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

Part No.:: MCP7940MT-I/ST

Manufacturer:: Microchip Technology

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

Datasheet:: MCP7940MT-I/ST.pdf

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

In Stock:: 2944

Quantity:: Add To Cart

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MCP7940MT-I/ST Specifications

Package/Case:
8-TSSOP (0.173, 4.40mm 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/ST this integrated circuit is available in factory sealed anti static packs. at icwhale.com. Please read product page below detail information. including MCP7940MT-I/ST 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/ST 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/ST information

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

MCP7940MT-I/ST is a real-time clock (RTC) chip manufactured by Microchip Technology, widely used in electronic projects requiring precise timekeeping functionalities. It offers various features such as battery backup, alarms, and timestamp capabilities.

Application Scenario:

In a weather station project, MCP7940MT-I/ST can be utilized to timestamp environmental data, such as temperature and humidity readings, ensuring accurate record-keeping and analysis.

Circuit Design:

To incorporate MCP7940MT-I/ST into a weather station project, follow these steps:

1. Circuit Connection:

Connect MCP7940MT-I/ST to the microcontroller, such as Arduino, using the I2C communication protocol. Wire the SDA and SCL pins of MCP7940MT-I/ST to the corresponding pins on the microcontroller (e.g., A4 and A5 on Arduino Uno).

2. Power Supply:

Ensure proper power supply to MCP7940MT-I/ST, including the VCC and ground connections. Optionally, connect a backup battery to the BAT pin to maintain timekeeping functionality during power loss.

3. Initialization:

Initialize the MCP7940MT-I/ST chip in the microcontroller code. Set the current time and date, configure alarm settings if needed, and enable the oscillator.

4. Data Logging:

Read environmental sensor data, such as temperature and humidity, at regular intervals using the microcontroller. Timestamp the data using the MCP7940MT-I/ST RTC to record the exact time of each measurement.

5. Display and Storage:

Display the recorded environmental data on an LCD screen connected to the microcontroller. Optionally, store the data in non-volatile memory, such as an SD card, for long-term analysis and retrieval.

Considerations:

When working with MCP7940MT-I/ST in a project, consider the following aspects:

- Battery Backup: Ensure that a backup battery is connected to maintain timekeeping functionality during power interruptions.

- Accuracy: Calibrate the RTC periodically to maintain accurate timekeeping, especially in long-term applications.

- I2C Communication: Check the I2C address of MCP7940MT-I/ST and avoid conflicts with other devices on the bus.

- Power Consumption: Optimize power management to minimize the overall power consumption of the project, especially if running on battery power.

- Data Integrity: Implement error checking mechanisms to ensure the integrity of timestamped data and prevent data loss or corruption.

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

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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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