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Name: MCP7940NT-E/MS
Brand: Microchip Technology
SKU: MCP7940NT-E/MS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Microchip Technology MCP7940NT-E/MS

Part No.:: MCP7940NT-E/MS

Manufacturer:: Microchip Technology

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

Datasheet:: MCP7940NT-E/MS.pdf

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

In Stock:: 3654

Quantity:: Add To Cart

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MCP7940NT-E/MS Specifications

Package/Case:
8-TSSOP, 8-MSOP (0.118, 3.00mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
Automotive, AEC-Q100
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:
1.3V ~ 5.5V
Current-Timekeeping(Max):
1.2µA @ 3.3V
OperatingTemperature:
-40°C ~ 125°C
MountingType:
Surface Mount

MCP7940NT-E/MS this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including MCP7940NT-E/MS 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 MCP7940NT-E/MS 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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MCP7940NT-E/MS information

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Basic introduction and simple engineering application of MCP7940NT-E/MS

MCP7940NT-E/MS is a highly integrated real-time clock (RTC) module manufactured by Microchip Technology. It offers accurate timekeeping and calendar functionality, making it suitable for a wide range of applications in embedded systems and electronic devices.

Introduction:

The MCP7940NT-E/MS RTC module integrates a real-time clock/calendar with battery backup, SRAM, and a 64-byte EEPROM. It operates over a wide voltage range and features low-power consumption, making it ideal for battery-powered applications requiring precise timekeeping.

Application Scenario:

In a simple project, MCP7940NT-E/MS can be utilized to create a digital clock with alarm functionality using a microcontroller. This project provides an excellent opportunity for beginners to understand the basics of interfacing an RTC module with a microcontroller and implementing time-based functionalities.

Experiment Setup:

To create a digital clock with alarm using MCP7940NT-E/MS and a microcontroller, follow these steps:

1. Hardware Connection:

Connect the MCP7940NT-E/MS module to the microcontroller using the I2C communication protocol. Ensure proper wiring of SDA (Serial Data), SCL (Serial Clock), and other necessary pins according to the datasheet of both the module and the microcontroller.

2. Initialization:

Initialize the I2C communication interface on the microcontroller and configure it to communicate with the MCP7940NT-E/MS module. Send commands to set the current time and date, as well as alarm settings, if desired.

3. Time Display:

Read the time and date information from the MCP7940NT-E/MS module via I2C and display it on an output device, such as an LCD screen or a serial monitor. Ensure proper formatting of the displayed information for readability.

4. Alarm Functionality:

Implement alarm functionality by periodically checking the current time against the set alarm time. When the alarm condition is met, trigger an alert, such as a sound or visual indication, using suitable output peripherals connected to the microcontroller.

5. User Interaction:

Integrate user interaction mechanisms, such as buttons or a keypad, to allow users to set the current time, date, and alarm settings. Implement corresponding firmware logic to handle user inputs and update the MCP7940NT-E/MS module accordingly.

Considerations:

When designing the digital clock with alarm project, consider the following factors:

- Power Supply: Ensure stable power supply to both the microcontroller and the MCP7940NT-E/MS module, especially if battery-powered operation is intended.

- I2C Communication: Pay attention to the I2C bus configuration and address selection to avoid conflicts with other devices on the bus.

- Error Handling: Implement error handling routines to address communication errors or module malfunctions gracefully.

- Alarm Accuracy: Fine-tune the alarm triggering mechanism to achieve desired accuracy and reliability in alarm activation.

- User Interface: Design an intuitive user interface for setting time and alarm parameters to enhance user experience and usability.

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6. What is the process for return or replacement of MCP7940NT-E/MS?

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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.

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