AT28HC256F-90TU

Product Overview

Category

AT28HC256F-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 storage of data 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-90TU is available in a small form factor package, making it suitable for space-constrained applications. The specific package type may vary depending on the manufacturer.

Essence

The essence of AT28HC256F-90TU lies in its ability to provide reliable and non-volatile storage of data, ensuring that critical information is retained even when power is disconnected.

Packaging/Quantity

AT28HC256F-90TU is typically sold in reels or trays, containing a specific quantity of chips per package. The exact packaging and quantity may vary based on the manufacturer's specifications.

Specifications

• Operating Voltage: 2.7V - 5.5V
• Storage 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 AT28HC256F-90TU chip has a standard pin configuration consisting of the following pins:

1. Chip Select (/CS)
2. Serial Clock (SCK)
3. Serial Data Input (SI)
4. Serial Data Output (SO)
5. Write Enable (/WE)
6. Output Enable (/OE)
7. VCC (Power Supply)
8. Ground (GND)

Functional Features

• High-speed data transfer using the Serial Peripheral Interface (SPI) protocol.
• Flexible write and erase operations, allowing for easy modification of stored data.
• Low power consumption during both active and standby modes.
• Hardware and software protection mechanisms to prevent unauthorized access or accidental modifications.

Advantages and Disadvantages

Advantages

• Fast access time enables quick retrieval of stored data.
• Non-volatile memory ensures data retention even in the absence of power.
• Low power consumption prolongs battery life in portable devices.
• Easy integration with other electronic components due to standard interface protocols.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Relatively higher cost per unit compared to alternative memory solutions.
• Limited endurance may restrict the number of write cycles.

Working Principles

AT28HC256F-90TU utilizes EEPROM technology, which allows for electrically erasing and reprogramming of data. The chip stores information in a grid of memory cells, each capable of holding a single bit. When data needs to be written or modified, the appropriate voltage levels are applied to specific memory cells, altering their state. During read operations, the stored data is retrieved by sensing the voltage levels within the memory cells.

Detailed Application Field Plans

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

1. Microcontrollers: Used for storing firmware, configuration settings, and calibration data.
2. Computers: Employed in BIOS chips, expansion cards, and embedded systems.
3. Consumer Electronics: Utilized in smart TVs, set-top boxes, and gaming consoles for data storage and firmware updates.
4. Automotive: Integrated into electronic control units (ECUs) for storing critical vehicle parameters and sensor data.

Detailed and Complete Alternative Models

1. AT28C256: Similar to AT28HC256F-90TU, but with a slower access time of 150 nanoseconds.
2. AT24C256: I2C-compatible EEPROM chip with the same storage capacity and similar characteristics.

These alternative models provide options for different performance requirements or compatibility with specific interface protocols.

In conclusion, AT28HC256F-90TU is a high-speed, low-power EEPROM chip that offers reliable non-volatile data storage. Its compact package, flexible functionality, and wide range of applications make it a popular choice in the electronics industry.

Word Count: 570