DS1747P-70+ - English Editing Encyclopedia Entry

Product Overview

Category

The DS1747P-70+ belongs to the category of non-volatile static RAM (NVSRAM).

Use

This product is commonly used for applications that require both non-volatility and high-speed read/write operations.

Characteristics

• Non-volatile: The DS1747P-70+ retains data even when power is removed.
• High-speed operation: It offers fast access times, making it suitable for time-critical applications.
• Low power consumption: The device operates at low power levels, ensuring energy efficiency.

Package

The DS1747P-70+ is available in a standard 24-pin DIP (Dual Inline Package) format.

Essence

The essence of the DS1747P-70+ lies in its ability to combine the benefits of non-volatility with high-speed operation, making it an ideal choice for various applications.

Packaging/Quantity

The DS1747P-70+ is typically packaged in reels or tubes, with a quantity of 100 units per package.

Specifications

• Supply voltage: 4.5V to 5.5V
• Operating temperature range: -40°C to +85°C
• Memory size: 32 kilobits (4 kilobytes)
• Access time: 70 nanoseconds
• Data retention: Over 10 years

Detailed Pin Configuration

The DS1747P-70+ has a total of 24 pins, each serving a specific purpose. The pin configuration is as follows:

1. VCC - Power supply
2. GND - Ground
3. CE - Chip enable
4. OE - Output enable
5. WE - Write enable
6. A0-A14 - Address inputs
7. DQ0-DQ7 - Data inputs/outputs
8. SQW - Square wave output
9. RST - Reset input
10. VBAT - Battery backup input

Functional Features

• Non-volatile storage: The DS1747P-70+ retains data even during power loss or system shutdown.
• High-speed operation: It offers fast read and write access times, ensuring efficient data handling.
• Battery backup support: The device includes a battery backup input (VBAT) for uninterrupted operation during power outages.
• Automatic store on power loss: The DS1747P-70+ automatically saves data to non-volatile memory when power is lost.

Advantages and Disadvantages

Advantages

• Non-volatility ensures data integrity during power interruptions.
• High-speed operation allows for quick data access and manipulation.
• Low power consumption results in energy-efficient performance.
• Battery backup support provides continuous operation during power failures.

Disadvantages

• Limited memory size compared to other storage devices.
• Relatively higher cost compared to standard RAM modules.
• Requires additional circuitry for battery backup functionality.

Working Principles

The DS1747P-70+ combines the features of static RAM (SRAM) and non-volatile memory. It utilizes a combination of volatile and non-volatile elements to achieve its functionality. When power is applied, the device operates as a standard SRAM, allowing fast read and write operations. However, when power is removed, an internal battery backup system ensures that the data is retained in non-volatile memory.

Detailed Application Field Plans

The DS1747P-70+ finds applications in various fields, including:

1. Industrial automation: Used for storing critical data in control systems, ensuring data integrity during power fluctuations.
2. Automotive electronics: Employed in automotive control units to retain important information such as mileage, settings, and error codes.
3. Medical devices: Utilized in medical equipment to store patient data, ensuring continuity of information during power disruptions.
4. Communication systems: Integrated into networking devices for storing configuration settings and maintaining network stability during power outages.

Detailed and Complete Alternative Models

1. DS1235P-70+: Similar to the DS1747P-70+, but with a smaller memory size (16 kilobits).
2. DS12887A+: Combines real-time clock functionality with non-volatile RAM, suitable for time-critical applications.
3. M48Z02-150PC1: Offers a larger memory size (256 kilobits) and operates at a slower access time (150 nanoseconds).

In conclusion, the DS1747P-70+ is a non-volatile static RAM that combines the benefits of non-volatility and high-speed operation. With its unique features and applications in various fields, it provides a reliable solution for data storage and retention in critical systems.