AT28HC256F-90SA

Product Overview

Category

AT28HC256F-90SA 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

AT28HC256F-90SA is available in a small outline package (SOIC) which ensures easy integration into circuit boards.

Essence

The essence of AT28HC256F-90SA lies in its ability to provide reliable and high-speed non-volatile memory storage for electronic devices.

Packaging/Quantity

This product is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of AT28HC256F-90SA chips. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Part Number: AT28HC256F-90SA
• Memory Type: EEPROM
• Memory Size: 256 kilobits (32 kilobytes)
• Operating Voltage: 2.7V - 5.5V
• Access Time: 90 nanoseconds
• Interface: Serial Peripheral Interface (SPI)
• Data Retention: 10 years
• Endurance: 100,000 write cycles

Detailed Pin Configuration

The AT28HC256F-90SA chip has a total of 8 pins, each serving a specific purpose:

1. Chip Select (/CS): Enables or disables the chip for communication.
2. Serial Clock (SCK): Provides the clock signal for data transfer.
3. Serial Data Input (SI): Receives data from the external device.
4. Serial Data Output (SO): Transmits data to the external device.
5. Write Enable (/WE): Enables or disables write operations.
6. Hold (/HOLD): Pauses ongoing operations without losing data.
7. VCC: Power supply voltage.
8. Ground (GND): Common ground reference.

Functional Features

• High-speed operation allows for quick data access and transfer.
• Low power consumption ensures efficient use of energy.
• Non-volatile memory retains data even when power is disconnected.
• Large storage capacity provides ample space for data storage.
• Easy interface with other electronic components simplifies integration into various systems.

Advantages and Disadvantages

Advantages

• Fast access time enhances overall system performance.
• Low power consumption prolongs battery life in portable devices.
• Non-volatile memory ensures data integrity during power cycles.
• Large storage capacity accommodates a wide range of applications.
• Easy integration simplifies the design process.

Disadvantages

• Limited endurance may restrict certain high-write applications.
• Higher cost compared to other types of memory technologies.
• Relatively larger physical size compared to newer memory technologies.

Working Principles

AT28HC256F-90SA utilizes EEPROM technology, which allows for electrically erasing and reprogramming of data. The chip stores data in a grid of memory cells, with each cell capable of holding one bit of information. When data needs to be written or read, the appropriate signals are sent through the pins, enabling the necessary operations.

Detailed Application Field Plans

AT28HC256F-90SA finds application in various fields, including but not limited to:

1. Microcontrollers: Used for storing program code and configuration data.
2. Computers: Employed in BIOS chips and firmware storage.
3. Consumer Electronics: Utilized in devices such as smart TVs, set-top boxes, and gaming consoles for data storage.

Detailed and Complete Alternative Models

1. AT28C256: Similar EEPROM chip with a slower access time of 150 nanoseconds.
2. AT29C256: Flash memory chip with faster erase and write times but requires higher voltage.
3. AT24C256: I2C-compatible EEPROM chip with a different interface and lower operating voltage.

These alternative models provide similar functionality to AT28HC256F-90SA but may have variations in specifications and compatibility.

In conclusion, AT28HC256F-90SA 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 the microcontroller, computer, and consumer electronics fields. Additionally, alternative models provide flexibility and options for specific requirements.