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M41T81SM6F
Real Time Clock 2.0-5.5V 512 (64x8)M41T81SM6F
Real Time Clock 2.0-5.5V 512 (64x8)
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Manufacturer Part # : M41T81SM6F
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Package/Case: SOIC-8
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Part Status : ACTIVE
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Brand: STMicroelectronics NV
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Product Categories : Real Time Clocks
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Series : M41T81
Quality Assurance
Quality Assurance
All parts procured from our supply chain network undergo a rigorous incoming inspection process. This meticulous inspection ensures that the parts received by our customers are authentic and meet the required standards. Additionally, we maintain detailed records of these inspections to ensure transparency and traceability throughout the supply chain.
Certification
We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.
Shipping & Payment
Shipping & Payment
About Shipping
We generally ship orders within a few business days through reliable shipping carriers such as FedEx, SF, UPS, or DHL. We also have support for other shipping methods. If you would like to inquire about specific shipping details or costs, please don't hesitate to reach out to us.
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If you have a specific payment method in mind or would like to inquire about rates and other details, please feel free to contact us.
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Service & Packaging
Service & Packaging
About After Sales Service
All Parts Extended Quality Guarantee
Initiate the application within 90 days from the shipment date.
Confirm the return or exchange with our staff.
Maintain the goods in their original condition as received.
Lastly, please note that the eligibility for return or exchange of goods is subject to an assessment of the actual condition of the returned items. We will evaluate the received goods before finalizing the return or exchange process. If you have any inquiries or require further assistance regarding returns or exchanges, please don't hesitate to contact us at [email protected]
About packaging
Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.
Example
Tape and Reel
Cut Tape
Tube or Tray
M41T81SM6F DataSheet
Pricing (USD)
| Quantity | Unit Price | Ext. Price |
|---|---|---|
| 1 | $2.723 | $2.72 |
| 10 | $2.383 | $23.83 |
| 30 | $2.180 | $65.40 |
| 100 | $1.976 | $197.60 |
| 500 | $1.882 | $941.00 |
| 1000 | $1.839 | $1,839.00 |
These prices are subject to market fluctuations, and a quote submission is required to obtain the latest prices.
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M41T81SM6F Details
The M41T81SM6F is a serial real-time clock (RTC) with alarm from ST, designed for accurate timekeeping in various applications. This device features an I2C serial interface, automatic leap year compensation up to 2399, and operating voltage range of 2.7V to 5.5V. It also includes battery backup for power fail detection and low power consumption.
Pinout
- SCL (1): I2C Clock Line
- SDA (2): I2C Data Line
- RST (3): Reset Input
- INT (4): Interrupt Output
- VCC (5): Positive Power Supply
- GND (6): Ground
(Tip: For detailed pinout information, please refer to the corresponding datasheet.)
Key Features
- Real-time Clock/Calendar with Alarm: Provides accurate timekeeping and alarm functionality.
- I2C Serial Interface: Offers easy communication with microcontrollers and other devices.
- Automatic Leap Year Compensation up to 2399: Ensures accurate calendar calculations.
- Operating Voltage Range of 2.7V to 5.5V: Suitable for various power supply configurations.
- Battery Backup for Power Fail Detection: Allows the device to maintain its clock and alarm functions during power outages.
- Low Power Consumption: Reduces power consumption and prolongs battery life.
Applications
The M41T81SM6F is suitable for various applications that require accurate timekeeping, such as:
- Embedded Systems: Ideal for embedded systems requiring real-time clock and alarm functionality.
- Industrial Control Systems: Suitable for industrial control systems that need precise timing and alarm capabilities.
- Aerospace and Defense: Can be used in aerospace and defense applications where accurate timekeeping is crucial.
Where to Use
The M41T81SM6F can be used in various environments, including:
- Industrial Settings: Suitable for industrial settings where temperature and humidity conditions may vary.
