AT27BV256-12RI

Product Overview

Category

AT27BV256-12RI 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 AT27BV256-12RI retains data even when power is removed.
• High capacity: It has a storage capacity of 256 kilobits (32 kilobytes).
• Fast access time: The device operates at a speed of 120 nanoseconds.
• Low power consumption: It requires minimal power to operate efficiently.

Package

The AT27BV256-12RI is available in a standard integrated circuit (IC) package.

Essence

The essence of this product lies in its ability to provide reliable and non-volatile storage for electronic systems.

Packaging/Quantity

The AT27BV256-12RI is typically packaged in reels or tubes, with each containing a specific quantity of devices.

Specifications

• Storage Capacity: 256 kilobits (32 kilobytes)
• Access Time: 120 nanoseconds
• Operating Voltage: 2.7V - 3.6V
• Temperature Range: -40°C to +85°C
• Interface: Parallel

Detailed Pin Configuration

The AT27BV256-12RI has a total of 28 pins. Here is the detailed pin configuration:

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

Functional Features

• Random Access: Allows for direct access to any location within the memory array.
• Byte-Writable: Enables individual bytes to be written without affecting the rest of the memory.
• Erasable: Supports full chip erasure or sector erasure for data modification.
• High Reliability: Provides robust and reliable data storage.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data retention even during power loss.
• Fast access time allows for quick retrieval of information.
• Low power consumption prolongs battery life in portable devices.
• High reliability ensures data integrity over extended periods.

Disadvantages

• Limited storage capacity compared to other memory devices.
• Parallel interface may require additional circuitry for compatibility with modern systems.
• Erasing and writing operations can be relatively slow compared to read operations.

Working Principles

The AT27BV256-12RI utilizes a combination of electronic circuits and non-volatile memory cells to store and retrieve digital information. It employs a parallel interface to communicate with the host system, allowing for efficient data transfer.

When powered on, the device is ready to accept commands from the host system. The address inputs specify the location within the memory array where data needs to be accessed or modified. The chip enable (CE), output enable (OE), and write enable (WE) pins control the read, write, and erase operations.

During a read operation, the specified address is decoded, and the corresponding data is retrieved from the memory array. For write and erase operations, the data and command signals are applied to the appropriate pins, triggering the necessary internal processes.

Detailed Application Field Plans

The AT27BV256-12RI finds applications in various electronic systems, including but not limited to:

1. Embedded Systems: Used for program storage in microcontrollers and microprocessors.
2. Communication Devices: Provides non-volatile storage for firmware and configuration data.
3. Automotive Electronics: Stores critical information such as calibration data and fault codes.
4. Industrial Control Systems: Utilized for storing parameters, settings, and program code.
5. Consumer Electronics: Used in devices like digital cameras, printers, and set-top boxes.

Detailed and Complete Alternative Models

1. AT27C256R-12RI: Similar to the AT27BV256-12RI but with a different programming method.
2. AT28C256-15PU: Offers the same storage capacity but operates at a slower speed.
3. AT29C256-90JI: Provides higher endurance and faster write times compared to the AT27BV256-12RI.

These alternative models offer similar functionality and can be considered as replacements for the AT27BV256-12RI based on specific requirements.

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