DS17485S-3+ - Product Overview

Category

DS17485S-3+ belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in electronic devices for various applications such as data storage, communication systems, and control circuits.

Characteristics

• Integrated circuit type: DS17485S-3+
• Package type: SOT-23
• Essence: Non-volatile RAM with real-time clock/calendar
• Packaging/Quantity: Available in tape and reel packaging, with a quantity of 3000 units per reel

Specifications

The DS17485S-3+ has the following specifications: - Supply voltage range: 2.7V to 5.5V - Operating temperature range: -40°C to +85°C - Clock frequency: 32.768kHz - Memory capacity: 8 kilobits (1K x 8) - Data retention: Over 10 years - Serial interface: I2C-compatible

Detailed Pin Configuration

The DS17485S-3+ has a total of 8 pins, which are configured as follows:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | VCC | Power supply voltage input | | 2 | GND | Ground reference | | 3 | SDA | Serial data input/output | | 4 | SCL | Serial clock input | | 5 | WP | Write protect input | | 6 | NC | No connection | | 7 | NC | No connection | | 8 | VBAT | Battery backup voltage input |

Functional Features

The DS17485S-3+ offers the following functional features: - Real-time clock/calendar functionality - Non-volatile storage of time and date information - Battery backup support for uninterrupted operation - I2C-compatible serial interface for easy integration with other devices - Write protection feature to prevent accidental data modification

Advantages and Disadvantages

Advantages: - Compact SOT-23 package for space-constrained applications - Low power consumption - High data retention period - Easy integration with other devices through the I2C interface

Disadvantages: - Limited memory capacity compared to some other ICs in the same category - Requires an external battery for backup functionality

Working Principles

The DS17485S-3+ combines a non-volatile RAM (NVRAM) with a real-time clock/calendar. The NVRAM allows the storage of time and date information, which is retained even when the power supply is disconnected. The real-time clock keeps track of the current time and date, providing accurate timing information. The device operates using a low-frequency clock signal and communicates with other devices through the I2C serial interface.

Detailed Application Field Plans

The DS17485S-3+ finds applications in various fields, including: 1. Embedded systems: Used for timekeeping and data storage in microcontroller-based systems. 2. Consumer electronics: Integrated into devices such as digital cameras, set-top boxes, and home automation systems for time-sensitive operations. 3. Industrial control systems: Employed in control circuits for accurate timing and data logging purposes. 4. Communication systems: Utilized in network equipment and telecommunication devices for synchronization and time-stamping functions.

Detailed and Complete Alternative Models

Some alternative models to the DS17485S-3+ include: 1. DS3231 - Real-time clock module with higher memory capacity and additional features. 2. MCP7940N - Integrated circuit with similar functionality and I2C compatibility. 3. PCF8563 - Real-time clock/calendar IC with low power consumption and I2C interface.

In conclusion, the DS17485S-3+ is a versatile integrated circuit that combines non-volatile RAM with a real-time clock/calendar. It offers accurate timekeeping, data storage, and easy integration with other devices through the I2C interface. While it has some limitations in terms of memory capacity, it provides several advantages such as low power consumption and compact packaging. The DS17485S-3+ finds applications in various fields, including embedded systems, consumer electronics, industrial control systems, and communication systems. Alternative models like DS3231, MCP7940N, and PCF8563 offer similar functionality with varying features and specifications.