AT27C256R-90PI

Product Overview

Category

The AT27C256R-90PI belongs to the category of programmable read-only memory (PROM) chips.

Use

It is used for storing and retrieving data in electronic devices, such as microcontrollers, computers, and consumer electronics.

Characteristics

• Non-volatile memory
• High-speed access
• Low power consumption
• Durable and reliable
• Wide operating voltage range

Package

The AT27C256R-90PI is typically available in a dual in-line package (DIP) format.

Essence

The essence of this product lies in its ability to store data permanently and retrieve it at high speeds.

Packaging/Quantity

It is commonly packaged in tubes or trays and is available in various quantities depending on the manufacturer's specifications.

Specifications

• Capacity: 256 kilobits
• Access Time: 90 nanoseconds
• Operating Voltage: 4.5V to 5.5V
• Operating Temperature: -40°C to 125°C
• Package Type: 28-pin DIP

Detailed Pin Configuration

The AT27C256R-90PI has a 28-pin configuration with specific pins dedicated to address lines, data input/output, control signals, and power supply connections.

Functional Features

• Read-only memory functionality
• Parallel data transfer
• Address decoding for efficient data retrieval
• Write protection mechanism

Advantages

• Non-volatile storage
• Fast access times
• Low power consumption
• Wide operating temperature range
• Reliable data retention

Disadvantages

• Inability to modify stored data once programmed
• Limited capacity compared to modern storage technologies
• Higher cost per bit compared to other memory options

Working Principles

The AT27C256R-90PI operates based on the principle of electrical charge trapping within the memory cells, allowing for the permanent storage of data without the need for continuous power supply.

Detailed Application Field Plans

• Embedded systems
• Industrial control systems
• Automotive electronics
• Medical devices
• Communication equipment

Detailed and Complete Alternative Models

1. AT28C256-15PU: Similar capacity with faster access time
2. M27C256B-12F1: Lower power consumption with comparable performance
3. W27C512-45Z: Higher capacity option with slightly slower access time

In conclusion, the AT27C256R-90PI is a reliable and efficient PROM chip suitable for various electronic applications, offering non-volatile data storage and fast access times. While it has certain limitations, its functional features and wide application field make it a valuable component in electronic design and manufacturing.

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