AT28C64E-12TU

Product Overview

Category

AT28C64E-12TU belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

This product is commonly used for non-volatile storage in various electronic devices, such as microcontrollers, computers, and consumer electronics.

Characteristics

• Non-volatile: The stored data remains even when power is removed.
• Electrically erasable: Data can be erased and reprogrammed electronically.
• High storage capacity: The AT28C64E-12TU has a capacity of 64 kilobits (8 kilobytes).
• Low power consumption: It operates at low voltage levels, making it energy-efficient.
• Fast access time: The chip has a maximum access time of 120 nanoseconds.

Package

The AT28C64E-12TU comes in a standard 28-pin dual in-line package (DIP), which is widely used in the industry.

Essence

The essence of this product lies in its ability to store and retrieve digital information reliably and efficiently.

Packaging/Quantity

The AT28C64E-12TU 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 manufacturer and customer requirements.

Specifications

• Supply Voltage: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Maximum Access Time: 120 ns
• Endurance: 1,000,000 erase/write cycles
• Data Retention: 10 years

Detailed Pin Configuration

The AT28C64E-12TU 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. DQ0-DQ7: Data Input/Output

Functional Features

• Random access: Allows reading and writing of data at any address location.
• Byte-wise programming: Enables individual bytes to be programmed without affecting others.
• Hardware and software protection: Provides mechanisms to prevent accidental erasure or modification of stored data.
• High reliability: The AT28C64E-12TU is designed to withstand harsh environmental conditions and has built-in error correction capabilities.

Advantages and Disadvantages

Advantages

• Non-volatile storage: Data remains intact even during power loss.
• Electrically erasable: Allows for easy reprogramming without the need for additional equipment.
• High storage capacity: Offers ample space for storing critical information.
• Low power consumption: Helps prolong battery life in portable devices.
• Fast access time: Facilitates quick retrieval of data.

Disadvantages

• Limited endurance: The chip has a finite number of erase/write cycles before it may become unreliable.
• Relatively higher cost compared to other memory technologies.
• Requires careful handling to avoid electrostatic discharge (ESD) damage.

Working Principles

The AT28C64E-12TU utilizes a combination of electronic circuits and memory cells to store and retrieve data. When powered on, the chip's control signals allow for reading or writing operations. During a write operation, the desired data is applied to the input pins and stored in the appropriate memory cells. Reading involves accessing specific memory locations and retrieving the stored data.

Detailed Application Field Plans

The AT28C64E-12TU finds applications in various fields, including:

1. Embedded systems: Used for firmware storage in microcontrollers and system-on-chip (SoC) devices.
2. Computer memory expansion: Provides additional storage capacity for desktop and laptop computers.
3. Automotive electronics: Used in engine control units (ECUs), infotainment systems, and other automotive applications.
4. Industrial automation: Enables data storage in programmable logic controllers (PLCs) and other industrial equipment.
5. Consumer electronics: Found in devices such as smart TVs, set-top boxes, and gaming consoles.

Detailed and Complete Alternative Models

1. AT28C64B-15PU: Similar to AT28C64E-12TU but with a higher access time of 150 ns.
2. AT28C256-15PC: Offers a larger storage capacity of 256 kilobits (32 kilobytes).
3. AT29C010A-12PC: Flash memory alternative with a capacity of 1 megabit (128 kilobytes).

These alternative models provide similar functionality and can be considered based on specific requirements and compatibility with existing systems.

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