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Name: MCP7940M-I/MS
Brand: Microchip Technology
SKU: MCP7940M-I/MS
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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Microchip Technology MCP7940M-I/MS

Part No.:: MCP7940M-I/MS

Manufacturer:: Microchip Technology

Package:: 8-TSSOP, 8-MSOP (0.118, 3.00mm Width)

Datasheet:: MCP7940M-I/MS.pdf

Description:: IC RTC CLK/CALENDAR I2C 8-MSOP

In Stock:: 3832

Quantity:: Add To Cart

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MCP7940M-I/MS Specifications

Package/Case:
8-TSSOP, 8-MSOP (0.118, 3.00mm Width)
Packaging:
Tube
Series:
-
ProductStatus:
Active
Type:
Clock/Calendar
Features:
Alarm, Leap Year, Square Wave Output, SRAM
MemorySize:
64B
TimeFormat:
HH:MM:SS (12/24 hr)
DateFormat:
YY-MM-DD-dd
Interface:
I²C, 2-Wire Serial
Voltage-Supply:
1.8V ~ 5.5V
Voltage-SupplyBattery:
-
Current-Timekeeping(Max):
1µA @ 5.5V
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

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MCP7940M-I/MS information

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Basic introduction and simple engineering application of MCP7940M-I/MS

MCP7940M-I/MS is a highly integrated Real-Time Clock (RTC) module, manufactured by Microchip Technology Inc., providing accurate timekeeping and calendar functionality. It features a battery backup, I2C interface, and versatile configuration options, making it suitable for a wide range of applications.

Application Scenario:

In this project, we will demonstrate how to utilize the MCP7940M-I/MS RTC module in a simple digital clock application using an Arduino microcontroller.

Experiment Setup:

To create the digital clock, follow these steps:

1. Hardware Connection:

Connect the MCP7940M-I/MS module to the Arduino board using the I2C communication interface. Ensure proper wiring of SDA and SCL pins to the corresponding pins on the Arduino (usually A4 and A5).

2. Library Installation:

Download and install the necessary libraries for interfacing the MCP7940M-I/MS module with the Arduino. You can find compatible libraries from the Arduino IDE library manager or online repositories.

3. Initialization:

In the Arduino sketch, initialize the RTC module by including the library and defining the I2C address of the MCP7940M-I/MS module. Initialize the RTC object and set the current date and time if required.

4. Display Setup:

Connect an LCD display to the Arduino to visualize the time. Initialize the display in the Arduino sketch and define the necessary pins for data and control lines.

5. Main Loop:

In the main loop of the Arduino sketch, continuously read the time from the MCP7940M-I/MS module using the RTC library functions. Update the time displayed on the LCD accordingly.

6. Optional Features:

You can enhance the digital clock functionality by adding features such as alarm settings, temperature monitoring (if supported by the module), or additional display options.

Considerations:

When working with the MCP7940M-I/MS module, consider the following:

- Power Supply: Ensure a stable power supply to the RTC module, especially if relying on battery backup for timekeeping during power outages.

- I2C Communication: Verify proper I2C communication between the Arduino and the RTC module, checking for any address conflicts or communication errors.

- Accuracy: Calibrate the RTC module if necessary to maintain accurate timekeeping over extended periods.

- Battery Replacement: Periodically check and replace the backup battery of the MCP7940M-I/MS module to prevent data loss and ensure continuous operation.

- Code Optimization: Optimize the Arduino sketch for efficiency, especially if incorporating additional features to minimize memory usage and improve performance.

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