AT28C64X-25JI

Product Overview

Category

AT28C64X-25JI belongs to the category of non-volatile memory devices.

Use

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

Characteristics

• Non-volatile: The stored data is retained even when power is removed.
• High capacity: The AT28C64X-25JI has a capacity of 64 kilobits (8 kilobytes).
• Fast access time: It operates at a speed of 250 nanoseconds.
• Low power consumption: It requires minimal power to operate efficiently.

Package

The AT28C64X-25JI is available in a 32-pin plastic J-leaded chip carrier package.

Essence

This product is an electrically erasable programmable read-only memory (EEPROM) that allows users to write, erase, and reprogram data multiple times.

Packaging/Quantity

The AT28C64X-25JI is typically packaged in reels or tubes, with a quantity of 100 units per package.

Specifications

• Supply voltage: 2.7V to 5.5V
• Operating temperature range: -40°C to +85°C
• Data retention: 10 years
• Endurance: 1,000,000 write cycles

Detailed Pin Configuration

The AT28C64X-25JI has a total of 32 pins, each serving a specific function. Here is a detailed pin configuration:

1. A0-A13: Address inputs
2. CE: Chip enable input
3. OE: Output enable input
4. WE: Write enable input
5. I/O0-I/O7: Data input/output
6. VCC: Power supply
7. GND: Ground

Functional Features

• Byte-wise programmable: Allows individual bytes to be programmed or erased.
• High-speed operation: Enables fast read and write operations.
• Automatic erase-before-write: Simplifies the programming process by automatically erasing the targeted memory location before writing new data.
• Software and hardware data protection: Provides security features to prevent accidental modification or deletion of stored data.

Advantages and Disadvantages

Advantages

• Non-volatile storage: Data is retained even without power, ensuring data integrity.
• High capacity: Offers ample storage space for various applications.
• Fast access time: Allows for quick retrieval of data.
• Low power consumption: Helps conserve energy in electronic systems.

Disadvantages

• Limited endurance: The EEPROM has a finite number of write cycles before it may become unreliable.
• Relatively small capacity: Compared to other non-volatile memory devices, the AT28C64X-25JI has a relatively lower capacity.

Working Principles

The AT28C64X-25JI utilizes a combination of electrically controlled gates and floating gate transistors to store and retrieve data. When data is written, an electrical charge is applied to the floating gate, altering its conductivity and storing the desired information. During read operations, the stored charge is measured to determine the stored data.

Detailed Application Field Plans

The AT28C64X-25JI finds application in various fields, including but not limited to: - Embedded systems - Automotive electronics - Industrial control systems - Consumer electronics - Communication devices

Detailed and Complete Alternative Models

1. AT28C64B-15PU: Similar to AT28C64X-25JI, but operates at a slower speed (150 nanoseconds).
2. AT28C256-15PC: Offers higher capacity (256 kilobits) compared to AT28C64X-25JI.
3. AT28HC256E-90PI: Provides extended temperature range (-40°C to +125°C) for more demanding environments.

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

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