DS1742W-150+ - English Editing Encyclopedia Entry

Product Overview

Category

The DS1742W-150+ belongs to the category of electronic components.

Use

It is primarily used for timekeeping and data storage purposes in various electronic devices.

Characteristics

• Low power consumption
• Non-volatile memory
• Real-time clock functionality
• High accuracy timekeeping
• Wide operating temperature range

Package

The DS1742W-150+ is available in a compact package, suitable for surface mount applications.

Essence

This product combines the functionalities of a real-time clock and non-volatile memory, making it an essential component for devices requiring accurate timekeeping and data storage capabilities.

Packaging/Quantity

The DS1742W-150+ 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 at 25°C
• Memory Size: 4KB
• Operating Temperature Range: -40°C to +85°C
• Data Retention: Over 10 years

Detailed Pin Configuration

The DS1742W-150+ has the following pin configuration:

1. VCC - Power supply input
2. GND - Ground connection
3. SDA - Serial data input/output
4. SCL - Serial clock input
5. RST - Reset input
6. X1 - Crystal oscillator input
7. X2 - Crystal oscillator output
8. NC - No connection

Functional Features

• Real-time clock functionality with programmable alarms
• Battery backup for continuous timekeeping during power loss
• Non-volatile memory for data storage
• I2C interface for easy integration with microcontrollers

Advantages and Disadvantages

Advantages

• Low power consumption extends battery life
• Accurate timekeeping ensures precise scheduling and event tracking
• Non-volatile memory retains data even during power interruptions
• Compact package allows for space-efficient designs

Disadvantages

• Limited memory size may not be sufficient for certain applications requiring extensive data storage
• Reliance on an external crystal oscillator for clock accuracy

Working Principles

The DS1742W-150+ utilizes a combination of a real-time clock circuit and non-volatile memory. The clock circuit is powered by a backup battery, ensuring continuous timekeeping even in the absence of main power. The non-volatile memory stores data that can be accessed and updated as required.

Detailed Application Field Plans

The DS1742W-150+ finds applications in various fields, including but not limited to:

1. Embedded systems
2. Industrial automation
3. Medical devices
4. Automotive electronics
5. Consumer electronics

Detailed and Complete Alternative Models

1. DS3231 - Real-time clock module with higher timekeeping accuracy and additional features.
2. MCP7940N - Real-time clock/calendar with integrated SRAM and EEPROM.
3. PCF8563 - Low-power real-time clock/calendar with I2C interface.

These alternative models offer similar functionalities to the DS1742W-150+, providing options based on specific requirements and preferences.

In conclusion, the DS1742W-150+ is a versatile electronic component that combines real-time clock functionality with non-volatile memory. Its low power consumption, compact package, and wide operating temperature range make it suitable for various applications. However, its limited memory size and reliance on an external crystal oscillator are notable considerations. Alternative models such as DS3231, MCP7940N, and PCF8563 provide additional choices for users seeking similar functionalities.