STMicroelectronics
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M41ST87WMX6TR
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M41ST87WMX6TR

Introduction

The M41ST87WMX6TR is a part of the STMicroelectronics family of real-time clock (RTC) ICs. This device offers accurate timekeeping and a range of features suitable for various applications.

Basic Information Overview

  • Category: Real-Time Clock IC
  • Use: Timekeeping and timestamping in electronic devices
  • Characteristics: Low power consumption, high accuracy, integrated crystal, I2C interface
  • Package: SOIC-8
  • Essence: Accurate timekeeping and timestamping
  • Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

  • Operating Voltage: 1.8V to 5.5V
  • Timekeeping Current: 400nA at VDD = 3.0V, +25°C
  • Integrated Crystal Frequency: 32.768 kHz
  • Interface: I2C
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The M41ST87WMX6TR features a standard SOIC-8 pin configuration with pins designated for power supply, ground, I2C communication, and other essential connections.

Functional Features

  • Accurate timekeeping with automatic leap year compensation
  • Battery backup for continuous operation
  • Alarm and timer functions
  • Programmable square wave output
  • Power-on reset and watchdog functions

Advantages and Disadvantages

Advantages

  • Low power consumption
  • Integrated crystal for simplified design
  • Wide operating voltage range
  • I2C interface for easy integration

Disadvantages

  • Limited temperature range compared to some alternatives
  • Small package size may be challenging for hand soldering

Working Principles

The M41ST87WMX6TR utilizes an integrated crystal oscillator to maintain accurate timekeeping. It operates in conjunction with a backup battery to ensure continuous operation even during power loss.

Detailed Application Field Plans

This RTC IC is suitable for a wide range of applications including: - Consumer electronics - Industrial automation - Automotive systems - Medical devices - Smart meters

Detailed and Complete Alternative Models

  • DS3231: Offers higher temperature range and temperature-compensated crystal oscillator
  • MCP7940N: Provides battery switchover and trickle charge capability
  • RV-1805-C3: Ultra-low power consumption and extended temperature range

In conclusion, the M41ST87WMX6TR from STMicroelectronics is a reliable real-time clock IC offering accurate timekeeping and a range of features suitable for diverse electronic applications.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací M41ST87WMX6TR v technických řešeních

  1. What is the M41ST87WMX6TR?

    • The M41ST87WMX6TR is a low-power serial real-time clock (RTC) with a built-in 128-byte battery-backed non-volatile RAM and a digital temperature sensor.

  2. How does the M41ST87WMX6TR interface with microcontrollers?

    • The M41ST87WMX6TR interfaces with microcontrollers using an I2C serial interface, making it easy to integrate into various technical solutions.

  3. What are the key features of the M41ST87WMX6TR?

    • The key features include a wide operating voltage range, low power consumption, automatic power-fail detection and switch circuitry, and a programmable square wave output signal.

  4. How can the M41ST87WMX6TR be used in battery-powered devices?

    • The M41ST87WMX6TR's low power consumption and battery-backed non-volatile RAM make it suitable for use in battery-powered devices, ensuring accurate timekeeping even when the main power source is unavailable.

  5. Can the M41ST87WMX6TR be used in automotive applications?

    • Yes, the M41ST87WMX6TR is suitable for automotive applications due to its wide operating temperature range and robust design.

  6. What is the digital temperature sensor used for in the M41ST87WMX6TR?

    • The digital temperature sensor provides accurate temperature readings, which can be useful in applications where temperature monitoring is important.

  7. Is the M41ST87WMX6TR compatible with different microcontroller platforms?

    • Yes, the M41ST87WMX6TR is designed to be compatible with various microcontroller platforms that support the I2C interface.

  8. Can the M41ST87WMX6TR be used in industrial automation systems?

    • Yes, the M41ST87WMX6TR's reliability, accuracy, and wide operating voltage range make it suitable for use in industrial automation systems.

  9. What are the typical applications of the M41ST87WMX6TR?

    • Typical applications include smart meters, industrial controllers, medical instruments, and any system requiring an accurate real-time clock and non-volatile memory.

  10. How does the M41ST87WMX6TR handle power failures?

    • The M41ST87WMX6TR includes automatic power-fail detection and switch circuitry to ensure a seamless transition to backup power and maintain accurate timekeeping during power interruptions.