DS1646-120

Product Overview

Category: Integrated Circuit (IC)

Use: The DS1646-120 is a non-volatile static RAM (NVSRAM) integrated circuit. It combines the functionality of a standard SRAM with that of an EEPROM, providing both volatile and non-volatile storage capabilities.

Characteristics: - Non-volatile storage: Retains data even when power is lost - High-speed access: Comparable to standard SRAMs - Low power consumption: Ideal for battery-powered applications - Wide operating voltage range: 2.7V to 5.5V - Industry-standard 28-pin package

Package: The DS1646-120 is available in a 28-pin dual-inline package (DIP), which is commonly used for ICs. This package provides easy integration into various electronic systems.

Essence: The essence of the DS1646-120 lies in its ability to combine the benefits of volatile and non-volatile memory technologies. It offers reliable data storage without the need for external backup power, making it suitable for applications where data integrity is critical.

Packaging/Quantity: The DS1646-120 is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier and customer requirements.

Specifications

• Memory capacity: 16 kilobits (2 kilobytes)
• Access time: 70 ns
• Data retention: Up to 10 years
• Operating temperature range: -40°C to +85°C
• Write endurance: 1 million cycles

Pin Configuration

The DS1646-120 features a 28-pin configuration with the following pin assignments:

1. Chip Enable (CE)
2. Output Enable (OE)
3. Write Enable (WE)
4. Address Inputs (A0-A10)
5. Data Inputs/Outputs (DQ0-DQ7)
6. Ground (GND)
7. Vcc (Power Supply)

Functional Features

• Non-volatile storage: The DS1646-120 uses an integrated EEPROM to store data even when power is lost, ensuring data integrity and reliability.
• High-speed access: With an access time of 70 ns, the DS1646-120 provides fast read and write operations, comparable to standard SRAMs.
• Low power consumption: The IC is designed to minimize power usage, making it suitable for battery-powered devices and energy-efficient applications.
• Wide operating voltage range: The DS1646-120 can operate within a voltage range of 2.7V to 5.5V, allowing compatibility with various electronic systems.

Advantages and Disadvantages

Advantages: - Reliable non-volatile storage - Fast access times - Low power consumption - Wide operating voltage range

Disadvantages: - Limited memory capacity compared to other storage technologies - Relatively higher cost per bit compared to standard SRAMs

Working Principles

The DS1646-120 utilizes a combination of volatile and non-volatile memory technologies. It employs a standard SRAM array for fast read and write operations. Additionally, it integrates an EEPROM to provide non-volatile storage capabilities. When power is applied, the IC operates as a regular SRAM, allowing data to be read and written. In the event of a power loss, the EEPROM automatically transfers the contents of the SRAM array into its non-volatile memory cells, preserving the data.

Detailed Application Field Plans

The DS1646-120 finds applications in various fields where reliable data storage and retrieval are essential. Some potential application areas include:

1. Industrial control systems
2. Automotive electronics
3. Medical devices
4. Data loggers
5. Smart meters
6. Gaming consoles

Alternative Models

1. DS1245-120: Similar to the DS1646-120, but with a smaller memory capacity of 8 kilobits.
2. DS1746-120: Offers the same functionality as the DS1646-120 but with a larger memory capacity of 32 kilobits.
3. M48Z02-120: An alternative from a different manufacturer, offering comparable features and specifications.

These alternative models provide options with varying memory capacities to suit different application requirements.

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