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

Part No.:: MCP7940MT-I/MNY

Manufacturer:: Microchip Technology

Package:: 8-WFDFN Exposed Pad

Datasheet:: MCP7940MT-I/MNY.pdf

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

In Stock:: 4055

Quantity:: Add To Cart

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MCP7940MT-I/MNY Specifications

Package/Case:
8-WFDFN Exposed Pad
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/MNY this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including MCP7940MT-I/MNY 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/MNY 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/MNY information

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

MCP7940MT-I/MNY is a real-time clock (RTC) chip manufactured by Microchip Technology, providing accurate timekeeping and alarm functions. It is commonly used in embedded systems and IoT devices where precise time tracking is required.

Basic Introduction:

The MCP7940MT-I/MNY RTC chip integrates a complete time/calendar function with battery backup and a programmable alarm in a small package. It communicates with the microcontroller via the I2C interface, making it easy to interface with various microcontroller platforms.

Application Scenario:

In a simple project, such as a digital clock, the MCP7940MT-I/MNY can be utilized to track and display the current time accurately. Let's explore how to implement this project:

Experiment Steps:

1. Circuit Setup:

Connect the MCP7940MT-I/MNY to your microcontroller board using the I2C bus. Ensure proper connections for power (VCC and GND) and communication (SCL and SDA) pins.

2. Initialization:

Initialize the I2C communication with the MCP7940MT-I/MNY from your microcontroller code. Write initialization routines to configure the RTC settings, such as setting the time format, enabling the oscillator, and setting the initial time.

3. Timekeeping:

Implement functions to read the current time from the MCP7940MT-I/MNY RTC registers periodically. Update your digital clock display with the retrieved time information.

4. Alarm Functionality:

Utilize the alarm functionality of the MCP7940MT-I/MNY to trigger events at specific times. Set an alarm time in the RTC and configure an interrupt on your microcontroller to respond to the alarm trigger.

5. User Interface:

Integrate a user interface, such as an LCD display or LED indicators, to visualize the current time and alarm status. Use GPIO pins of your microcontroller to control and interact with the display components.

6. Power Management:

Ensure the MCP7940MT-I/MNY has a reliable power source, either from the microcontroller board or a backup battery. Implement proper power management techniques to conserve energy and ensure uninterrupted timekeeping.

Considerations:

When working with the MCP7940MT-I/MNY RTC chip, consider the following:

- I2C Addressing: Ensure no address conflicts with other devices on the I2C bus by configuring the address pins of the MCP7940MT-I/MNY appropriately.

- Backup Battery: Install a backup battery to maintain timekeeping functionality during power outages or when the main power source is disconnected.

- Error Handling: Implement error handling routines in your microcontroller code to handle communication errors or RTC malfunctions gracefully.

- Calibration: Periodically calibrate the RTC to compensate for any drift in timekeeping accuracy over extended usage.

By following these steps and considerations, you can create a simple yet effective digital clock project using the MCP7940MT-I/MNY RTC chip and a microcontroller, gaining hands-on experience with real-time clock functionality.

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

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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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