BQ3287EAMT

Product Overview

Category

BQ3287EAMT belongs to the category of Real-Time Clocks (RTCs).

Use

The BQ3287EAMT is primarily used for timekeeping and calendar functions in electronic devices.

Characteristics

• Accurate timekeeping with low power consumption
• Integrated oscillator circuitry
• Non-volatile memory for data storage
• I2C interface for communication
• Wide operating voltage range

Package

The BQ3287EAMT comes in a small surface-mount package, making it suitable for compact electronic devices.

Essence

The essence of the BQ3287EAMT lies in its ability to provide accurate timekeeping and calendar functionality while consuming minimal power.

Packaging/Quantity

The BQ3287EAMT is typically packaged in reels or tubes, with a quantity of 250 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
• Data Retention: Over 10 years
• I2C Bus Frequency: Up to 400kHz

Detailed Pin Configuration

The BQ3287EAMT has the following pin configuration:

1. VCC - Power supply input
2. GND - Ground
3. SDA - Serial Data Line for I2C communication
4. SCL - Serial Clock Line for I2C communication
5. X1 - Crystal oscillator input
6. X2 - Crystal oscillator output
7. VBAT - Backup battery input
8. RST - Reset pin

Functional Features

• Real-time clock with calendar functions
• Alarm and timer capabilities
• Automatic leap year compensation
• Power-fail detection and switch circuitry
• Battery backup for timekeeping during power loss

Advantages and Disadvantages

Advantages

• Accurate timekeeping with low power consumption
• Integrated oscillator circuitry simplifies design
• Non-volatile memory ensures data retention
• Wide operating voltage range allows for versatile applications

Disadvantages

• Relatively limited timekeeping accuracy compared to more advanced RTCs
• Lack of additional features found in higher-end models

Working Principles

The BQ3287EAMT utilizes an integrated oscillator circuit to generate clock signals. It communicates with the host device through the I2C interface, allowing for easy integration into various systems. The non-volatile memory ensures that time and calendar data are retained even during power loss.

Detailed Application Field Plans

The BQ3287EAMT finds application in a wide range of electronic devices requiring accurate timekeeping and calendar functionality. Some potential application fields include:

1. Consumer Electronics: Smartphones, tablets, digital cameras
2. Automotive: Car infotainment systems, dashboard displays
3. Industrial Control Systems: Programmable logic controllers (PLCs), automation equipment
4. Medical Devices: Patient monitoring systems, medical equipment
5. Internet of Things (IoT): Smart home devices, wearable technology

Detailed and Complete Alternative Models

1. DS3231 - Real-Time Clock Module with higher timekeeping accuracy
2. PCF8563 - Low-power Real-Time Clock with alarm functions
3. MCP7940N - Real-Time Clock with battery switchover capability

These alternative models offer similar functionalities to the BQ3287EAMT but may have different specifications and package options.

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