DS1743W-150+ - English Editing Encyclopedia Entry

Product Overview

Category

The DS1743W-150+ belongs to the category of non-volatile static RAM (NVSRAM).

Use

It is primarily used for storing critical data in applications where data integrity is crucial, such as in industrial control systems, medical devices, and power grid equipment.

Characteristics

• Non-volatile: The DS1743W-150+ retains data even when power is lost.
• Static RAM: It provides fast read and write access times.
• High density: The DS1743W-150+ offers a large storage capacity.
• Low power consumption: It operates at low power levels, making it suitable for battery-powered devices.

Package

The DS1743W-150+ is available in a compact 28-pin SOIC package.

Essence

The essence of the DS1743W-150+ lies in its ability to combine the benefits of non-volatile memory with the speed and reliability of static RAM.

Packaging/Quantity

The DS1743W-150+ is typically sold in reels containing 250 units per reel.

Specifications

• Supply voltage: 2.7V to 5.5V
• Operating temperature range: -40°C to +85°C
• Data retention: Up to 10 years
• Memory organization: 32K x 8 bits
• Access time: 150ns

Detailed Pin Configuration

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/INT - Square wave output/interrupt output
9. RST - Reset input
10. VBAT - Battery backup input

Functional Features

• Non-volatile data storage: The DS1743W-150+ ensures that critical data is retained even during power outages.
• Fast access times: It provides quick read and write operations, enabling efficient data handling.
• Battery backup support: The VBAT pin allows an external battery to be connected for data retention in the absence of main power.
• Square wave output: The SQW/INT pin can generate a square wave signal with programmable frequency, useful for timing applications.
• Hardware reset: The RST pin allows for a hardware-initiated system reset.

Advantages and Disadvantages

Advantages

• Data integrity: The non-volatile nature of the DS1743W-150+ ensures that critical data remains intact.
• High-speed operation: Its static RAM design enables fast access times.
• Low power consumption: The DS1743W-150+ operates at low power levels, extending battery life in portable devices.

Disadvantages

• Limited storage capacity: The DS1743W-150+ has a maximum memory organization of 32K x 8 bits, which may not be sufficient for certain applications requiring larger storage.

Working Principles

The DS1743W-150+ combines a static RAM array with a non-volatile controller. When power is applied, the device operates as a standard static RAM, allowing read and write operations. In the event of a power loss, the non-volatile controller automatically switches to a backup power source (if available) and transfers the contents of the static RAM to non-volatile memory cells. This ensures that the data is preserved even without power. Upon power restoration, the data is transferred back to the static RAM for normal operation.

Detailed Application Field Plans

The DS1743W-150+ finds application in various fields, including: 1. Industrial control systems: It provides reliable data storage for critical process control parameters. 2. Medical devices: The non-volatile nature of the DS1743W-150+ ensures that patient data is preserved during power interruptions. 3. Power grid equipment: It offers secure storage for critical power system data, ensuring uninterrupted operation.

Detailed and Complete Alternative Models

1. DS1234W-150+: Similar to the DS1743W-150+, but with a smaller memory organization of 16K x 8 bits.
2. DS1845W-150+: Offers a larger memory capacity of 64K x 8 bits, suitable for applications requiring more storage.

In conclusion, the DS1743W-150+ is a non-volatile static RAM that combines the benefits of non-volatile memory with the speed and reliability of static RAM. Its high data integrity, fast access times, and low power consumption make it a suitable choice for various applications in industrial, medical, and power grid sectors.