DS1249AB-85

Product Overview

Category

DS1249AB-85 belongs to the category of non-volatile static random-access memory (NVSRAM).

Use

It is primarily used for storing critical data in applications that require both high-speed read/write operations and non-volatility.

Characteristics

• Non-volatile: Retains data even when power is lost.
• High-speed operation: Allows for fast read and write access.
• Low power consumption: Optimized for energy efficiency.
• Durable: Withstands harsh environmental conditions.
• Reliable: Provides long-term data retention.

Package

DS1249AB-85 is available in a standard 32-pin dual in-line package (DIP).

Essence

The essence of DS1249AB-85 lies in its ability to combine the benefits of both RAM and non-volatile memory, making it suitable for applications where data integrity is crucial.

Packaging/Quantity

Each DS1249AB-85 unit is packaged individually and is available for purchase as a single unit or in bulk quantities.

Specifications

• Memory capacity: 1 Megabit (128K x 8)
• Operating voltage: 4.5V to 5.5V
• Access time: 85ns
• Data retention: Minimum 10 years
• Operating temperature range: -40°C to +85°C

Detailed Pin Configuration

The DS1249AB-85 has a total of 32 pins, each serving a specific function. The pin configuration is as follows:

1. Chip Enable (CE)
2. Output Enable (OE)
3. Write Enable (WE)
4. Address Inputs (A0-A16)
5. Data Inputs/Outputs (DQ0-DQ7)
6. Power Supply (VCC)
7. Ground (GND)

(Note: The remaining pins are not listed here for brevity.)

Functional Features

• High-speed read and write operations
• Non-volatile data storage
• Automatic store on power loss
• Software-controlled recall of stored data
• Low-power standby mode
• Hardware and software write protection options

Advantages and Disadvantages

Advantages

• Combines the benefits of RAM and non-volatile memory
• Fast access times
• Durable and reliable
• Suitable for critical data storage applications

Disadvantages

• Relatively higher cost compared to traditional RAM
• Limited storage capacity compared to other non-volatile memory options

Working Principles

DS1249AB-85 utilizes a combination of volatile and non-volatile memory technologies. It employs a volatile static random-access memory (SRAM) array for high-speed read/write operations, while incorporating non-volatile electrically erasable programmable read-only memory (EEPROM) cells to retain data during power loss.

Detailed Application Field Plans

DS1249AB-85 finds application in various fields where data integrity is crucial, such as: - Industrial automation systems - Medical equipment - Automotive electronics - Aerospace systems - Communication devices

Detailed and Complete Alternative Models

1. DS1249AB-70: Similar to DS1249AB-85 but with an access time of 70ns.
2. DS1249AB-100: Similar to DS1249AB-85 but with an access time of 100ns.
3. DS1249AB-120: Similar to DS1249AB-85 but with an access time of 120ns.

(Note: The list above includes only a few alternative models for reference.)

In conclusion, DS1249AB-85 is a non-volatile static random-access memory that combines the advantages of RAM and non-volatile memory. With its high-speed operation, low power consumption, and durability, it is well-suited for applications requiring both fast access times and data retention in the event of power loss.