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Name: BQ4845YS-A4TR
Brand: Texas Instruments
SKU: BQ4845YS-A4TR
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 BQ4845YS-A4TR

Part No.:: BQ4845YS-A4TR

Manufacturer:: Texas Instruments

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

Datasheet:: BQ4845YS-A4TR.pdf

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

In Stock:: 619

Quantity:: Add To Cart

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BQ4845YS-A4TR Specifications

Package/Case:
28-SOIC (0.295, 7.50mm Width)
Packaging:
Tape & Reel (TR),Bulk
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:
4.5V ~ 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

BQ4845YS-A4TR this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including BQ4845YS-A4TR 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 BQ4845YS-A4TR 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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BQ4845YS-A4TR information

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Basic introduction and simple engineering application of BQ4845YS-A4TR

BQ4845YS-A4TR is a real-time clock (RTC) chip widely used in electronic devices for timekeeping and timestamp applications. It offers accurate timekeeping capabilities and a range of features suitable for diverse projects.

Introduction:

The BQ4845YS-A4TR RTC chip is a crucial component in many electronic systems, providing accurate timekeeping functionality. It comes in a compact surface-mount package, making it suitable for integration into various PCB designs.

Key Features:

Integrated RTC with battery backup
Serial interface for communication
Low power consumption
Wide operating voltage range
Temperature-compensated crystal oscillator (TCXO)

Application Scenario:

In this project, we will explore a simple application of BQ4845YS-A4TR in a digital clock circuit. This project will demonstrate how to interface the RTC chip with a microcontroller and display the current time on an LCD screen.

Circuit Design:

To create a digital clock using BQ4845YS-A4TR, follow these steps:

1. Circuit Connections:

Connect the BQ4845YS-A4TR RTC chip to the microcontroller's serial interface. Use appropriate pull-up resistors for the serial communication lines (SCL and SDA). Also, connect the crystal oscillator pins of the RTC chip to an external crystal for clock accuracy.

2. Microcontroller Integration:

Interface the microcontroller with the RTC chip using the I2C or SPI protocol. Implement firmware to initialize the RTC, read the current time, and update it as needed.

3. LCD Display:

Connect an LCD display to the microcontroller to visualize the time. Use the microcontroller's GPIO pins to control the display and send time data for display updates.

4. Power Supply:

Ensure a stable power supply for both the RTC chip and the microcontroller. Use a battery backup for the RTC to maintain timekeeping functionality during power outages.

5. Testing:

Once the circuit is assembled, test the digital clock system. Verify that the RTC chip accurately keeps time, and the microcontroller correctly reads and displays the time on the LCD.

Considerations:

- Crystal Oscillator Selection: Choose a crystal oscillator with the appropriate frequency tolerance for accurate timekeeping.

- Firmware Development: Develop firmware to handle RTC initialization, time reading, and LCD display updates efficiently.

- Power Management: Implement power-saving techniques to minimize power consumption, especially in battery-operated devices.

- User Interface: Enhance the digital clock system with user-friendly features such as setting the time and date via buttons or a touchscreen interface.

- Error Handling: Implement error detection and correction mechanisms to ensure reliable operation in various environmental conditions.

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6. What is the process for return or replacement of BQ4845YS-A4TR?

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 BQ4845YS-A4TR we delivered, we will accept the replacement or return of the BQ4845YS-A4TR 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 BQ4845YS-A4TR.

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

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(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations