AT28C256-25LM/883-829

Product Overview

Category

AT28C256-25LM/883-829 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 AT28C256-25LM/883-829 has a storage capacity of 256 kilobits (32 kilobytes).
• Low power consumption: It operates at low power levels, making it suitable for battery-powered devices.
• High-speed operation: The device supports fast read and write operations.
• Durable: It can withstand harsh environmental conditions due to its military-grade construction.

Package

The AT28C256-25LM/883-829 is available in a ceramic dual-inline package (DIP).

Essence

This product is an electrically erasable programmable read-only memory (EEPROM) chip. It allows users to store and retrieve data electronically without the need for constant power supply.

Packaging/Quantity

The AT28C256-25LM/883-829 is typically packaged in tubes or trays, with each containing a specific quantity of chips. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Operating voltage: 5V
• Access time: 250 ns
• Organization: 32K x 8 bits
• Endurance: 10,000 write cycles
• Data retention: 100 years
• Temperature range: -55°C to +125°C

Detailed Pin Configuration

The AT28C256-25LM/883-829 has a total of 28 pins, which are assigned specific functions. Here is the detailed pin configuration:

1. A0-A14: Address inputs
2. CE: Chip enable
3. OE: Output enable
4. WE: Write enable
5. VCC: Power supply (5V)
6. GND: Ground
7. DQ0-DQ7: Data input/output

Functional Features

• Byte-wise programmable: The AT28C256-25LM/883-829 allows individual bytes to be programmed or erased, providing flexibility in data storage.
• High-speed operation: It supports fast read and write operations, enabling efficient data access.
• Low power consumption: The device operates at low power levels, making it suitable for battery-powered applications.
• Reliable data retention: The stored data remains intact for up to 100 years, ensuring long-term reliability.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data integrity even during power loss.
• High storage capacity for a wide range of applications.
• Military-grade construction for durability in harsh environments.
• Fast read and write operations for efficient data access.

Disadvantages

• Limited endurance of 10,000 write cycles.
• Requires external programming equipment for data modification.

Working Principles

The AT28C256-25LM/883-829 utilizes the principles of EEPROM technology. It stores data by trapping electric charges within floating gate transistors. These charges can be selectively removed or added using electrical signals, allowing data to be written or erased.

Detailed Application Field Plans

The AT28C256-25LM/883-829 finds applications 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 settings and vehicle parameters. 3. Industrial control systems: Provides non-volatile memory for storing configuration data and program code. 4. Aerospace and defense: Used in avionics systems and military-grade equipment for reliable data storage.

Detailed and Complete Alternative Models

1. AT28C256-12PC: Similar to the AT28C256-25LM/883-829, but operates at a slower access time of 120 ns.
2. AT28C256-15PU: Offers a faster access time of 150 ns compared to the -25LM/883-829 model.
3. AT28C256-20PI: Provides a higher endurance of 100,000 write cycles for more frequent data modifications.

These alternative models offer different specifications and features, allowing users to choose the most suitable option for their specific requirements.

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