- Aerospace Environments: Can withstand the extreme temperatures and vibrations found in aerospace applications.
- Automotive Applications: Suitable for automotive applications where reliability and accuracy are crucial.
How to Use
To use the M41T81SM6F, follow these steps:
- Connect the SCL and SDA pins to your microcontroller's I2C interface.
- Apply power to the VCC pin and ground the GND pin.
- Configure the device using the I2C protocol.
Application Circuit
The application circuit diagram for the M41T81SM6F illustrates how to connect the device to an I2C bus. It includes connections for power supply, ground, and communication bus lines, ensuring proper operation and accurate timekeeping.
(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)
Equivalents
- M41T62SM6H: A similar serial real-time clock (RTC) with alarm from ST, offering comparable features and performance.
- DS1307: An alternative RTC module from Maxim Integrated, providing equivalent functionality.
Complementary
The M41T81SM6F can be complemented by the M41T62SM6H, which offers additional features such as higher accuracy and enhanced alarm capabilities, suitable for more demanding applications.
When selecting complementary devices, ensure that their features and specifications align with your specific application requirements for optimal performance and compatibility.
Frequently Asked Questions
Q: What is the accuracy of the M41T81SM6F's real-time clock?
A: The M41T81SM6F features an accuracy of ±2 ppm (parts per million) for its real-time clock.
Q: Can the M41T81SM6F be used in automotive applications?
A: Yes, the M41T81SM6F is suitable for automotive applications where reliable and accurate timekeeping is crucial.
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Operating Range | Industrial | Supply Voltage Min Volt | 2.7 |
| Supply Voltage Max Volt | 5.5 | Operating Temp Min Celsius | -40.0 |
| Operating Temp Max Celsius | 85.0 | ECCN US | EAR99 |
| ECCN EU | NEC | Packing Type | Tape And Reel |
| RoHs compliant | Ecopack1 | Grade | Industrial |
| Package Name | SO-8 |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is M41T81SM6F?
The M41T81SM6F is a low-power, Serial Real-Time Clock (RTC) module manufactured by STMicroelectronics. It is designed for applications requiring accurate timekeeping, such as consumer electronics, industrial equipment, and automotive systems.
How Does M41T81SM6F Work?
The M41T81SM6F operates as a real-time clock by providing accurate time and date information. It features a built-in oscillator and power management functions to ensure reliable timekeeping even during power loss. The module communicates via a serial interface, allowing for easy integration into microcontroller-based systems.
How Many Pins does M41T81SM6F have and What are the Functions of the Pinout Configuration?
The M41T81SM6F is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:
- VDD: Positive power supply pin.
- GND: Ground pin.
- SCL: Serial Clock pin for communication.
- SDA: Serial Data pin for communication.
- VBAT: Backup Battery input pin for maintaining timekeeping during power loss.
- IRQ: Interrupt output pin.
- SQW/OUT: Square Wave or Output pin for additional functionalities.
What are the Pros and Cons of M41T81SM6F?
Pros:
- Low Power Consumption: Operates with low power, suitable for battery-powered devices.
- Accurate Timekeeping: Provides precise time and date information for various applications.
- Serial Interface: Supports easy communication with microcontrollers or other devices.
- Power Management: Includes features for managing power loss situations to maintain timekeeping.
- Small Form Factor: The 8-pin SOIC package is compact and space-efficient.
Cons:
- Limited Functionality: May not have advanced features present in more complex RTC modules.
- External Crystal Required: Requires an external crystal for clock accuracy.
- Programming Overhead: Configuration and setup may require additional programming effort.
Are There Any Equivalents/Alternatives to M41T81SM6F for Recommendation?
- The DS3231 from Maxim Integrated is a comparable real-time clock module with extended temperature range.
- Alternative options to the M41T81SM6F include the PCF8563 from NXP Semiconductors and the RV-8803 from Micro Crystal AG.
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Price details
Prices listed do not include VAT.
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