AT28HC256F-90PU

Product Overview

Category

AT28HC256F-90PU 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 for easy and efficient data retrieval even when power is turned off.

Characteristics

• High-speed operation
• Low power consumption
• Non-volatile memory
• Reliable data retention
• Easy to integrate into electronic systems

Package

AT28HC256F-90PU is available in a standard 28-pin plastic dual in-line package (PDIP). This package provides mechanical protection and facilitates easy installation on printed circuit boards (PCBs).

Essence

The essence of AT28HC256F-90PU lies in its ability to store and retrieve data reliably, making it an essential component in many electronic devices.

Packaging/Quantity

AT28HC256F-90PU 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.

Specifications

• Operating Voltage: 2.7V - 5.5V
• Capacity: 256 kilobits (32 kilobytes)
• Access Time: 90 nanoseconds
• Interface: Parallel
• Data Retention: 10 years
• Endurance: 100,000 write cycles

Detailed Pin Configuration

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 pin configuration may vary depending on the manufacturer. Please refer to the datasheet for the specific pinout.

Functional Features

• High-speed operation allows for quick data access.
• Low power consumption ensures efficient use of energy.
• Non-volatile memory retains data even when power is turned off.
• Reliable data retention guarantees the integrity of stored information.
• Easy integration into electronic systems simplifies the design process.

Advantages and Disadvantages

Advantages

• Fast access time enables efficient data retrieval.
• Low power consumption prolongs battery life in portable devices.
• Non-volatile memory ensures data persistence.
• Reliable data retention prevents data loss.
• Easy integration simplifies system design and development.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Higher cost per bit compared to some alternative memory solutions.
• Limited endurance may restrict certain applications with frequent write operations.

Working Principles

AT28HC256F-90PU utilizes EEPROM technology, which allows for electrically erasing and reprogramming of data. It stores information by trapping electrical charges within a floating gate structure. The presence or absence of these charges determines the stored data.

During read operations, the chip activates the necessary circuitry to retrieve the requested data from the memory cells. Write operations involve applying specific voltage levels to the appropriate pins, enabling the modification of stored data.

Detailed Application Field Plans

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

1. Consumer Electronics: Used in digital cameras, smartphones, and portable media players for data storage.
2. Automotive: Employed in car audio systems, navigation systems, and engine control units for storing critical information.
3. Industrial Automation: Utilized in programmable logic controllers (PLCs) and industrial control systems for data storage and retrieval.
4. Medical Devices: Integrated into medical equipment for storing patient data and device configurations.
5. Communication Systems: Used in networking devices, routers, and switches for storing firmware and configuration data.

Detailed and Complete Alternative Models

1. AT28C256-15PU: Similar to AT28HC256F-90PU but with a slower access time of 150 nanoseconds.
2. AT28HC256E-90PU: Enhanced version with extended temperature range (-40°C to +85°C) compared to the standard operating temperature range of AT28HC256F-90PU.

Note: The availability of alternative models may vary depending on the manufacturer. Please refer to the datasheets for detailed specifications.

In conclusion, AT28HC256F-90PU is a high-speed, low-power EEPROM chip that offers reliable non-volatile data storage. Its characteristics, functional features, and wide range of applications make it an essential component in various electronic devices.