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Name: MCP7940MT-I/SN
Brand: Microchip Technology
SKU: MCP7940MT-I/SN
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 MCP7940MT-I/SN

Part No.:: MCP7940MT-I/SN

Manufacturer:: Microchip Technology

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

Datasheet:: MCP7940MT-I/SN.pdf

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

In Stock:: 2750

Quantity:: Add To Cart

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MCP7940MT-I/SN Specifications

Package/Case:
8-SOIC (0.154, 3.90mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
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

MCP7940MT-I/SN this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including MCP7940MT-I/SN 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 MCP7940MT-I/SN 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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MCP7940MT-I/SN information

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Basic introduction and simple engineering application of MCP7940MT-I/SN

MCP7940MT-I/SN is a real-time clock (RTC) module with integrated EEPROM and SRAM, commonly used in embedded systems for timekeeping and data storage applications. It features battery backup support, I2C interface, and low power consumption.

Application Scenario:

In a simple project, MCP7940MT-I/SN can be utilized to create a digital clock with alarm functionality. This project will help beginners understand the basics of interfacing with an RTC module and implementing time-based functionalities in their projects.

Circuit Design:

To create a digital clock using MCP7940MT-I/SN, follow these steps:

1. Hardware Setup:

Connect MCP7940MT-I/SN module to your microcontroller board using the I2C interface. Ensure proper connections to power (VCC and GND), SDA, and SCL pins.

2. Initialization:

Initialize the I2C communication protocol on your microcontroller. Send initialization commands to configure MCP7940MT-I/SN for timekeeping mode.

3. Time Setting:

Set the current time and date on MCP7940MT-I/SN using the appropriate register writes over the I2C bus. Ensure correct formatting of time and date data.

4. Display Interface:

Integrate a display module, such as an LCD or LED display, to visualize the time and alarm settings. Utilize appropriate GPIO pins on your microcontroller to interface with the display.

5. Alarm Functionality:

Implement alarm functionality using MCP7940MT-I/SN. Set alarm time and configure alarm registers to trigger an interrupt or output signal when the alarm condition is met.

6. User Interaction:

Include user input options, such as buttons or switches, to set and modify the alarm time. Implement firmware logic to handle user inputs and update alarm settings accordingly.

Experiment Steps:

1. Connect MCP7940MT-I/SN module to your microcontroller board according to the datasheet pinout.

2. Write initialization code to configure the I2C communication and initialize MCP7940MT-I/SN for timekeeping mode.

3. Set the current time and date using I2C write commands, ensuring correct data formatting.

4. Interface a display module with your microcontroller and write code to display the current time.

5. Implement alarm functionality by setting the alarm time and configuring alarm registers.

6. Test the project by verifying that the alarm triggers at the set time and the display updates accordingly.

Considerations:

- Power Supply: Ensure stable power supply to MCP7940MT-I/SN to maintain accurate timekeeping, especially when using battery backup.

- I2C Communication: Handle I2C communication errors gracefully in your firmware to prevent data corruption or loss of functionality.

- User Interface: Design a user-friendly interface for setting and interacting with the alarm function to enhance usability.

- Error Handling: Implement error detection and recovery mechanisms to handle any unforeseen issues during operation.

- Testing: Thoroughly test the project under various conditions to ensure reliable performance and functionality.

MCP7940MT-I/SN FAQ

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6. What is the process for return or replacement of MCP7940MT-I/SN?

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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 MCP7940MT-I/SN.

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

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