AT45DB021-RC

Product Overview

Category

AT45DB021-RC belongs to the category of flash memory integrated circuits.

Use

This product is primarily used for data storage in various electronic devices such as digital cameras, mobile phones, and portable media players.

Characteristics

• Non-volatile memory: The stored data is retained even when power is removed.
• High storage capacity: The AT45DB021-RC has a storage capacity of 2 megabits (256 kilobytes).
• Fast data transfer rate: It supports high-speed data transfer, allowing for efficient read and write operations.
• Low power consumption: The device is designed to consume minimal power during operation.
• Durable and reliable: The flash memory technology used in this product ensures long-term data retention and resistance to physical damage.

Package

The AT45DB021-RC is available in a compact 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of AT45DB021-RC lies in its ability to provide reliable and high-capacity data storage in a compact form factor.

Packaging/Quantity

This product is typically packaged in reels containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Memory capacity: 2 megabits (256 kilobytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating voltage: 2.7V to 3.6V
• Data transfer rate: Up to 66 megabits per second (Mbps)
• Erase/Program cycles: 10,000 minimum
• Data retention: Up to 20 years

Detailed Pin Configuration

1. Chip Select (/CS): This pin is used to enable or disable the device for communication with the host system.
2. Serial Clock (SCK): The SCK pin provides the clock signal for synchronous data transfer.
3. Serial Data Input (SI): This pin is used to input data from the host system to the device during write operations.
4. Serial Data Output (SO): The SO pin outputs data from the device to the host system during read operations.
5. Write Protect (/WP): When this pin is held low, it protects the memory array from accidental write operations.
6. Reset (/RESET): This pin resets the device to its default state when activated.
7. VCC: The power supply pin for the device (2.7V to 3.6V).
8. Ground (GND): The ground reference pin.

Functional Features

• Page-level erase and program operations: Allows for efficient modification of specific data pages without affecting others.
• Continuous read mode: Enables sequential reading of multiple data pages without the need for repeated commands.
• Software and hardware protection mechanisms: Provides security features to prevent unauthorized access or modification of stored data.
• Automatic sleep mode: Reduces power consumption when the device is idle for a certain period.

Advantages and Disadvantages

Advantages

• High storage capacity for a compact form factor.
• Fast data transfer rate for efficient read and write operations.
• Durable and reliable flash memory technology.
• Low power consumption for extended battery life.
• Flexible page-level erase and program operations.

Disadvantages

• Limited erase/program cycles compared to some other flash memory technologies.
• Relatively higher cost per megabit compared to larger capacity flash memory devices.

Working Principles

The AT45DB021-RC utilizes the Serial Peripheral Interface (SPI) to communicate with the host system. It stores data in a non-volatile flash memory array, which retains information even when power is removed. The device supports various operations such as reading, writing, erasing, and programming of data at the page level. These operations are controlled through specific commands sent via the SPI interface.

Detailed Application Field Plans

The AT45DB021-RC is widely used in various electronic devices that require reliable and high-capacity data storage. Some of the common application fields include:

1. Digital cameras: The flash memory provides a convenient and efficient way to store captured images and videos.
2. Mobile phones: Used for storing user data, such as contacts, messages, and multimedia files.
3. Portable media players: Enables storage of music, videos, and other media content.
4. IoT devices: Provides non-volatile memory for storing sensor data and device configurations.
5. Automotive electronics: Used in infotainment systems, navigation units, and engine control modules for data storage.

Detailed and Complete Alternative Models

1. AT45DB041E-SSHN-T: 4 megabit (512 kilobytes) flash memory with similar features and package.
2. AT45DB081D-SSHN-B: 8 megabit (1 megabyte) flash memory with extended temperature range.
3. AT45DB161E-SHN-T: 16 megabit (2 megabytes)