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Name: BQ4845YS-A4NTR
Brand: Texas Instruments
SKU: BQ4845YS-A4NTR
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-A4NTR

Part No.:: BQ4845YS-A4NTR

Manufacturer:: Texas Instruments

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

Datasheet:: BQ4845YS-A4NTR.pdf

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

In Stock:: 16603

Quantity:: Add To Cart

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BQ4845YS-A4NTR 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:
-40°C ~ 85°C
MountingType:
Surface Mount

BQ4845YS-A4NTR this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including BQ4845YS-A4NTR 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-A4NTR 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-A4NTR information

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Basic introduction and simple engineering application of BQ4845YS-A4NTR

BQ4845YS-A4NTR is a real-time clock (RTC) chip commonly used in electronic systems for timekeeping and timestamping applications. It offers accurate timekeeping functionality with low power consumption, making it suitable for battery-powered devices and embedded systems.

Application Scenario:

In a digital alarm clock project, BQ4845YS-A4NTR can be utilized to keep track of the current time and trigger alarm events at specified times.

Circuit Design:

To create a digital alarm clock using BQ4845YS-A4NTR, follow these steps:

1. RTC Connection:

Connect BQ4845YS-A4NTR to the microcontroller or system-on-chip (SoC) using the appropriate communication interface, such as I2C or SPI. Ensure proper wiring and pull-up resistors as per the datasheet recommendations.

2. Display Integration:

Integrate a display module, such as an LCD or OLED display, to visualize the current time and set alarm parameters. Utilize GPIO pins of the microcontroller, like pin PA0 for data and pin PA1 for clock in I2C communication, to interface with the display.

3. User Input:

Include user input components, such as buttons or a keypad, to set the alarm time and configure other clock settings. Connect these input devices to the GPIO pins of the microcontroller for detecting user interactions.

4. Alarm Triggering:

Implement firmware logic to monitor the current time provided by BQ4845YS-A4NTR and compare it with the set alarm time. When the alarm time matches the current time, trigger an alarm event, such as activating a buzzer or turning on an LED.

5. Power Management:

Design power supply circuitry to provide stable voltage levels to BQ4845YS-A4NTR and other components of the digital alarm clock. Incorporate low-power modes and battery backup options for uninterrupted timekeeping, especially during power outages.

Considerations:

When designing the digital alarm clock circuit, consider the following aspects:

- RTC Accuracy: Ensure that BQ4845YS-A4NTR provides sufficient timekeeping accuracy for the intended application, considering factors like temperature drift and aging effects.

- Display Readability: Choose a display module with appropriate size and readability for the user to view the time and alarm settings comfortably.

- User Interface Intuitiveness: Design the user interface to be intuitive and user-friendly for setting alarms and adjusting clock settings without confusion.

- Alarm Sound Level: Select a buzzer or alarm indicator with an appropriate sound level to alert the user effectively without being too loud or too soft.

- Power Consumption: Optimize the firmware and hardware design to minimize power consumption, especially in battery-powered applications, to prolong battery life.

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6. What is the process for return or replacement of BQ4845YS-A4NTR?

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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 BQ4845YS-A4NTR.

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

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(1)Inform us within 90 days

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