DS1643-100

Product Overview

Category: Integrated Circuit (IC)

Use: The DS1643-100 is a non-volatile static RAM (NVSRAM) integrated circuit. It combines the functionality of a standard SRAM with that of an EEPROM, providing non-volatile storage capabilities.

Characteristics: - Non-volatile memory - Static random-access memory (SRAM) - Electrically erasable programmable read-only memory (EEPROM) - High-speed operation - Low power consumption

Package: The DS1643-100 is available in a 28-pin DIP (Dual In-line Package) format.

Essence: The essence of the DS1643-100 is its ability to retain data even when power is removed, making it suitable for applications requiring non-volatile memory.

Packaging/Quantity: The DS1643-100 is typically sold individually or in small quantities, packaged in anti-static tubes or trays.

Specifications

• Memory Size: 64 kilobits (8 kilobytes)
• Supply Voltage: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: Up to 10 years
• Write Endurance: 1 million cycles

Pin Configuration

The DS1643-100 has a total of 28 pins. Here is the detailed pin configuration:

1. VCC - Power supply voltage
2. GND - Ground
3. A0-A14 - Address inputs
4. CE - Chip enable
5. OE - Output enable
6. WE - Write enable
7. DQ0-DQ7 - Data input/output
8. SQW - Square wave output
9. RST - Reset input
10. NC - No connection

(Continued for pins 11-28)

Functional Features

1. Non-volatile Storage: The DS1643-100 combines SRAM and EEPROM functionality, allowing data to be retained even when power is removed.
2. High-Speed Operation: The integrated circuit offers fast read and write access times, making it suitable for applications requiring quick data retrieval.
3. Low Power Consumption: The DS1643-100 is designed to minimize power consumption, making it energy-efficient and suitable for battery-powered devices.

Advantages and Disadvantages

Advantages: - Non-volatile memory ensures data retention - High-speed operation for quick data access - Low power consumption for energy efficiency

Disadvantages: - Limited storage capacity (64 kilobits) - Relatively higher cost compared to standard SRAMs

Working Principles

The DS1643-100 utilizes a combination of SRAM and EEPROM technologies. When power is applied, the device operates as a standard SRAM, allowing for fast read and write operations. However, when power is removed, an internal circuitry automatically transfers the data from the SRAM cells to the non-volatile EEPROM cells, ensuring data retention.

Detailed Application Field Plans

The DS1643-100 can be used in various applications that require non-volatile memory with high-speed operation. Some potential application fields include:

1. Embedded Systems: The IC can be used in embedded systems to store critical configuration data or program code that needs to be retained during power cycles.
2. Data Logging: The DS1643-100 can be utilized in data logging applications where it is necessary to store collected data even when power is lost.
3. Industrial Automation: In industrial automation systems, the IC can be employed to store important parameters or calibration data that should not be lost during power interruptions.

Alternative Models

Here are some alternative models that offer similar functionality to the DS1643-100:

1. DS1245Y-100: This IC offers 64 kilobits of non-volatile SRAM with a 100ns access time.
2. FM1608B-100: A 64 kilobit non-volatile FRAM (Ferroelectric RAM) with a 100ns access time.
3. M48Z02-150PC1: This IC provides 256 kilobits of non-volatile SRAM with a 150ns access time.

These alternative models can be considered based on specific requirements and compatibility with the target application.

In conclusion, the DS1643-100 is a non-volatile static RAM integrated circuit that combines the functionality of an SRAM with an EEPROM. It offers high-speed operation, low power consumption, and data retention capabilities. With its various applications and alternative models available, the DS1643-100 provides a reliable solution for storing critical data in non-volatile memory systems.