M41T81SM6E - English Editing Encyclopedia Entry

Product Overview

• Category: Integrated Circuit (IC)
• Use: Real-Time Clock (RTC) with Serial Interface
• Characteristics: Low power consumption, high accuracy, small package size
• Package: Surface Mount Package (SMP), 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Provides accurate timekeeping functionality for various electronic devices
• Packaging/Quantity: Available in tape and reel packaging, with a quantity of 2500 units per reel

Specifications

• Supply Voltage: 1.8V to 5.5V
• Timekeeping Accuracy: ±2 minutes per month at 25°C
• Operating Temperature Range: -40°C to +85°C
• Serial Interface: I2C (Inter-Integrated Circuit) compatible, supports clock/calendar functions

Detailed Pin Configuration

The M41T81SM6E has the following pin configuration:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | VBAT | Backup Power Input | | 2 | GND | Ground | | 3 | SDA | Serial Data Line | | 4 | SCL | Serial Clock Line | | 5 | SQW/INT | Square Wave Output / Interrupt Output | | 6 | VCC | Power Supply Input | | 7 | NC | No Connection | | 8 | NC | No Connection |

Functional Features

• Accurate timekeeping with built-in oscillator and counter circuitry
• Battery backup support for uninterrupted operation during power loss
• Programmable alarm and interrupt functions
• Automatic leap year compensation
• Power-saving mode to minimize power consumption
• User-friendly serial interface for easy integration with microcontrollers

Advantages and Disadvantages

Advantages: - High accuracy timekeeping - Low power consumption - Small package size for space-constrained applications - Versatile functionality with programmable features

Disadvantages: - Limited storage capacity for additional data - Requires an external backup power source for uninterrupted operation

Working Principles

The M41T81SM6E utilizes an internal oscillator and counter circuitry to accurately keep track of time. It operates on a supply voltage ranging from 1.8V to 5.5V. The device can be powered by the main power supply or an external backup battery connected to the VBAT pin. During normal operation, it keeps track of time and provides clock/calendar functions through the serial interface. In case of a power loss, the backup battery ensures uninterrupted timekeeping.

Detailed Application Field Plans

The M41T81SM6E is widely used in various electronic devices that require accurate timekeeping. Some of its application fields include: - Consumer electronics (e.g., digital watches, clocks, timers) - Industrial automation systems (e.g., programmable logic controllers, data loggers) - Automotive electronics (e.g., dashboard displays, infotainment systems) - Medical equipment (e.g., patient monitoring devices, infusion pumps) - Communication devices (e.g., routers, switches)

Detailed and Complete Alternative Models

• DS1307 - Real-Time Clock IC with I2C Interface
• PCF8563 - Real-Time Clock and Calendar IC with I2C-Bus Interface
• DS3231 - Extremely Accurate I2C-Integrated RTC/TCXO/Crystal

Note: This list is not exhaustive and there are several other alternative models available in the market.

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