AT28HC256-12FM/883

Introduction

The AT28HC256-12FM/883 is a high-performance, low-power electrically erasable and programmable read-only memory (EEPROM) device. This entry provides an overview of the product, including its category, use, characteristics, package, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Product Category and Use

The AT28HC256-12FM/883 belongs to the category of non-volatile memory devices and is primarily used for storing and retrieving data in electronic systems. It is commonly utilized in embedded systems, microcontrollers, and other digital applications where non-volatile storage is required.

Characteristics

• High Performance: The AT28HC256-12FM/883 offers fast read and write operations, making it suitable for applications requiring quick access to stored data.
• Low Power Consumption: This EEPROM device is designed to operate efficiently with minimal power consumption, contributing to energy-efficient system designs.
• Reliable Data Retention: With robust data retention capabilities, the AT28HC256-12FM/883 ensures the integrity of stored information over extended periods.
• Extended Temperature Range: The -40°C to 125°C operating temperature range makes this device suitable for use in diverse environmental conditions.

Package and Quantity

The AT28HC256-12FM/883 is available in a compact and durable package that facilitates easy integration into circuit boards. It is typically offered in tape-and-reel packaging, with varying quantities to accommodate different production needs.

Specifications

• Memory Capacity: 256 kilobits (32 kilobytes)
• Operating Voltage: 4.5V to 5.5V
• Access Time: 120ns
• Interface: Parallel
• Endurance: At least 100,000 erase/write cycles
• Data Retention: Minimum of 10 years

Detailed Pin Configuration

The AT28HC256-12FM/883 features a standard parallel interface with address, data, control, and power pins. A detailed pinout diagram is provided below:

[Insert detailed pin configuration diagram here]

Functional Features

• Parallel Interface: The device communicates with the host system through a parallel interface, enabling efficient data transfer.
• Erase and Write Operations: The AT28HC256-12FM/883 supports both electrically erasable and programmable read-only memory functions, allowing for flexible data manipulation.
• Hardware Protection: Built-in hardware protection mechanisms safeguard against accidental data corruption during write and erase operations.

Advantages and Disadvantages

Advantages

• Fast access times enhance system performance.
• Low power consumption contributes to energy efficiency.
• Reliable data retention ensures long-term integrity of stored information.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Parallel interface may require additional circuitry for interfacing with modern microcontrollers.

Working Principles

The AT28HC256-12FM/883 operates by utilizing electrical signals to perform write, read, and erase operations on the memory cells within the device. When data is written or erased, the underlying semiconductor technology enables the alteration of specific memory locations without the need for physical movement or mechanical processes.

Detailed Application Field Plans

The AT28HC256-12FM/883 is well-suited for various application fields, including: - Embedded Systems: Used for program storage in microcontroller-based systems. - Industrial Control Systems: Provides non-volatile storage for critical parameters and configuration data. - Automotive Electronics: Utilized for storing calibration tables and firmware in automotive control units.

Detailed and Complete Alternative Models

Several alternative models to the AT28HC256-12FM/883 exist, offering similar functionality and compatibility with different system requirements. Some notable alternatives include: - AT29C256: Offers similar capacity and performance with a different interface. - M27C256B: Utilizes older EPROM technology but provides comparable storage capabilities.

In conclusion, the AT28HC256-12FM/883 is a versatile EEPROM device with a focus on high performance, low power consumption, and reliable data retention. Its application spans across various industries, and while it has certain limitations, it remains a popular choice for non-volatile memory storage in electronic systems.

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