What is the Additional Feature ?

Name: BQ4842YMA-85
Brand: Texas Instruments
SKU: BQ4842YMA-85
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 BQ4842YMA-85

Part No.:: BQ4842YMA-85

Manufacturer:: Texas Instruments

Package:: 32-DIP Module (0.610, 15.49mm)

Datasheet:: BQ4842YMA-85.pdf

Description:: IC RTC CLK/CALENDAR PAR 32-DIP

In Stock:: 3711

Quantity:: Add To Cart

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BQ4842YMA-85 Specifications

Package/Case:
32-DIP Module (0.610, 15.49mm)
Packaging:
Tube
Series:
-
ProductStatus:
Obsolete
Type:
Clock/Calendar
Features:
Alarm, Supervisor, Watchdog Timer
MemorySize:
-
TimeFormat:
HH:MM:SS:hh (24 hr)
DateFormat:
YY-MM-DD-dd
Interface:
Parallel
Voltage-Supply:
4.5V ~ 5.5V
Voltage-SupplyBattery:
-
Current-Timekeeping(Max):
4mA @ 4.5 V ~ 5.5 V
OperatingTemperature:
0°C ~ 70°C
MountingType:
Through Hole

BQ4842YMA-85 this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including BQ4842YMA-85 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 BQ4842YMA-85 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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BQ4842YMA-85 information

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Basic introduction and simple engineering application of BQ4842YMA-85

BQ4842YMA-85 is a real-time clock (RTC) chip designed for precise timekeeping applications in various electronic systems. It features a battery backup function, non-volatile storage for time and date information, and a simple serial interface for communication with microcontrollers.

Application Scenario:

In electronic projects requiring accurate timekeeping, such as data logging systems or event scheduling devices, BQ4842YMA-85 can be utilized to maintain precise time and date information even in the absence of external power.

Circuit Design:

To incorporate BQ4842YMA-85 into a project, follow these steps:

1. Connection to Microcontroller:

Connect the serial communication pins of BQ4842YMA-85 (such as SDA and SCL) to the corresponding pins on the microcontroller. Ensure proper pull-up resistors are used on the communication lines for reliable operation.

2. Power Supply:

Provide a stable power supply voltage (typically 3.3V or 5V) to the VCC pin of BQ4842YMA-85. Additionally, connect a backup battery to the BAT pin to maintain timekeeping functionality during power outages.

3. Initialization:

In the firmware of the microcontroller, initialize the communication interface (I2C or SPI) and configure the necessary settings for BQ4842YMA-85, such as setting the current time and date, and choosing the desired timekeeping format (12-hour or 24-hour).

4. Reading and Updating Time:

Implement routines in the microcontroller firmware to periodically read the time and date information from BQ4842YMA-85 and update it as needed. This ensures that the system maintains accurate timekeeping.

5. Alarm Functionality:

Utilize the alarm features of BQ4842YMA-85 to trigger specific actions or events at predetermined times. Program the microcontroller to respond to alarm interrupts generated by the RTC chip.

Considerations:

When using BQ4842YMA-85 in a project, consider the following:

- Backup Battery Life: Choose a backup battery with sufficient capacity to maintain timekeeping for an extended period without external power.

- Communication Protocol: Ensure compatibility between the communication protocol used by the microcontroller and BQ4842YMA-85 (I2C or SPI).

- Time Accuracy: Calibrate the RTC chip periodically to compensate for drift and maintain accurate timekeeping over long durations.

- Low Power Operation: Implement power-saving techniques in the firmware to minimize power consumption and prolong battery life in battery-powered applications.

- Error Handling: Handle communication errors and invalid data responses from BQ4842YMA-85 gracefully in the firmware to ensure system reliability.

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6. What is the process for return or replacement of BQ4842YMA-85?

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 BQ4842YMA-85 we delivered, we will accept the replacement or return of the BQ4842YMA-85 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 BQ4842YMA-85.

(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