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

Part No.:: MCP7940M-I/P

Manufacturer:: Microchip Technology

Package:: 8-DIP (0.300, 7.62mm)

Datasheet:: MCP7940M-I/P.pdf

Description:: IC RTC CLK/CALENDAR I2C 8DIP

In Stock:: 2163

Quantity:: Add To Cart

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MCP7940M-I/P Specifications

Package/Case:
8-DIP (0.300, 7.62mm)
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:
Through Hole

MCP7940M-I/P this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including MCP7940M-I/P 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 MCP7940M-I/P 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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MCP7940M-I/P information

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

MCP7940M-I/P is a highly integrated real-time clock (RTC) module with EEPROM and SRAM, designed for easy integration into various applications. It offers accurate timekeeping, alarm functions, and battery backup capabilities, making it ideal for use in a wide range of electronic devices.

Application Scenario:

In a simple project, MCP7940M-I/P can be utilized to create a digital clock with alarm functionality. This project will enable beginners to understand the basic operation of the RTC module and its integration into a microcontroller-based system.

Experiment Setup:

To create a digital clock with alarm using MCP7940M-I/P, follow these steps:

1. Hardware Connections:

Connect MCP7940M-I/P to a microcontroller board, such as Arduino or Raspberry Pi, using I2C communication. Make the following connections:

- Connect SDA pin of MCP7940M-I/P to the corresponding SDA pin on the microcontroller.

- Connect SCL pin of MCP7940M-I/P to the corresponding SCL pin on the microcontroller.

- Ensure proper power supply connections to MCP7940M-I/P and the microcontroller board.

2. Software Integration:

Download and install the necessary libraries for MCP7940M-I/P from the manufacturer's website or through the Arduino IDE library manager.

- Include the RTC library in your Arduino sketch.

- Initialize the RTC module and set the current date and time.

- Implement code to display the current time on an output device, such as an LCD screen or serial monitor.

3. Alarm Functionality:

Implement alarm functionality using MCP7940M-I/P:

- Set the alarm time and date using the RTC library functions.

- Configure the alarm output pin of MCP7940M-I/P to trigger an external interrupt on the microcontroller.

- Write code to handle the alarm interrupt and perform the desired actions, such as activating a buzzer or turning on an LED.

4. Testing:

Upload the code to the microcontroller board and test the digital clock with alarm functionality.

- Verify that the clock displays the correct time and updates accurately.

- Set an alarm and ensure that it triggers at the specified time.

- Test the alarm functionality under various conditions to ensure reliability.

Considerations:

When working with MCP7940M-I/P and designing the project, consider the following:

- Backup Power: Ensure proper backup power supply, such as a coin cell battery, to maintain timekeeping functionality during power loss.

- Pull-Up Resistors: Use appropriate pull-up resistors on the I2C lines to ensure proper communication between the RTC module and the microcontroller.

- Code Optimization: Optimize your code for efficient memory usage and performance, especially when running on resource-constrained microcontroller platforms.

- Error Handling: Implement error handling routines to deal with communication errors or other issues that may arise during operation.

- Expansion Options: Explore additional features and capabilities of MCP7940M-I/P, such as temperature monitoring or additional alarms, for further project enhancements.

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