BQ2201SN-N

Product Overview

Category

BQ2201SN-N belongs to the category of integrated circuits (ICs).

Use

This product is commonly used as a real-time clock (RTC) in various electronic devices.

Characteristics

• Low power consumption
• High accuracy timekeeping
• Small form factor
• Wide operating voltage range

Package

BQ2201SN-N is available in a small outline package (SOP) with a specified pin configuration.

Essence

The essence of BQ2201SN-N lies in its ability to accurately keep track of time and provide reliable timekeeping functionality.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Timekeeping Accuracy: ±2 minutes per month
• Clock Frequency: 32.768 kHz
• Battery Backup Voltage: 1.8V to 5.5V

Detailed Pin Configuration

BQ2201SN-N features the following pin configuration:

1. VCC: Power supply input
2. GND: Ground connection
3. X1: Crystal oscillator input
4. X2: Crystal oscillator output
5. SQW/OUT: Square wave output
6. SDA: Serial data input/output
7. SCL: Serial clock input

Functional Features

• Real-time clock with calendar functionality
• Automatic leap year compensation
• Alarm and timer functions
• Battery backup for timekeeping during power loss
• Programmable square wave output frequency

Advantages and Disadvantages

Advantages

• High accuracy timekeeping
• Low power consumption
• Compact size
• Versatile functionality

Disadvantages

• Limited timekeeping accuracy compared to more advanced RTCs
• Lack of additional advanced features

Working Principles

BQ2201SN-N utilizes a crystal oscillator to generate a precise clock frequency. It incorporates an internal counter to keep track of time and date, which can be accessed and programmed through the serial interface. The battery backup ensures uninterrupted timekeeping during power outages.

Detailed Application Field Plans

BQ2201SN-N finds applications in various electronic devices requiring accurate timekeeping, such as:

1. Wearable devices
2. Smart home automation systems
3. Industrial control systems
4. Automotive electronics
5. Medical equipment

Detailed and Complete Alternative Models

1. DS3231 - Real-Time Clock (RTC) IC with higher timekeeping accuracy and additional features.
2. PCF8563 - Low-power RTC IC with I2C interface and alarm functionality.
3. MCP7940N - Battery-backed RTC IC with I2C/SPI interface and integrated temperature sensor.

These alternative models offer different specifications and features, providing options based on specific application requirements.

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