AT28HC256-90TU

Product Overview

Category

AT28HC256-90TU 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
• Low power consumption
• Non-volatile memory
• Large storage capacity
• Reliable data retention
• Easy to interface with other electronic components

Package

AT28HC256-90TU comes in a small form factor package, making it suitable for space-constrained applications. The package type is typically a Thin Small Outline Package (TSOP).

Essence

The essence of AT28HC256-90TU lies in its ability to provide reliable and high-speed non-volatile memory storage for electronic devices.

Packaging/Quantity

AT28HC256-90TU is usually packaged in reels or tubes, depending on the manufacturer's preference. The quantity per package can vary, but it is commonly available in quantities of 100 or more.

Specifications

• Operating Voltage: 2.7V - 5.5V
• Capacity: 256 kilobits (32 kilobytes)
• Access Time: 90 nanoseconds
• Interface: Serial Peripheral Interface (SPI)
• Data Retention: Up to 10 years
• Endurance: 100,000 write cycles

Detailed Pin Configuration

The AT28HC256-90TU chip has a total of 28 pins. 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 Input/Output (DQ0-DQ7)
6. Supply Voltage (VCC)
7. Ground (GND)

Functional Features

• High-speed data transfer
• Byte-wise programmable
• Sector erase capability
• Hardware and software write protection
• Automatic sleep mode for power saving
• Built-in error detection and correction mechanisms

Advantages and Disadvantages

Advantages

• Fast access time allows for quick data retrieval
• Low power consumption prolongs battery life in portable devices
• Large storage capacity accommodates a wide range of applications
• Reliable data retention ensures data integrity over extended periods
• Easy integration with other electronic components simplifies system design

Disadvantages

• Limited endurance compared to other non-volatile memory technologies
• Relatively higher cost per bit compared to some alternative memory solutions
• Requires additional circuitry for programming and erasing operations

Working Principles

AT28HC256-90TU utilizes EEPROM technology, which allows for electrically erasing and reprogramming of data. The chip stores information in a grid of memory cells, where each cell can be individually programmed or erased using electrical signals. The stored data remains intact even when the power is turned off.

Detailed Application Field Plans

AT28HC256-90TU finds applications in various fields, including: 1. Microcontrollers and embedded systems 2. Automotive electronics 3. Industrial automation 4. Medical devices 5. Communication equipment

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to AT28HC256-90TU are: 1. AT28C256 - A slower version with an access time of 150 nanoseconds. 2. AT29C256 - A similar EEPROM chip with a different pin configuration. 3. AT25SF256 - A Serial Flash memory chip with faster access times and larger capacities.

These alternative models provide options based on specific requirements and constraints.

In conclusion, AT28HC256-90TU is a high-speed, low-power EEPROM chip that offers reliable non-volatile memory storage for various electronic devices. Its characteristics, specifications, pin configuration, functional features, advantages, and disadvantages make it suitable for a wide range of applications in different industries.