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Name: MCP7940MT-I/STVAO
Brand: Microchip Technology
SKU: MCP7940MT-I/STVAO
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Microchip Technology MCP7940MT-I/STVAO

Part No.:: MCP7940MT-I/STVAO

Manufacturer:: Microchip Technology

Package:: 8-TSSOP (0.173, 4.40mm Width)

Datasheet:: MCP7940MT-I/STVAO.pdf

Description:: IC RTC CAL I2C/2-WIRE SER 8TSSOP

In Stock:: 2102

Quantity:: Add To Cart

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MCP7940MT-I/STVAO Specifications

Package/Case:
8-TSSOP (0.173, 4.40mm Width)
Packaging:
Tape & Reel (TR)
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:
-
Current-Timekeeping(Max):
1.2µA @ 3.3V
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

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MCP7940MT-I/STVAO information

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

MCP7940MT-I/STVAO is a highly integrated Real-Time Clock (RTC) module manufactured by Microchip Technology, offering precise timekeeping functionality for various electronic applications. This device is commonly utilized in embedded systems, IoT devices, and consumer electronics where accurate timekeeping is essential.

Overview:

The MCP7940MT-I/STVAO RTC module integrates a real-time clock/calendar, alarm functions, battery backup, and non-volatile memory in a compact package. It operates over a wide voltage range, making it suitable for battery-powered and low-power applications. Additionally, it communicates via the I2C serial interface, facilitating easy integration into existing microcontroller-based designs.

Application Scenario:

In this educational project, we will explore a simple application of the MCP7940MT-I/STVAO RTC module by designing a digital clock using an Arduino microcontroller.

Experimental Setup:

To build the digital clock, follow these steps:

1. Hardware Setup:

- Connect the MCP7940MT-I/STVAO module to the Arduino microcontroller using the I2C interface. Ensure proper wiring and connection to the SDA and SCL pins of the Arduino.

- Provide power to the MCP7940MT-I/STVAO module. It can be powered from the Arduino's 5V pin or an external power supply if necessary.

2. Software Implementation:

- Install the necessary Arduino libraries for interfacing with the MCP7940MT-I/STVAO module. These libraries enable communication and control of the RTC functions.

- Write Arduino code to initialize the RTC module, set the current time, and continuously update the digital clock display based on the RTC time.

3. Display Integration:

- Connect an LCD display to the Arduino microcontroller to visualize the digital clock output. Utilize the appropriate Arduino pins for interfacing with the display.

- Write code to display the current time obtained from the MCP7940MT-I/STVAO RTC module onto the LCD display in a user-friendly format (e.g., HH:MM:SS).

4. Testing and Calibration:

- Upload the Arduino code to the microcontroller and power on the system. Verify that the digital clock displays the correct time as per the RTC module.

- Optionally, implement calibration routines to fine-tune the clock accuracy by adjusting the RTC's internal crystal oscillator frequency.

5. Enhancements:

- Explore additional features such as alarm functions, temperature sensing, or event logging provided by the MCP7940MT-I/STVAO RTC module and integrate them into the digital clock application for enhanced functionality.

Conclusion:

In conclusion, the MCP7940MT-I/STVAO RTC module offers a reliable solution for precise timekeeping in various electronic projects. By following the provided experimental steps, students and beginners can gain hands-on experience in integrating and utilizing this module for building digital clocks and other time-sensitive applications.

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

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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/STVAO.

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