AT28HC256F-90SI

Product Overview

Category

AT28HC256F-90SI 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-90SI is available in a Small-Outline Integrated Circuit (SOIC) package. This package provides a compact form factor and allows for easy integration into electronic circuits.

Essence

The essence of AT28HC256F-90SI lies in its ability to store and retrieve data reliably, while offering high-speed operation and low power consumption.

Packaging/Quantity

AT28HC256F-90SI 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 manufacturer and customer requirements.

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

AT28HC256F-90SI has a total of 8 pins, each serving a specific purpose:

1. Chip Select (/CS): Enables communication with the chip when pulled low.
2. Serial Clock (SCK): Provides the clock signal for data transfer.
3. Serial Data Input (SI): Transfers data from the microcontroller to the chip.
4. Serial Data Output (SO): Transfers data from the chip to the microcontroller.
5. Write Enable (/WE): Enables write operations when pulled low.
6. Hold (/HOLD): Pauses ongoing operations when pulled low.
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 resources.
• Non-volatile memory retains data even when power is disconnected.
• Large storage capacity accommodates a significant amount of data.
• Reliable data retention ensures long-term integrity of stored information.
• Easy interface with other electronic components simplifies integration into various systems.

Advantages and Disadvantages

Advantages

• Fast access time improves overall system performance.
• Low power consumption extends battery life in portable devices.
• Non-volatile memory eliminates the need for constant power supply during data storage.
• Large storage capacity provides ample space for storing critical information.
• Reliable data retention ensures data integrity over extended periods.
• Easy integration with other components simplifies circuit design and development.

Disadvantages

• Limited endurance may restrict the number of write cycles.
• Higher cost compared to other non-volatile memory technologies.
• Relatively larger physical size compared to some alternative models.

Working Principles

AT28HC256F-90SI utilizes EEPROM technology, which allows for electrically erasing and reprogramming data. The chip consists of an array of memory cells that can be individually addressed and modified using electrical signals. When data is written, it is stored in the memory cells by altering their electrical charge. During read operations, the stored data is retrieved by sensing the electrical state of the memory cells.

Detailed Application Field Plans

AT28HC256F-90SI finds applications in various fields, including:

1. Microcontrollers: Used for storing firmware, configuration data, and calibration parameters.
2. Computers: Employed in BIOS chips and other non-volatile memory requirements.
3. Consumer Electronics: Utilized in devices such as smart TVs, set-top boxes, and gaming consoles for data storage.

Detailed and Complete Alternative Models

Some alternative models to AT28HC256F-90SI include:

1. AT28C256: Similar capacity and functionality, but with slower access time.
2. AT25SF041: Smaller capacity, but with faster access time and lower power consumption.
3. AT24C512: Higher capacity, but with slower access time and larger physical size.

These alternative models offer different trade-offs in terms of capacity, speed, power consumption, and physical size, allowing users to choose the most suitable option for their specific requirements.

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