BQ4845YS-A4N

Product Overview

Category

BQ4845YS-A4N belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for real-time clock (RTC) applications.

Characteristics

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

Package

BQ4845YS-A4N is available in a compact surface mount package.

Essence

The essence of this product lies in its ability to accurately keep track of time and date, making it suitable for various time-sensitive applications.

Packaging/Quantity

BQ4845YS-A4N is typically packaged in reels or tubes, with a quantity of 1000 units per reel/tube.

Specifications

• Supply voltage: 2.7V to 5.5V
• Timekeeping accuracy: ±2 minutes per month
• Operating temperature range: -40°C to +85°C
• Clock/calendar with leap year compensation
• Battery backup for continuous operation during power loss

Detailed Pin Configuration

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

Functional Features

• Real-time clock with calendar functionality
• Automatic leap year compensation
• Programmable alarm and interrupt functions
• Battery backup for uninterrupted timekeeping
• Square wave output for system synchronization

Advantages and Disadvantages

Advantages

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

Disadvantages

• Limited memory for additional data storage
• Requires an external crystal oscillator

Working Principles

BQ4845YS-A4N utilizes a combination of an internal clock, calendar registers, and battery backup to accurately keep track of time and date. The crystal oscillator provides the necessary timing reference for precise timekeeping.

Detailed Application Field Plans

BQ4845YS-A4N finds applications in various fields, including: 1. Consumer electronics - digital watches, clocks, and timers 2. Industrial automation - programmable logic controllers (PLCs) 3. Automotive - dashboard clocks and event logging systems 4. Medical devices - patient monitoring systems 5. Communication equipment - network synchronization

Detailed and Complete Alternative Models

1. BQ4845YS-A4M
2. DS3231
3. PCF8563
4. MCP7940N
5. RV-8803-C7

These alternative models offer similar functionality and can be considered as alternatives to BQ4845YS-A4N.

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