AT28LV256-25PC

Product Overview

Category

AT28LV256-25PC belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is primarily used for storing and retrieving data in electronic devices. It provides non-volatile memory storage, meaning that the stored data remains even when power is removed.

Characteristics

• Non-volatile memory: Retains data even without power supply.
• Programmable: Can be written to and erased multiple times.
• High capacity: Offers 256 kilobits (32 kilobytes) of storage space.
• Low power consumption: Operates efficiently with minimal power requirements.

Package

The AT28LV256-25PC comes in a standard dual in-line package (DIP), which consists of two parallel rows of pins.

Essence

The essence of AT28LV256-25PC lies in its ability to provide reliable and flexible data storage solutions for various electronic applications.

Packaging/Quantity

This product is typically packaged in anti-static tubes or trays to prevent damage from electrostatic discharge during transportation and storage. The quantity per package varies depending on the supplier.

Specifications

• Memory Capacity: 256 kilobits (32 kilobytes)
• Operating Voltage: 2.7V - 5.5V
• Access Time: 250 nanoseconds
• Operating Temperature Range: -40°C to +85°C
• Data Retention: 10 years

Detailed Pin Configuration

The AT28LV256-25PC has a total of 28 pins, each serving a specific function. Here is a detailed pin configuration:

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. NC: No Connection
8. I/O0-I/O7: Data Input/Output

Functional Features

• High-speed access: The AT28LV256-25PC offers fast data retrieval and storage capabilities, ensuring efficient operation in time-sensitive applications.
• Easy integration: This PROM chip can be easily integrated into various electronic systems due to its standard pin configuration and compatibility with common microcontrollers.
• Multiple write cycles: The ability to write and erase data multiple times allows for flexibility in updating stored information.
• Low power consumption: The AT28LV256-25PC is designed to operate efficiently with minimal power requirements, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even during power loss.
• High capacity provides ample storage space for various applications.
• Compatibility with common microcontrollers simplifies integration.
• Fast access time enables quick data retrieval.

Disadvantages

• Limited write endurance: The number of write and erase cycles is finite, which may restrict certain applications requiring frequent updates.
• Relatively higher cost compared to other memory technologies.

Working Principles

The AT28LV256-25PC utilizes a floating-gate transistor technology to store and retrieve data. When data is written, an electrical charge is trapped in the floating gate, altering the transistor's behavior. This change in behavior allows the stored data to be read back accurately. The data can be erased by removing the trapped charge, resetting the transistor to its original state.

Detailed Application Field Plans

The AT28LV256-25PC finds application in various fields, including but not limited to:

1. Embedded Systems: Used for firmware storage in microcontrollers and other embedded devices.
2. Automotive Electronics: Provides non-volatile memory for storing critical data in automotive systems such as engine control units (ECUs) and infotainment systems.
3. Industrial Automation: Enables data storage in programmable logic controllers (PLCs) and other automation equipment.
4. Consumer Electronics: Used in devices like gaming consoles, set-top boxes, and digital cameras for storing firmware and user data.

Detailed and Complete Alternative Models

1. AT28C256-15PC: Similar to AT28LV256-25PC but operates at a slower access time of 150 nanoseconds.
2. AT28HC256-12PC: Offers higher endurance with extended write cycles compared to the AT28LV256-25PC.
3. AM29F040B-90JC: Flash memory alternative with larger capacity (4 megabits) and faster access time (90 nanoseconds).

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

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