AT28HC256-90JU

Product Overview

Category

AT28HC256-90JU belongs to the category of high-speed, high-capacity EEPROM (Electrically Erasable Programmable Read-Only Memory) chips.

Use

This product is commonly used in electronic devices for non-volatile data storage. It allows for easy and efficient read and write operations, making it suitable for applications that require frequent data updates.

Characteristics

• High speed: The AT28HC256-90JU operates at a fast speed, allowing for quick data access and transfer.
• High capacity: With a capacity of 256 kilobits, this EEPROM chip offers ample storage space for various data types.
• Non-volatile: The stored data remains intact even when power is disconnected, ensuring data integrity.
• Reliable: The AT28HC256-90JU has built-in error detection and correction mechanisms, enhancing data reliability.
• Low power consumption: This chip is designed to minimize power usage, making it suitable for battery-powered devices.

Package

The AT28HC256-90JU comes in a compact and durable package, which protects the chip from physical damage and environmental factors. The specific package type for this model is JU.

Essence

The essence of the AT28HC256-90JU lies in its ability to provide high-speed, high-capacity, and reliable non-volatile data storage for electronic devices.

Packaging/Quantity

This product is typically packaged in reels or tubes, depending on the manufacturer's specifications. The quantity per package may vary, but it is commonly available in quantities of 100 or more.

Specifications

• Manufacturer: Atmel Corporation
• Part Number: AT28HC256-90JU
• Memory Type: EEPROM
• Capacity: 256 kilobits
• Operating Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Interface: Serial I2C
• Speed: 90 nanoseconds (access time)
• Data Retention: 10 years

Detailed Pin Configuration

The AT28HC256-90JU has a total of 8 pins, each serving a specific function:

1. VCC: Power supply voltage input
2. GND: Ground connection
3. SDA: Serial data input/output for I2C communication
4. SCL: Serial clock input for I2C communication
5. WP: Write Protect pin for write protection functionality
6. A0-A14: Address inputs for memory addressing
7. NC: No Connection (reserved for future use)
8. NC: No Connection (reserved for future use)

Functional Features

• High-speed operation allows for quick data access and transfer.
• Non-volatile memory ensures data retention even without power.
• Built-in error detection and correction mechanisms enhance data reliability.
• Low power consumption makes it suitable for battery-powered devices.
• Easy integration with microcontrollers and other electronic components.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient data handling.
• Large storage capacity accommodates various data types.
• Non-volatile memory ensures data integrity during power interruptions.
• Error detection and correction mechanisms enhance data reliability.
• Low power consumption prolongs battery life in portable devices.

Disadvantages

• Limited compatibility with certain microcontrollers or systems.
• Relatively higher cost compared to lower-capacity EEPROM chips.
• Limited availability in some regions or markets.

Working Principles

The AT28HC256-90JU operates based on the principles of EEPROM technology. It utilizes electrically controlled 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. To read the data, the charge level of the floating gate is measured, allowing for accurate retrieval of stored information.

Detailed Application Field Plans

The AT28HC256-90JU finds applications in various electronic devices that require non-volatile data storage with high-speed access. Some common application fields include:

1. Embedded Systems: Used in microcontrollers and embedded systems for program storage and data logging.
2. Automotive Electronics: Employed in automotive control units for storing calibration data, fault codes, and configuration settings.
3. Consumer Electronics: Integrated into devices like smart TVs, set-top boxes, and audio players for firmware storage and user data management.
4. Industrial Automation: Utilized in industrial control systems for storing configuration parameters, production data, and event logs.
5. Medical Devices: Incorporated into medical equipment for storing patient data, device configurations, and firmware updates.

Detailed and Complete Alternative Models

1. AT28C256-15PU: 256 kilobit EEPROM chip with a parallel interface and a 150 nanosecond access time.
2. AT