BQ4850YMA-85N

Product Overview

Category

BQ4850YMA-85N belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in electronic devices for timekeeping and real-time clock (RTC) applications.

Characteristics

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

Package

BQ4850YMA-85N is available in a compact surface-mount package, allowing for easy integration into various electronic systems.

Essence

The essence of BQ4850YMA-85N lies in its ability to accurately keep track of time and provide real-time clock functionality in electronic devices.

Packaging/Quantity

This IC is typically packaged in reels or tubes, with each reel/tube containing a specific quantity of BQ4850YMA-85N units. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Timekeeping Accuracy: ±1 minute per month
• Clock Frequency: 32.768 kHz
• Battery Backup Voltage: 1.8V to 5.5V
• Interface: I2C

Detailed Pin Configuration

The BQ4850YMA-85N IC has the following pin configuration:

1. VCC: Power supply voltage input
2. GND: Ground reference
3. SDA: Serial data line for I2C communication
4. SCL: Serial clock line for I2C communication
5. SQW/INT: Square wave output or interrupt output
6. X1: Crystal oscillator input
7. X2: Crystal oscillator output
8. VBAT: Battery backup voltage input

Functional Features

• Real-time clock functionality
• Battery backup support for timekeeping during power loss
• Alarm and interrupt capabilities
• Square wave output for timing applications
• I2C interface for easy integration with microcontrollers

Advantages and Disadvantages

Advantages

• High accuracy timekeeping
• Low power consumption
• Compact form factor
• Wide operating temperature range

Disadvantages

• Limited memory capacity for additional data storage
• Dependency on an external crystal oscillator for clock accuracy

Working Principles

BQ4850YMA-85N utilizes a combination of an internal oscillator and an external crystal oscillator to maintain accurate timekeeping. The IC operates in conjunction with a backup battery to ensure uninterrupted timekeeping even during power loss.

Detailed Application Field Plans

BQ4850YMA-85N finds applications in various electronic devices that require precise timekeeping, such as:

1. Smartwatches
2. Medical equipment
3. Industrial automation systems
4. Automotive electronics
5. Consumer electronics

Detailed and Complete Alternative Models

1. DS3231 - Real-Time Clock (RTC) IC with integrated temperature compensation
2. PCF8563 - Low-power RTC IC with alarm and timer functions
3. MCP7940N - I2C RTC IC with battery backup and SRAM

These alternative models offer similar functionalities to BQ4850YMA-85N and can be considered as alternatives based on specific application requirements.

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