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Name: MCP7940N-I/SN
Brand: Microchip Technology
SKU: MCP7940N-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 MCP7940N-I/SN

Part No.:: MCP7940N-I/SN

Manufacturer:: Microchip Technology

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

Datasheet:: MCP7940N-I/SN.pdf

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

In Stock:: 3382

Quantity:: Add To Cart

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MCP7940N-I/SN Specifications

Package/Case:
8-SOIC (0.154, 3.90mm Width)
Packaging:
Tube
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 ~ 85°C
MountingType:
Surface Mount

MCP7940N-I/SN this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including MCP7940N-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 MCP7940N-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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MCP7940N-I/SN information

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MCP7940N-I/SN Typical application Circuitry

MCP7940N-I SN

The MCP7940N-I/SN chip serves as a real-time clock/calendar (RTCC), an essential component that plays a pivotal role in timekeeping within embedded systems.

Use Cases

In a world where time is a crucial parameter, this chip finds its home in various applications, such as home automation systems, office equipment, and industrial machinery, where accurate time tracking and management are indispensable.

Characteristics

- Accuracy: The chip is renowned for its precision in timekeeping.

- Low Power Consumption: Operates efficiently, ensuring minimal energy usage.

- Versatility: Provides a variety of features that enable it to be adapted to a range of applications.

Application in Home Automation Systems

1. Power Connection:

- Process: For MCP7940N-I/SN to function optimally, Pin 8 (VCC) should be connected to a 3.3V power source. It's vital to ensure a stable and clean power supply to maintain accuracy.

- Considerations: Be mindful of the voltage levels, as an inappropriate voltage can lead to malfunction or damage.

2. Grounding:

- Ground Connection: The circuit's ground is connected to Pin 5 (VSS). This is a critical step to complete the power circuit and to provide a reference voltage level for the chip's operation.

- Precautions: Ensure a secure and low-resistance connection to avoid potential instabilities in the chip's operation.

3. I2C Communication:

- Data Line: Pin 6 (SDA) serves as the data line for I2C communication and should be connected to the microcontroller's corresponding SDA pin. This enables data exchange, including time data.

- Clock Line: Pin 7 (SCL) is the clock line for I2C communication, connected to the SCL pin on the microcontroller, synchronizing data transfer.

4. Configuring Time:

- Battery Backup: Pin 3 (VBAT) can be connected to a 3V lithium coin battery. By doing this, timekeeping is guaranteed to continue even if the main power source is turned off.

- Implementation: Ensure battery polarity is correct to avoid potential damage or reduced lifespan.

Considerations in Circuit Design

1. Noise Reduction: Employ filtering capacitors to minimize voltage fluctuations and noise, ensuring the MCP7940N-I/SN operates with enhanced precision and stability.

2. I2C Pull-up Resistors: Incorporate appropriate pull-up resistors on the SDA and SCL lines to facilitate reliable communication between the chip and the microcontroller.

3. Battery Backup: Assess the battery's lifespan and replacement accessibility, ensuring continuous and uninterrupted timekeeping.

MCP7940N-I/SN stands as a beacon of precision and reliability in the domain of real-time clock/calendar chips. When embedded with meticulous attention to power, grounding, communication, and backup protocols, it transforms the operational efficiency of home automation systems. A synergy of noise reduction strategies, judicious placement of I2C pull-up resistors, and a reliable battery backup regime encapsulate a design ethos where precision, reliability, and longevity reign supreme.

MCP7940N-I/SN FAQ

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6. What is the process for return or replacement of MCP7940N-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 MCP7940N-I/SN.

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

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