DS14285S/T&R

Product Overview

• Category: Integrated Circuit
• Use: Real-time Clock (RTC) with Battery Backup
• Characteristics: Low power consumption, high accuracy, compact design
• Package: Surface Mount, Tape & Reel
• Essence: Reliable timekeeping solution for electronic devices
• Packaging/Quantity: 2500 units per reel

Specifications

• Operating Voltage: 2.97V to 5.5V
• Timekeeping Current: 400nA at 3.3V
• Temperature Range: -40°C to +85°C
• I2C Interface: Up to 400kHz
• Battery Backup: 1.3V to 5.5V

Detailed Pin Configuration

The DS14285S/T&R features a 16-pin SOIC package with the following pin configuration: 1. VCC 2. GND 3. SDA 4. SCL 5. NC 6. RST 7. X1 8. X2 9. VBAT 10. GND 11. NC 12. NC 13. NC 14. NC 15. NC 16. NC

Functional Features

• Integrated Crystal: Eliminates the need for an external crystal oscillator
• Battery Switchover Circuit: Ensures continuous timekeeping during main power loss
• Alarm and Timer Functions: Versatile timing capabilities for various applications
• Automatic Leap Year Compensation: Accurate date tracking over long periods

Advantages and Disadvantages

Advantages

• Low power consumption extends battery life
• Integrated crystal simplifies design and reduces component count
• Wide operating voltage range enhances compatibility with different systems

Disadvantages

• Limited temperature range compared to some industrial-grade RTCs
• Slightly higher cost compared to basic RTC modules

Working Principles

The DS14285S/T&R utilizes a combination of internal registers, a real-time clock counter, and a low-power oscillator to accurately track time and date. When powered by the main supply, the device charges the backup battery and maintains timekeeping. In the event of a power failure, the battery switchover circuit seamlessly takes over to ensure uninterrupted operation.

Detailed Application Field Plans

The DS14285S/T&R is well-suited for a wide range of applications, including: - Embedded systems - Consumer electronics - Industrial automation - Medical devices - Automotive systems

Detailed and Complete Alternative Models

For users seeking alternative RTC solutions, the following models offer similar functionality: - DS3231: Highly accurate RTC with integrated temperature-compensated crystal oscillator - MCP7940N: Low-power RTC with battery switchover and SRAM

In conclusion, the DS14285S/T&R offers a reliable and efficient real-time clock solution for diverse electronic applications, combining high accuracy with low power consumption to meet the demands of modern embedded systems.

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