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Name: M41ST85WMX6TR
Brand: STMicroelectronics
SKU: M41ST85WMX6TR
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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STMicroelectronics M41ST85WMX6TR

Part No.:: M41ST85WMX6TR

Manufacturer:: STMicroelectronics

Package:: 28-SOIC (0.295, 7.50mm Width)

Datasheet:: M41ST85WMX6TR.pdf

Description:: IC RTC CLK/CALENDAR I2C 28-SOIC

In Stock:: 2455

Quantity:: Add To Cart

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Basic introduction and simple engineering application of M41ST85WMX6TR

M41ST85WMX6TR is a serial real-time clock (RTC) chip manufactured by STMicroelectronics. It provides accurate timekeeping and calendar functions, making it suitable for a wide range of applications requiring precise timekeeping, such as industrial automation systems, consumer electronics, and medical devices.

Introduction:

The M41ST85WMX6TR RTC chip features a built-in battery backup circuitry, ensuring that the clock continues to operate even during power loss or when the main power source is disconnected. It communicates with the host microcontroller via a serial interface, typically I2C or SPI, providing easy integration into existing systems.

Application Scenario:

In a simple project, M41ST85WMX6TR can be utilized to add timekeeping functionality to a digital clock. Here's how to incorporate it into your project:

1. Connection:

Connect M41ST85WMX6TR to the host microcontroller, such as an Arduino, using the I2C or SPI interface. Ensure proper wiring and configure the microcontroller's communication protocol accordingly.

2. Initialization:

Write initialization code in the microcontroller firmware to set up the M41ST85WMX6TR chip. This includes configuring the clock and calendar settings, such as time, date, and alarm functions.

3. Clock Display:

Implement code to read the current time from M41ST85WMX6TR and display it on a digital screen, such as an LCD or LED display. Update the display periodically to reflect the accurate time.

4. Alarm Function:

Utilize the alarm feature of M41ST85WMX6TR to trigger specific actions at predefined times. For example, you can program the microcontroller to sound a buzzer or turn on an indicator LED when the alarm time is reached.

5. Power Management:

Ensure proper power supply to M41ST85WMX6TR and the microcontroller. If using a battery backup, ensure the battery is connected and charged to maintain timekeeping functionality during power loss.

Considerations:

When working with M41ST85WMX6TR, consider the following:

- Backup Battery: Ensure the backup battery is replaced periodically to prevent data loss and maintain accurate timekeeping.

- Communication Protocol: Choose the appropriate communication protocol (I2C or SPI) based on your project requirements and the compatibility of your microcontroller.

- Error Handling: Implement error handling routines in the firmware to handle communication errors or clock initialization failures gracefully.

- Calibration: Periodically calibrate the RTC chip to compensate for any drift in timekeeping accuracy over long periods.

- Integration Testing: Test the complete system thoroughly to ensure proper integration between M41ST85WMX6TR and the microcontroller, as well as the reliability of timekeeping functionality.

M41ST85WMX6TR information

M41ST85WMX6TR Specifications

Package/Case:
28-SOIC (0.295, 7.50mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Active
Type:
Clock/Calendar
Features:
Alarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer
MemorySize:
44B
TimeFormat:
HH:MM:SS:hh (24 hr)
DateFormat:
YY-MM-DD-dd
Interface:
I²C, 2-Wire Serial
Voltage-Supply:
2.7V ~ 3.6V
Voltage-SupplyBattery:
2.5V ~ 3.5V
Current-Timekeeping(Max):
0.5mA @ 2.7V ~ 3.6V
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

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3. Are the M41ST85WMX6TR price and inventory displayed accurate?

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6. What is the process for return or replacement of M41ST85WMX6TR?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the M41ST85WMX6TR we delivered, we will accept the replacement or return of the M41ST85WMX6TR only when all of the below conditions are fulfilled:

(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 M41ST85WMX6TR.

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

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations