DS14285SN/T&R

Product Overview

• Category: Integrated Circuit
• Use: Real-Time Clock (RTC)
• Characteristics: Low power consumption, high accuracy, small package size
• Package: Surface Mount Technology (SMT) Tape and Reel
• Essence: Provides accurate timekeeping functionality for various electronic devices
• Packaging/Quantity: 3000 units per reel

Specifications

• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Timekeeping Accuracy: ±2 minutes per month at 25°C
• Battery Backup Voltage: 1.8V to 5.5V
• I2C Bus Interface: Supports standard and fast mode (100kHz and 400kHz)

Detailed Pin Configuration

The DS14285SN/T&R has a total of 16 pins arranged as follows:

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
9. NC - No connection
10. NC - No connection
11. NC - No connection
12. NC - No connection
13. NC - No connection
14. NC - No connection
15. NC - No connection
16. NC - No connection

Functional Features

• Real-time clock with calendar functionality
• Automatic leap year compensation
• Alarm and timer functions
• Battery backup support for uninterrupted timekeeping
• Programmable square wave output
• I2C interface for easy integration with microcontrollers

Advantages and Disadvantages

Advantages: - Low power consumption extends battery life - High accuracy ensures precise timekeeping - Small package size allows for space-constrained designs - Easy integration with microcontrollers through I2C interface

Disadvantages: - Limited temperature range for operation (-40°C to +85°C) - Reliance on an external crystal oscillator for accurate timekeeping

Working Principles

The DS14285SN/T&R is based on a real-time clock (RTC) integrated circuit. It utilizes an external crystal oscillator to generate accurate timekeeping signals. The device communicates with a microcontroller or other devices through the I2C bus interface, allowing for easy configuration and data exchange. The DS14285SN/T&R can operate from a power supply voltage of 2.7V to 5.5V and also supports battery backup to ensure uninterrupted timekeeping.

Detailed Application Field Plans

The DS14285SN/T&R is widely used in various electronic devices that require accurate timekeeping functionality. Some common application fields include:

1. Consumer Electronics: Clocks, watches, digital cameras, and portable media players.
2. Automotive: Car audio systems, dashboard clocks, and GPS navigation devices.
3. Industrial Automation: Programmable logic controllers (PLCs), data loggers, and industrial timers.
4. Medical Devices: Patient monitoring systems, infusion pumps, and medical equipment with time-sensitive operations.
5. Communication Systems: Network switches, routers, and telecommunication equipment requiring precise timing synchronization.

Detailed and Complete Alternative Models

1. DS3231 - Real-Time Clock Module with I2C Interface
2. PCF8563 - CMOS Real-Time Clock/Calendar with I2C Bus Interface
3. MCP7940N - I2C Real-Time Clock/Calendar with SRAM and EEPROM

These alternative models offer similar functionality and can be considered as alternatives to the DS14285SN/T&R based on specific project requirements.

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