DS1743P-100

Overview

Category: Integrated Circuit (IC)

Use: Real-Time Clock (RTC) with Non-Volatile RAM (NVRAM)

Characteristics: - Combines a real-time clock and non-volatile RAM in a single package - Provides accurate timekeeping and data storage capabilities - Can operate in a wide temperature range - Low power consumption - Reliable performance

Packaging: DIP (Dual In-line Package)

Essence: The DS1743P-100 is an integrated circuit that combines the functionality of a real-time clock and non-volatile RAM. It is designed to provide accurate timekeeping and data storage capabilities in various applications.

Packaging/Quantity: The DS1743P-100 is available in a DIP package, which contains a single unit of the IC.

Specification Parameters

The DS1743P-100 has the following specification parameters:

1. Timekeeping:

   • Hours, minutes, and seconds
   • Day, month, and year
   • Leap year compensation
   • 12 or 24-hour format

2. Non-Volatile RAM:

   • 32KB of non-volatile RAM
   • Data retention for over 10 years
   • Unlimited write cycles

3. Power Supply:

   • Operating voltage: 2.7V to 5.5V
   • Battery backup voltage: 2.0V to 5.5V

4. Temperature Range:

   • Industrial temperature range: -40°C to +85°C

5. Interface:

   • SPI (Serial Peripheral Interface)

Pin Configuration

The DS1743P-100 has the following pin configuration:

1. VCC: Power supply voltage
2. GND: Ground
3. CLK: Clock input/output
4. RST: Reset input
5. CE: Chip enable input
6. IO0-IO7: Data input/output

Functional Characteristics

The DS1743P-100 offers the following functional characteristics:

1. Real-Time Clock:

   • Accurate timekeeping with seconds, minutes, hours, day, month, year, and leap year compensation.
   • Supports both 12-hour and 24-hour time formats.

2. Non-Volatile RAM:

   • Provides 32KB of non-volatile RAM for data storage.
   • Retains data for over 10 years without power.
   • Allows unlimited write cycles.

3. Battery Backup:

   • Can operate using a backup battery when the main power supply is disconnected.
   • Ensures continuous timekeeping and data retention during power outages.

4. Serial Peripheral Interface (SPI):

   • Uses SPI for communication with other devices.
   • Enables easy integration into various systems.

Advantages and Disadvantages

Advantages: - Integration of real-time clock and non-volatile RAM in a single package saves board space. - Accurate timekeeping and reliable data storage capabilities. - Wide temperature range operation suitable for industrial applications. - Low power consumption for energy-efficient designs.

Disadvantages: - Limited non-volatile RAM capacity (32KB). - Requires an external backup battery for uninterrupted operation during power outages.

Working Principle

The DS1743P-100 combines a real-time clock and non-volatile RAM by integrating the necessary circuitry within a single IC. The real-time clock component uses an internal oscillator to keep track of time accurately. It also compensates for leap years and supports different time formats.

The non-volatile RAM component provides data storage capabilities. It allows users to store and retrieve data even when the main power supply is disconnected. The non-volatile RAM retains data for an extended period without requiring power.

The IC operates using a power supply voltage within the specified range. It can also utilize a backup battery to ensure continuous timekeeping and data retention during power outages.

Detailed Application Field Plans

The DS1743P-100 finds applications in various fields, including:

1. Embedded Systems:

   • Used in embedded systems that require accurate timekeeping and data storage capabilities.
   • Suitable for applications such as industrial automation, smart meters, and data loggers.

2. Consumer Electronics:

   • Integrated into consumer electronic devices that need real-time clock functionality and non-volatile data storage.
   • Examples include digital cameras, set-top boxes, and home appliances.

3. Automotive:

   • Utilized in automotive systems that require reliable timekeeping and data storage.
   • Applications include vehicle tracking systems, event data recorders, and dashboard displays.

4. Medical Devices:

   • Incorporated into medical devices that rely on accurate timekeeping and data storage.
   • Used in equipment like patient monitors, infusion pumps, and diagnostic instruments.

Detailed Alternative Models

Some alternative models to the DS1743P-100 are:

1. DS3231: