AT45D021-RC

Product Overview

Category

AT45D021-RC belongs to the category of non-volatile memory devices.

Use

This product is primarily used for data storage in various electronic devices such as microcontrollers, embedded systems, and consumer electronics.

Characteristics

• Non-volatile: The AT45D021-RC retains stored data even when power is removed.
• High capacity: This device offers a storage capacity of 2 megabits (256 kilobytes).
• Serial interface: It utilizes a serial peripheral interface (SPI) for communication with the host device.
• Low power consumption: The AT45D021-RC is designed to operate efficiently with minimal power requirements.
• Fast access time: It provides quick access to stored data, ensuring efficient performance.

Package

The AT45D021-RC is available in a compact 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of this product lies in its ability to provide reliable and non-volatile storage for electronic devices, ensuring data integrity and persistence.

Packaging/Quantity

The AT45D021-RC is typically packaged in reels containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Storage Capacity: 2 Megabits (256 Kilobytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating Voltage: 2.7V - 3.6V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: Up to 20 years
• Programming Time: 5ms per byte (typical)

Detailed Pin Configuration

1. Chip Select (/CS): Used to enable or disable the device for communication.
2. Serial Clock (SCK): Provides the clock signal for data transfer.
3. Serial Data Input (SI): Transfers data from the host device to the memory.
4. Serial Data Output (SO): Transfers data from the memory to the host device.
5. Write Protect (/WP): Used to protect the memory from accidental writes.
6. Ground (GND): Common ground reference.
7. Power Supply (VCC): Positive power supply voltage.
8. Hold (/HOLD): Pauses ongoing operations without resetting the device.

Functional Features

• High-speed data transfer: The AT45D021-RC supports fast data transfer rates, allowing for efficient read and write operations.
• Sector-based architecture: It organizes the memory into sectors, enabling selective erasure and programming of specific sections.
• Hardware and software protection: This device offers various protection mechanisms to prevent unauthorized access or modification of stored data.
• Low power consumption: The AT45D021-RC is designed to minimize power consumption, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data persistence.
• High storage capacity for a wide range of applications.
• Compact package size allows for easy integration into electronic devices.
• Fast access time enhances overall system performance.
• Efficient power management prolongs battery life in portable devices.

Disadvantages

• Limited storage capacity compared to other non-volatile memory options.
• Relatively slower programming time compared to some alternatives.
• Vulnerable to physical damage or data corruption if mishandled.

Working Principles

The AT45D021-RC utilizes flash memory technology to store and retrieve data. It employs a combination of floating-gate transistors and charge storage to represent binary information. When data is written, charges are trapped within the floating gates, altering their electrical characteristics. These charges can be read back later to retrieve the stored information.

Detailed Application Field Plans

The AT45D021-RC finds applications in various fields, including: - Microcontrollers and embedded systems - Consumer electronics (e.g., digital cameras, portable media players) - Automotive electronics - Industrial automation - Medical devices

Detailed and Complete Alternative Models

1. AT45DB021D-RC: Similar to the AT45D021-RC, this model offers additional features such as dual-interface capability and extra security options.
2. AT25SF041-RC: This alternative provides a smaller storage capacity but offers faster programming times and lower power consumption.
3. AT24C256-RC: Although not a flash memory device, this alternative is an EEPROM (Electrically Erasable Programmable Read-Only Memory) with a larger storage capacity.

Please note that the above alternatives may have different pin configurations and specifications, so careful consideration should be given when selecting the appropriate model for a specific application.

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