
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 BQ4802LYDSH

Part No.:: BQ4802LYDSH

Manufacturer:: Texas Instruments

Package:: 28-SOIC (0.345, 8.77mm Width) with SNAPHAT Sockets

Datasheet:: BQ4802LYDSH.pdf

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

In Stock:: 3118

Quantity:: Add To Cart

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BQ4802LYDSH Specifications

Package/Case:
28-SOIC (0.345, 8.77mm Width) with SNAPHAT Sockets
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:
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

BQ4802LYDSH this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including BQ4802LYDSH 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 BQ4802LYDSH 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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BQ4802LYDSH information

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Basic introduction and simple engineering application of BQ4802LYDSH

BQ4802LYDSH is an integrated circuit (IC) commonly used in electronic projects for timekeeping and real-time clock (RTC) applications. It offers accurate timekeeping capabilities with low power consumption, making it suitable for battery-powered devices and systems.

Application Scenario:

In various electronic projects, BQ4802LYDSH can be utilized for timekeeping and scheduling tasks. For instance, it can be integrated into data loggers, digital clocks, or IoT devices to maintain accurate time records and synchronize activities.

Circuit Design:

To incorporate BQ4802LYDSH into a project, follow these steps:

1. Connection to Microcontroller:

Connect the SDA (Serial Data) and SCL (Serial Clock) pins of BQ4802LYDSH to the corresponding pins of your microcontroller, such as Arduino or Raspberry Pi, for communication. Ensure proper pull-up resistors are connected to these lines.

2. Power Supply:

Provide power to BQ4802LYDSH by connecting the VCC (Power Supply) pin to a suitable voltage source, typically between 1.8V to 5.5V, depending on the specific device requirements.

3. Crystal Oscillator:

Connect an external crystal oscillator or resonator to the X1 and X2 pins of BQ4802LYDSH to ensure accurate timekeeping. The recommended frequency for the crystal is typically 32.768 kHz.

4. Backup Battery:

To maintain timekeeping functionality during power outages or when the main power source is disconnected, connect a backup battery to the VBAT (Backup Battery) pin of BQ4802LYDSH. Ensure the battery voltage meets the specified requirements.

5. Initialization and Configuration:

Write appropriate initialization and configuration routines in your microcontroller firmware to communicate with BQ4802LYDSH. This includes setting the time, date, and alarm functions as per your project requirements.

Experiment:

To demonstrate the functionality of BQ4802LYDSH, you can create a simple digital clock using an Arduino board and an LCD display. Follow these steps:

Step 1: Hardware Setup

- Connect the SDA and SCL pins of BQ4802LYDSH to the corresponding pins (A4 and A5) on the Arduino board. - Connect the VCC pin of BQ4802LYDSH to the 5V output of the Arduino board. - Connect the GND pin of BQ4802LYDSH to the ground (GND) of the Arduino board. - Connect a 32.768 kHz crystal oscillator between the X1 and X2 pins of BQ4802LYDSH. - Connect a backup battery (e.g., CR2032) to the VBAT pin of BQ4802LYDSH.

Step 2: Software Implementation

- Write a sketch in the Arduino IDE to initialize the RTC module and read the current time from BQ4802LYDSH. - Display the time on an LCD display connected to the Arduino board. - Implement functions to update the time and handle alarm events if desired.

Step 3: Testing

- Upload the sketch to the Arduino board and power it on. - Verify that the current time is displayed correctly on the LCD screen. - Test the functionality by manually setting the time and verifying if it updates accurately. - Test the alarm feature by setting an alarm time and ensuring the alarm triggers correctly.

Considerations:

When working with BQ4802LYDSH, consider the following:

- Power Supply Stability: Ensure stable power is supplied to the IC to maintain accurate timekeeping.

- Crystal Selection: Choose a high-quality crystal oscillator for reliable clock accuracy.

- Backup Battery Maintenance: Monitor the backup battery voltage regularly to prevent data loss during power interruptions.

- Communication Protocol: Understand the I2C communication protocol for interfacing with BQ4802LYDSH in your project.

- Firmware Optimization: Optimize firmware code for efficient timekeeping and alarm handling to minimize power consumption and improve performance.

BQ4802LYDSH FAQ

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3. Are the BQ4802LYDSH price and inventory displayed accurate?

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6. What is the process for return or replacement of BQ4802LYDSH?

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 BQ4802LYDSH we delivered, we will accept the replacement or return of the BQ4802LYDSH 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 BQ4802LYDSH.

(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