AT28C64X-25PI

Product Overview

Category

AT28C64X-25PI 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-25PI has a storage capacity of 64 kilobits (8 kilobytes).
• Fast access time: It operates at a speed of 250 nanoseconds, allowing for quick data retrieval.
• Low power consumption: The device is designed to minimize power usage, making it suitable for battery-powered applications.

Package

The AT28C64X-25PI is available in a 28-pin plastic dual in-line package (PDIP).

Essence

The essence of AT28C64X-25PI lies in its ability to provide reliable and non-volatile storage for electronic systems.

Packaging/Quantity

The device is typically packaged in tubes or trays, with each tube or tray containing a specific quantity of AT28C64X-25PI chips. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Operating voltage: 5V
• Organization: 8K x 8 bits
• Access time: 250 ns
• Standby current: 100 µA (max)
• Operating temperature range: -40°C to +85°C
• Data retention: 10 years (minimum)

Detailed Pin Configuration

The AT28C64X-25PI has a total of 28 pins, each serving a specific purpose. Here is the detailed pin configuration:

1. A0-A12: 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 (5V)
7. GND: Ground

Functional Features

• Random access: The device allows for random access to any location within its memory space.
• Byte-wise programming: It supports byte-wise programming, enabling efficient data storage and retrieval.
• Hardware data protection: The AT28C64X-25PI includes hardware features to protect stored data from accidental modification.

Advantages and Disadvantages

Advantages

• Non-volatile storage: The data remains intact even in the absence of power.
• High capacity: Ample storage space for various applications.
• Fast access time: Quick retrieval of data.
• Low power consumption: Suitable for battery-powered devices.

Disadvantages

• Limited rewrite cycles: The device has a finite number of write cycles before it may become unreliable.
• Relatively larger package size: The 28-pin PDIP package may require more board space compared to smaller form factors.

Working Principles

The AT28C64X-25PI utilizes electrically erasable programmable read-only memory (EEPROM) technology. It stores data by trapping electrical charges within floating gate transistors. These charges can be selectively removed or added using specific voltage levels, allowing for data programming and erasure.

Detailed Application Field Plans

The AT28C64X-25PI finds application in various electronic systems, including but not limited to: - Microcontrollers - Embedded systems - Industrial control systems - Automotive electronics - Communication devices

Detailed and Complete Alternative Models

• AT28C64B-15PU: Similar specifications with a lower access time of 150 ns.
• AT28C256-15PU: Higher capacity (256 kilobits) with similar characteristics and pin configuration.
• AT28HC256E-90PU: Extended temperature range (-40°C to +125°C) with a capacity of 256 kilobits.

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

In conclusion, the AT28C64X-25PI is a non-volatile memory device that provides reliable storage for electronic systems. With its high capacity, fast access time, and low power consumption, it is well-suited for various applications. However, it has limitations such as limited rewrite cycles and a relatively larger package size. Understanding its working principles and considering alternative models can help users make informed decisions when incorporating this device into their designs.