AT28HC256E-70JU

Product Overview

Category

AT28HC256E-70JU belongs to the category of high-speed, low-power Electrically Erasable Programmable Read-Only Memory (EEPROM) chips.

Use

This product is commonly used in various electronic devices for non-volatile data storage. It allows users to store and retrieve data even when power is turned off.

Characteristics

• High-speed operation: The AT28HC256E-70JU offers fast read and write speeds, making it suitable for applications that require quick access to stored data.
• Low-power consumption: This EEPROM chip is designed to minimize power usage, making it ideal for battery-powered devices.
• Large storage capacity: With a capacity of 256 kilobits (32 kilobytes), this chip can store a significant amount of data.
• Reliable data retention: The AT28HC256E-70JU ensures data integrity with a guaranteed minimum data retention period of 10 years.

Package

The AT28HC256E-70JU comes in a standard 32-pin PLCC (Plastic Leaded Chip Carrier) package. This package provides mechanical protection and facilitates easy integration into circuit boards.

Essence

The essence of the AT28HC256E-70JU lies in its ability to provide reliable, non-volatile data storage in a compact and low-power package.

Packaging/Quantity

This product is typically packaged in reels or tubes, containing a specific quantity of chips per package. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Operating voltage: 2.7V - 5.5V
• Access time: 70 nanoseconds
• Organization: 32K x 8 bits
• Interface: Serial Peripheral Interface (SPI)
• Write endurance: 100,000 cycles
• Data retention: 10 years

Detailed Pin Configuration

The AT28HC256E-70JU has a total of 32 pins, each serving a specific purpose. 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 AT28HC256E-70JU offers fast read and write speeds, allowing for efficient data access and manipulation. This feature is particularly useful in applications that require real-time data processing.

Low-Power Consumption

Designed with power efficiency in mind, this EEPROM chip minimizes energy consumption, making it suitable for battery-powered devices or applications where power conservation is crucial.

Reliable Data Retention

With a guaranteed minimum data retention period of 10 years, the AT28HC256E-70JU ensures that stored data remains intact over an extended period. This reliability is essential for critical applications where data integrity is paramount.

Advantages and Disadvantages

Advantages

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

Disadvantages

• Limited write endurance of 100,000 cycles may be a constraint in certain high-write-frequency applications.
• The PLCC package may require additional space on the circuit board compared to smaller package options.

Working Principles

The AT28HC256E-70JU utilizes EEPROM technology to store and retrieve data. It employs a combination of electrical signals and memory cells to achieve non-volatile data storage. When powered on, the chip allows for reading and writing of data through the specified interface.

Detailed Application Field Plans

The AT28HC256E-70JU finds applications in various fields, including but not limited to:

1. Consumer Electronics: Used in devices such as smartphones, tablets, and digital cameras for data storage purposes.
2. Automotive: Employed in automotive systems for storing critical data like configuration settings and error logs.
3. Industrial Control Systems: Utilized in industrial automation and control systems to store program code, calibration data, and system parameters.
4. Medical Devices: Integrated into medical equipment for storing patient data, device configurations, and firmware updates.

Detailed and Complete Alternative Models

1. AT28C256-15PU: A similar EEPROM chip with a capacity of 256 kilobits and an access time of 150 nanoseconds.
2. AT24C256C-SSHL-T: Another alternative offering 256 kilobits of storage capacity, featuring an I2C interface and an operating voltage range of 1.7V - 5.5V.

These alternative