DS1746W-120+ - English Editing Encyclopedia Entry

Product Overview

Category

The DS1746W-120+ belongs to the category of non-volatile static RAM (NVSRAM) integrated circuits.

Use

This product is commonly used for data storage and retrieval in various electronic devices, including embedded systems, industrial control systems, and automotive applications.

Characteristics

• Non-volatile: The DS1746W-120+ retains data even when power is lost.
• High speed: It offers fast read and write access times.
• Low power consumption: The device operates at low power levels, making it suitable for battery-powered applications.
• Wide temperature range: It can function reliably in extreme temperature conditions.
• High endurance: The DS1746W-120+ has a high number of write cycles, ensuring long-term reliability.

Package

The DS1746W-120+ is available in a compact and durable package, which protects the integrated circuit from external factors such as moisture and physical damage.

Essence

The essence of the DS1746W-120+ lies in its ability to combine the benefits of both volatile and non-volatile memory technologies. It provides the speed and ease of use of traditional RAM while retaining data integrity during power interruptions.

Packaging/Quantity

The DS1746W-120+ is typically sold in reels or tubes, with each reel or tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the manufacturer and distributor.

Specifications

• Memory capacity: 1,024 kilobits (128 kilobytes)
• Operating voltage: 2.7V to 3.6V
• Access time: 120 nanoseconds
• Data retention: Over 10 years
• Write endurance: 1 million cycles
• Temperature range: -40°C to +85°C

Detailed Pin Configuration

The DS1746W-120+ features a standard pin configuration, as follows:

1. VCC: Power supply voltage
2. GND: Ground reference
3. CE: Chip enable
4. OE: Output enable
5. WE: Write enable
6. A0-A16: Address inputs
7. DQ0-DQ7: Data inputs/outputs
8. SQW/ALM: Square wave output or alarm output
9. RST: Reset input
10. NC: No connection (reserved)

Functional Features

• Non-volatile data storage: The DS1746W-120+ retains data even when power is lost, ensuring data integrity.
• High-speed access: It offers fast read and write access times, enabling efficient data retrieval and storage operations.
• Low power consumption: The device operates at low power levels, making it suitable for battery-powered applications.
• Automatic write protection: The DS1746W-120+ includes write protection circuitry to prevent accidental data corruption.
• Alarm functionality: It can generate an alarm signal based on user-defined conditions.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data integrity during power interruptions.
• Fast access times facilitate efficient data retrieval and storage.
• Low power consumption extends battery life in portable devices.
• Wide temperature range allows reliable operation in harsh environments.
• High endurance ensures long-term reliability.

Disadvantages

• Limited memory capacity compared to other storage technologies.
• Relatively higher cost per unit compared to traditional RAM.

Working Principles

The DS1746W-120+ combines volatile and non-volatile memory technologies. It utilizes a combination of static RAM (SRAM) and electrically erasable programmable read-only memory (EEPROM). During normal operation, the device functions as a high-speed SRAM, allowing fast read and write access. When power is lost, the DS1746W-120+ automatically switches to non-volatile EEPROM mode, ensuring data retention.

Detailed Application Field Plans

The DS1746W-120+ finds applications in various fields, including:

1. Embedded systems: It provides reliable data storage for microcontrollers and other embedded devices.
2. Industrial control systems: The DS1746W-120+ ensures data integrity in industrial automation and control applications.
3. Automotive electronics: It is used for storing critical data in automotive systems such as engine control units (ECUs) and infotainment systems.
4. Medical devices: The device offers non-volatile memory for medical equipment, ensuring data persistence during power interruptions.

Detailed and Complete Alternative Models

1. DS1235YW-120+: This NVSRAM IC offers similar specifications and features as the DS1746W-120+, with a different pin configuration.
2. M48Z02-150PC1: This non-volatile RAM chip provides a larger memory capacity of 2,048 kilobits (256 kilobytes) and operates at a slower access time