MCP79411T-I/MNY

Product Overview

Category

The MCP79411T-I/MNY belongs to the category of Real-Time Clocks (RTCs).

Use

This product is primarily used for timekeeping and calendar functions in various electronic devices.

Characteristics

• Low power consumption
• High accuracy
• Integrated battery backup
• I2C interface for easy communication
• Alarm and timer functionality

Package

The MCP79411T-I/MNY comes in a small surface-mount package, making it suitable for compact designs.

Essence

The essence of this product lies in its ability to accurately keep track of time and date, even during power outages or system shutdowns.

Packaging/Quantity

The MCP79411T-I/MNY is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

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
• Battery Backup Voltage: 1.3V to 5.5V
• I2C Bus Frequency: Up to 400 kHz
• Memory: 64 bytes of SRAM

Detailed Pin Configuration

The MCP79411T-I/MNY has a total of 8 pins:

1. VCC - Power supply input
2. GND - Ground connection
3. SDA - I2C data line
4. SCL - I2C clock line
5. SQW/OUT - Square wave output or interrupt pin
6. VBAT - Battery backup input
7. X1 - Crystal oscillator input
8. X2 - Crystal oscillator output

Functional Features

• Time and date keeping with alarm and timer functions
• Battery backup for uninterrupted operation
• Square wave output for system synchronization
• I2C interface for easy integration with microcontrollers

Advantages and Disadvantages

Advantages

• High accuracy timekeeping
• Low power consumption
• Integrated battery backup ensures data integrity
• Compact package suitable for space-constrained designs

Disadvantages

• Limited memory capacity (64 bytes)
• Requires an external crystal oscillator for clock accuracy

Working Principles

The MCP79411T-I/MNY utilizes a combination of an internal oscillator and an external crystal oscillator to accurately keep track of time. It uses the I2C interface to communicate with the host microcontroller, allowing for easy configuration and retrieval of time and date information.

During normal operation, the device is powered by the main supply voltage. In the event of a power failure, the integrated battery backup takes over, ensuring uninterrupted timekeeping. The square wave output can be used to synchronize other devices in the system.

Detailed Application Field Plans

The MCP79411T-I/MNY finds applications in various electronic devices that require accurate timekeeping and calendar functions. Some potential application fields include:

1. Consumer Electronics: Smartphones, tablets, digital cameras
2. Industrial Automation: Programmable logic controllers (PLCs), industrial timers
3. Automotive: Dashboard clocks, car audio systems
4. Medical Devices: Patient monitoring systems, medical equipment with time-sensitive operations
5. Home Automation: Smart thermostats, security systems

Detailed and Complete Alternative Models

1. DS1307 - Real-Time Clock IC from Maxim Integrated
2. PCF8563 - Real-Time Clock IC from NXP Semiconductors
3. DS3231 - Extremely Accurate I2C RTC from Maxim Integrated

These alternative models offer similar functionality and can be considered as alternatives to the MCP79411T-I/MNY.

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