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Name: BQ3285LFSS-A1TRG4
Brand: Texas Instruments
SKU: BQ3285LFSS-A1TRG4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Texas Instruments BQ3285LFSS-A1TRG4

Part No.:: BQ3285LFSS-A1TRG4

Manufacturer:: Texas Instruments

Package:: 24-SSOP (0.154, 3.90mm Width)

Datasheet:: BQ3285LFSS-A1TRG4.pdf

Description:: IC RTC CLK/CALENDAR PAR 24-QSOP

In Stock:: 2257

Quantity:: Add To Cart

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BQ3285LFSS-A1TRG4 Specifications

Package/Case:
24-SSOP (0.154, 3.90mm Width)
Packaging:
Tape & Reel (TR)
Series:
-
ProductStatus:
Obsolete
Type:
Clock/Calendar
Features:
Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output
MemorySize:
242B
TimeFormat:
HH:MM:SS (12/24 hr)
DateFormat:
YY-MM-DD-dd
Interface:
Parallel
Voltage-Supply:
2.7V ~ 5.5V
Voltage-SupplyBattery:
2.4V ~ 4V
Current-Timekeeping(Max):
100µA @ 3V
OperatingTemperature:
0°C ~ 70°C
MountingType:
Surface Mount

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BQ3285LFSS-A1TRG4 information

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Basic introduction and simple engineering application of BQ3285LFSS-A1TRG4

BQ3285LFSS-A1TRG4 is a real-time clock (RTC) module manufactured by Texas Instruments, offering accurate timekeeping and versatile functionality suitable for a wide range of applications. It integrates a highly precise oscillator, calendar, alarm functions, and backup power supply management.

Application Scenario:

In embedded systems and IoT devices, BQ3285LFSS-A1TRG4 can be utilized for timekeeping purposes, scheduling tasks, data logging, and event triggering based on precise time information.

Circuit Design:

To incorporate BQ3285LFSS-A1TRG4 into a project, follow these steps:

1. Connection Setup:

Connect BQ3285LFSS-A1TRG4 to the microcontroller or host system via the I2C or SPI interface. Ensure proper wiring and address configuration according to the communication protocol requirements.

2. Initialization:

Initialize BQ3285LFSS-A1TRG4 by setting the current time, date, and alarm parameters. Use the provided register map and communication protocol specifications to access and configure the RTC module.

3. Timekeeping:

Utilize the RTC functionality of BQ3285LFSS-A1TRG4 to keep track of time with high accuracy. Read the current time and date registers periodically to synchronize system operations.

4. Alarm Configuration:

Set up alarms using BQ3285LFSS-A1TRG4 to trigger events or wake up the system at specific times. Configure the alarm registers and interrupt functionality to respond to alarm events.

5. Backup Power Management:

Implement backup power supply management for BQ3285LFSS-A1TRG4 to ensure uninterrupted timekeeping during main power loss. Connect a backup battery or supercapacitor to the designated pins and configure backup power switching logic.

Experiment:

To understand the functionality of BQ3285LFSS-A1TRG4 better, conduct the following experiment:

Experiment Title: Real-Time Clock Setup and Timekeeping

Materials:

- BQ3285LFSS-A1TRG4 module

- Microcontroller or development board with I2C/SPI interface

- Breadboard and jumper wires

- Backup battery or supercapacitor (optional)

Procedure:

1. Connect BQ3285LFSS-A1TRG4 to the microcontroller or development board according to the datasheet and communication protocol specifications. Ensure proper power supply connections.

2. Initialize the RTC module by writing the current time and date to the appropriate registers. Use the provided libraries or communication protocols supported by the microcontroller.

3. Read the time and date registers from BQ3285LFSS-A1TRG4 and display them on a serial monitor or LCD display connected to the microcontroller.

4. Configure an alarm on BQ3285LFSS-A1TRG4 to trigger an interrupt at a specific time. Implement the interrupt service routine on the microcontroller to respond to the alarm event.

5. Optionally, simulate a power loss scenario by disconnecting the main power supply to the RTC module. Verify that the backup power supply maintains timekeeping functionality.

Conclusion:

Through this experiment, you've learned how to integrate BQ3285LFSS-A1TRG4 into a project for accurate timekeeping and alarm functionality. Explore further applications and optimizations to leverage the full potential of the RTC module in your projects.

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6. What is the process for return or replacement of BQ3285LFSS-A1TRG4?

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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 BQ3285LFSS-A1TRG4.

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

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