AT27C256R-90RC

Product Overview

Category

The AT27C256R-90RC belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

It is used for storing and retrieving data in electronic devices, such as microcontrollers, computers, and consumer electronics.

Characteristics

• Non-volatile memory
• Electrically erasable and reprogrammable
• High reliability and long-term data retention
• Low power consumption

Package

The AT27C256R-90RC is typically available in a dual in-line package (DIP) or surface-mount device (SMD) package.

Essence

The essence of the AT27C256R-90RC lies in its ability to store and retain data without the need for continuous power supply.

Packaging/Quantity

It is commonly packaged in tubes or trays and is available in various quantities depending on the manufacturer's specifications.

Specifications

• Capacity: 256 kilobits (32 kilobytes)
• Access Time: 90 nanoseconds
• Operating Voltage: 5 volts
• Operating Temperature: -40°C to +125°C
• Endurance: 10,000 erase/write cycles

Detailed Pin Configuration

The AT27C256R-90RC typically has 28 pins arranged in a specific configuration to facilitate its integration into electronic circuits. The pinout includes address pins, data input/output pins, control pins, and power supply pins.

Functional Features

• Byte-wide access for easy interfacing with microcontrollers and other devices
• On-chip address and data latches for simplified system design
• Fast programming and erasing operations
• Built-in protection against accidental data modification

Advantages and Disadvantages

Advantages

• Non-volatile storage
• High reliability and endurance
• Low power consumption
• Easy integration into electronic systems

Disadvantages

• Limited erase/write cycles
• Relatively slower access time compared to other memory technologies

Working Principles

The AT27C256R-90RC utilizes a combination of floating gate transistors and control circuitry to store and retrieve data. When data is written, an electrical charge is applied to the floating gate, altering its conductivity and effectively storing the information. Erasing the data involves removing the electrical charge from the floating gate, resetting it to its original state.

Detailed Application Field Plans

The AT27C256R-90RC is widely used in applications requiring non-volatile memory, such as: - Embedded systems - Automotive electronics - Industrial control systems - Medical devices - Communication equipment

Detailed and Complete Alternative Models

• AT28C256: Similar capacity and functionality, manufactured by Atmel Corporation
• M27C256B: Equivalent EEPROM chip produced by STMicroelectronics
• W27C256: Alternative non-volatile memory device offered by Winbond Electronics

In conclusion, the AT27C256R-90RC is a versatile and reliable EEPROM chip suitable for a wide range of electronic applications, offering non-volatile data storage, high endurance, and low power consumption.

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