AT28HC256-12JU-T

Product Overview

Category

AT28HC256-12JU-T belongs to the category of high-speed, low-power Electrically Erasable Programmable Read-Only Memory (EEPROM) chips.

Use

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

Characteristics

• High-speed operation: The AT28HC256-12JU-T offers fast read and write operations, making it suitable for applications requiring quick access to stored data.
• Low power consumption: This EEPROM chip is designed to minimize power consumption, making it ideal for battery-powered devices.
• Large storage capacity: With a capacity of 256 kilobits (32 kilobytes), the AT28HC256-12JU-T provides ample space for storing critical data.
• Extended temperature range: It can operate reliably in a wide temperature range, from -40°C to +85°C.
• High endurance: The AT28HC256-12JU-T supports a minimum of 100,000 erase/write cycles, ensuring long-term reliability.

Package

The AT28HC256-12JU-T comes in a 32-pin PLCC (Plastic Leaded Chip Carrier) package. This package offers good thermal performance and ease of handling during assembly.

Essence

The essence of the AT28HC256-12JU-T lies in its ability to provide reliable, high-speed, and low-power data storage in a compact form factor.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Supply voltage: 2.7V to 5.5V
• Operating current: 10 mA (typical)
• Standby current: 1 µA (typical)
• Access time: 120 ns
• Organization: 32K x 8 bits
• Interface: Serial Peripheral Interface (SPI)
• Data retention: 10 years

Detailed Pin Configuration

The AT28HC256-12JU-T has a total of 32 pins, which are assigned specific functions. The pin configuration is as follows:

1. Chip Enable (CE)
2. Output Enable (OE)
3. Write Enable (WE)
4. Address Inputs (A0-A14)
5. Data Inputs/Outputs (DQ0-DQ7)
6. Supply Voltage (VCC)
7. Ground (GND)

For a detailed pin diagram and function description, refer to the product datasheet.

Functional Features

• High-speed data transfer: The AT28HC256-12JU-T supports fast read and write operations, enabling efficient data transfer between the chip and the host device.
• Flexible interface: It utilizes the Serial Peripheral Interface (SPI) for communication, allowing easy integration with various microcontrollers and other devices.
• Low power consumption: With its optimized design, this EEPROM chip minimizes power consumption, extending battery life in portable devices.
• Reliable data storage: The AT28HC256-12JU-T ensures data integrity and long-term reliability through robust error detection and correction mechanisms.

Advantages and Disadvantages

Advantages

• Fast read and write operations
• Low power consumption
• Large storage capacity
• Extended temperature range
• High endurance

Disadvantages

• Limited availability of alternative models
• Higher cost compared to lower-capacity EEPROM chips

Working Principles

The AT28HC256-12JU-T operates based on the principles of electrically erasable programmable read-only memory. It uses a combination of transistors and floating gate technology to store and retrieve data. When a write operation is performed, an electric charge is trapped in the floating gate, altering the transistor's behavior and storing the desired data. The stored data can be read by applying appropriate voltage levels to the memory cells.

Detailed Application Field Plans

The AT28HC256-12JU-T finds applications in various fields, including:

1. Embedded systems: It is widely used in microcontroller-based embedded systems for storing program code, configuration data, and calibration values.
2. Industrial automation: This EEPROM chip is utilized in industrial control systems for storing critical parameters, such as sensor calibration data and system configurations.
3. Automotive electronics: It is employed in automotive electronic control units (ECUs) for storing vehicle-specific data, firmware updates, and fault codes.
4. Consumer electronics: The AT28HC256-12JU-T is used in devices like smart TVs, set-top boxes, and gaming consoles for storing user preferences, settings, and firmware updates.

Detailed and Complete Alternative Models

While the AT28HC256-12JU-T is a reliable EEPROM chip, there are alternative models available in the market with similar features and capacities. Some