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Name: BQ32002D
Brand: Texas Instruments
SKU: BQ32002D
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 BQ32002D

Part No.:: BQ32002D

Manufacturer:: Texas Instruments

Package:: 8-SOIC (0.154, 3.90mm Width)

Datasheet:: BQ32002D.pdf

Description:: IC RTC CAL I2C/2-WIRE SER 8SOIC

In Stock:: 2771

Quantity:: Add To Cart

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BQ32002D Specifications

Package/Case:
8-SOIC (0.154, 3.90mm Width)
Packaging:
Bulk,Tube
Series:
-
ProductStatus:
Active
Type:
Clock/Calendar
Features:
Leap Year, Square Wave Output, Trickle-Charger
MemorySize:
-
TimeFormat:
HH:MM:SS (24 hr)
DateFormat:
YY-MM-DD-dd
Interface:
I²C, 2-Wire Serial
Voltage-Supply:
3V ~ 3.6V
Voltage-SupplyBattery:
1.4V ~ 3.6V
Current-Timekeeping(Max):
200µA @ 3.3V
OperatingTemperature:
-40°C ~ 85°C (TA)
MountingType:
Surface Mount

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BQ32002D information

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Basic introduction and simple engineering application of BQ32002D

BQ32002D is a highly accurate, low-power real-time clock (RTC) with integrated temperature compensation and battery backup capability, suitable for a wide range of applications in electronics projects.

Application Scenario:

In projects requiring precise timekeeping and event scheduling, BQ32002D can serve as a reliable timekeeping solution. For example, in data logging systems, IoT devices, and wearable electronics, accurate timekeeping is essential for data synchronization and event timestamping.

Circuit Design:

To incorporate BQ32002D into a project, follow these steps:

1. Connection Setup:

Connect the BQ32002D to the microcontroller or system-on-chip (SoC) using the I2C or SPI communication interface. Ensure proper wiring and configure the communication protocol according to the device datasheet.

2. Power Supply:

Provide a stable power supply to the BQ32002D to ensure uninterrupted operation. Connect the VCC pin to a regulated power source within the specified voltage range and use decoupling capacitors for noise reduction.

3. Crystal Oscillator:

Connect an external crystal oscillator to the X1 and X2 pins of the BQ32002D for accurate timekeeping. The crystal frequency should match the device's specifications to ensure precise timing.

4. Battery Backup:

Connect a backup battery, such as a coin cell battery, to the VBAT pin of the BQ32002D to maintain timekeeping functionality during power loss or system shutdown. Ensure the battery voltage meets the device's requirements and consider implementing low-power modes to prolong battery life.

5. Initialization and Configuration:

Write initialization and configuration routines in the microcontroller firmware to set the time, date, and alarm settings of the BQ32002D according to the project requirements. Utilize the device's register map and programming guide for guidance on configuration registers and bit settings.

Experiment:

To better understand the functionality of BQ32002D, perform the following experiment:

Experiment Title: Real-Time Clock Setup and Calibration

Objective: To set up and calibrate the BQ32002D real-time clock module for accurate timekeeping in a microcontroller-based project.

Materials:

- BQ32002D RTC module

- Microcontroller development board

- Crystal oscillator (matching device specifications)

- Backup battery (coin cell)

- Jumper wires

- Power supply

- Computer with development environment

Procedure:

1. Connect the BQ32002D RTC module to the microcontroller development board using jumper wires. Ensure proper connections for I2C or SPI communication.

2. Connect the crystal oscillator to the X1 and X2 pins of the BQ32002D module.

3. Connect the backup battery to the VBAT pin of the BQ32002D module to provide battery backup.

4. Power up the microcontroller development board and the RTC module.

5. Initialize the microcontroller firmware to communicate with the BQ32002D module via the chosen communication protocol (I2C or SPI).

6. Set the current time and date in the BQ32002D module using the microcontroller firmware.

7. Verify the accuracy of the RTC by periodically reading the time and comparing it with an external reference source, such as a computer clock or a precision timekeeping device.

8. If necessary, calibrate the BQ32002D module by adjusting the trim register values in the firmware to compensate for any timing inaccuracies.

9. Test the RTC module under various conditions, such as temperature variations and power cycling, to ensure reliable timekeeping performance.

10. Integrate the BQ32002D RTC module into the target project and verify its functionality in the intended application scenario.

Conclusion:

Incorporating the BQ32002D real-time clock module into electronic projects enables accurate timekeeping functionality, essential for synchronized data logging, event scheduling, and system operation. By following proper setup and calibration procedures, developers can ensure reliable performance and precise timing in their applications.

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6. What is the process for return or replacement of BQ32002D?

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 BQ32002D we delivered, we will accept the replacement or return of the BQ32002D 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 BQ32002D.

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

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