AT28HC256F-90JU

Product Overview

Category

AT28HC256F-90JU 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 AT28HC256F-90JU offers fast read and write access times, making it suitable for applications requiring quick data retrieval.
• 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), this chip provides ample space for storing critical data.
• Reliable data retention: The AT28HC256F-90JU ensures data integrity with its excellent endurance and long-term data retention capabilities.

Package

The AT28HC256F-90JU comes in a standard 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 AT28HC256F-90JU lies in its ability to provide reliable, high-speed, and low-power data storage solutions for a wide range of electronic devices.

Packaging/Quantity

This EEPROM chip is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of chips. The exact packaging and quantity may vary depending on the manufacturer's specifications.

Specifications

• Operating voltage: 2.7V to 5.5V
• Access time: 90 nanoseconds
• Organization: 32 kilobytes x 8 bits
• Interface: Serial Peripheral Interface (SPI)
• Write endurance: 100,000 cycles
• Data retention: 10 years

Detailed Pin Configuration

The AT28HC256F-90JU has a total of 32 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 Inputs/Outputs (DQ0-DQ7)
6. Supply Voltage (VCC)
7. Ground (GND)

(Note: The remaining pins are not listed for brevity.)

Functional Features

High-Speed Operation

The AT28HC256F-90JU offers fast read and write access times, allowing for efficient data retrieval and storage operations.

Low Power Consumption

Designed with power efficiency in mind, this EEPROM chip minimizes power consumption, making it suitable for battery-powered devices that require extended battery life.

Reliable Data Retention

With excellent endurance and long-term data retention capabilities, the AT28HC256F-90JU ensures that stored data remains intact over an extended period.

Advantages and Disadvantages

Advantages

• High-speed operation enables quick data access.
• Low power consumption prolongs battery life.
• Large storage capacity accommodates ample data.
• Reliable data retention ensures data integrity.

Disadvantages

• Limited write endurance compared to some other non-volatile memory technologies.
• Relatively higher cost per bit compared to certain alternative memory solutions.

Working Principles

The AT28HC256F-90JU utilizes electrically erasable programmable read-only memory technology. It stores data by trapping electrical charges within its memory cells. These charges can be selectively erased and reprogrammed using specific voltage levels applied to the chip's control inputs.

Detailed Application Field Plans

The AT28HC256F-90JU finds applications in various fields, including but not limited to:

1. Microcontrollers: Used for storing firmware, configuration data, and calibration parameters.
2. Computers: Employed in BIOS (Basic Input/Output System) chips for storing system initialization code.
3. Consumer Electronics: Utilized in devices such as smart TVs, set-top boxes, and gaming consoles for data storage purposes.

Detailed and Complete Alternative Models

• AT28HC256F-90JU is part of the AT28HC256 family from Microchip Technology Inc., which includes various speed grades and package options.
• Alternative EEPROM models from other manufacturers include the 24LC256 from Microchip, the M24C256 from STMicroelectronics, and the CAT28C256 from ON Semiconductor.

(Note: The list of alternative models provided here is not exhaustive.)

In conclusion, the AT28HC256F-90JU is a high-speed, low-power EEPROM chip that offers reliable data storage solutions for a wide range of electronic devices. With its large storage capacity and excellent endurance, it provides efficient and secure data retention. While it may have some limitations in terms of write endurance and cost per bit,