BQ2201SN - English Editing Encyclopedia Entry

Product Overview

Category

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

Use

The BQ2201SN is primarily used as a real-time clock (RTC) for various electronic devices.

Characteristics

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

Package

The BQ2201SN is available in a compact surface-mount package, allowing for easy integration into electronic devices.

Essence

The essence of the BQ2201SN lies in its ability to provide accurate timekeeping functionality with minimal power consumption.

Packaging/Quantity

The BQ2201SN is typically packaged in reels or tubes and is available in various quantities to meet different production needs.

Specifications

• Supply Voltage: 2.7V to 5.5V
• Timekeeping Accuracy: ±2 minutes per month at 25°C
• Operating Temperature Range: -40°C to +85°C
• Clock Output Frequency: 32.768 kHz

Detailed Pin Configuration

The BQ2201SN 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
• Battery backup support for timekeeping during power loss
• Programmable alarm and interrupt functions
• I2C interface for easy communication with microcontrollers

Advantages and Disadvantages

Advantages

• Low power consumption extends battery life
• High accuracy ensures precise timekeeping
• Wide operating voltage range allows for versatile applications
• Compact form factor enables integration into small devices

Disadvantages

• Limited memory capacity for additional data storage
• Lack of built-in temperature compensation for enhanced accuracy

Working Principles

The BQ2201SN utilizes a crystal oscillator to generate a stable clock signal. It incorporates an internal counter that keeps track of time, date, and leap years. The device can be powered by a battery backup during power loss situations, ensuring uninterrupted timekeeping.

Detailed Application Field Plans

The BQ2201SN finds application in various electronic devices, including but not limited to: - Smartwatches - Medical equipment - Automotive systems - Industrial automation - Consumer electronics

Detailed and Complete Alternative Models

1. DS1307 - Real-Time Clock IC with I2C interface
2. PCF8563 - Low-power Real-Time Clock IC with I2C-bus interface
3. MCP7940N - I2C Real-Time Clock/Calendar with SRAM

These alternative models offer similar functionality to the BQ2201SN and can be considered as alternatives based on specific requirements.

In conclusion, the BQ2201SN is a highly reliable real-time clock integrated circuit offering accurate timekeeping, low power consumption, and a compact form factor. Its versatility makes it suitable for a wide range of applications in various industries.

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