AT28C256-15FM/883

Product Overview

Category

AT28C256-15FM/883 belongs to the category of non-volatile memory devices.

Use

This product is primarily used for storing and retrieving digital information in electronic systems.

Characteristics

• Non-volatile: The stored data remains intact even when power is removed.
• High capacity: The AT28C256-15FM/883 has a storage capacity of 256 kilobits (32 kilobytes).
• Fast access time: It operates at a speed of 150 nanoseconds, allowing for quick data retrieval.
• Low power consumption: The device is designed to minimize power usage.
• Durable: It can withstand harsh environmental conditions due to its military-grade construction.

Package

The AT28C256-15FM/883 is available in a ceramic package, which provides excellent protection against external factors such as moisture and temperature variations.

Essence

This product is an essential component in various electronic systems, enabling reliable and long-term data storage.

Packaging/Quantity

The AT28C256-15FM/883 is typically packaged in trays or tubes, with each containing a specific quantity of devices. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Storage Capacity: 256 kilobits (32 kilobytes)
• Access Time: 150 nanoseconds
• Supply Voltage: 5V
• Operating Temperature Range: -55°C to +125°C
• Package Type: Ceramic

Detailed Pin Configuration

The AT28C256-15FM/883 has a total of 28 pins, each serving a specific function. The pin configuration is as follows:

1. A0-A14: Address Inputs
2. CE: Chip Enable
3. OE: Output Enable
4. WE: Write Enable
5. VCC: Power Supply
6. GND: Ground
7. I/O0-I/O7: Data Inputs/Outputs

Functional Features

• Random Access: The AT28C256-15FM/883 allows for direct access to any memory location, facilitating efficient data retrieval.
• Byte-Writable: It supports byte-level write operations, enabling selective modification of stored data.
• High Reliability: The device incorporates error detection and correction mechanisms, ensuring data integrity.
• Low Power Consumption: The AT28C256-15FM/883 is designed to minimize power usage, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even during power loss.
• High storage capacity for a wide range of applications.
• Fast access time allows for quick data retrieval.
• Durable construction suitable for harsh environments.
• Low power consumption prolongs battery life.

Disadvantages

• Limited storage capacity compared to newer memory technologies.
• Relatively slower access time compared to modern memory devices.

Working Principles

The AT28C256-15FM/883 utilizes electrically erasable programmable read-only memory (EEPROM) technology. It stores data by trapping electrical charges in floating gate transistors. These charges can be selectively removed or added using specific voltage levels applied to the control pins. This enables both reading and writing of data to the memory array.

Detailed Application Field Plans

The AT28C256-15FM/883 finds application in various fields, including: 1. Embedded Systems: Used for firmware storage in microcontrollers and other embedded devices. 2. Automotive Electronics: Stores critical data such as calibration parameters and configuration settings. 3. Industrial Control Systems: Provides non-volatile storage for program code and system parameters. 4. Aerospace and Defense: Used in avionics systems, missile guidance, and secure communication devices.

Detailed and Complete Alternative Models

1. AT28C256-12PC: Similar to the AT28C256-15FM/883 but operates at a slower access time of 120 nanoseconds.
2. AT28C256-20PI: Offers faster access time of 200 nanoseconds compared to the AT28C256-15FM/883.
3. AT28C256-25DM/883: Military-grade variant with an extended operating temperature range of -55°C to +150°C.

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

In conclusion, the AT28C256-15FM/883 is a non-volatile memory device with a high storage capacity and fast access time. It finds application in various fields, offering reliable data storage and retrieval capabilities. While it may have limitations compared to newer memory technologies, its durability and low power consumption make it a suitable choice for many electronic systems.