AT45DB021B-RI

Product Overview

Category

AT45DB021B-RI belongs to the category of flash memory devices.

Use

It is primarily used for data storage and retrieval in various electronic devices.

Characteristics

• Non-volatile memory
• High-speed data transfer
• Low power consumption
• Small form factor
• Reliable and durable

Package

AT45DB021B-RI is available in a compact package, suitable for integration into different electronic systems.

Essence

The essence of AT45DB021B-RI lies in its ability to provide reliable and efficient data storage solutions for electronic devices.

Packaging/Quantity

AT45DB021B-RI is typically packaged individually or in reels, depending on the manufacturer's specifications. The quantity per package may vary.

Specifications

• Memory 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
• Endurance: 10,000 write cycles

Detailed Pin Configuration

The AT45DB021B-RI has a total of 8 pins, each serving a specific function:

1. Chip Select (/CS): Enables communication with the device.
2. Serial Clock (SCK): Provides the clock signal for data transfer.
3. Serial Data Input (SI): Transfers data from the microcontroller to the device.
4. Serial Data Output (SO): Transfers data from the device to the microcontroller.
5. Write Protect (/WP): Protects the memory from accidental writes.
6. Reset (/RESET): Resets the device to its default state.
7. VCC: Power supply input.
8. Ground (GND): Common ground reference.

Functional Features

• Page program operation for efficient data storage.
• Continuous read mode for fast data retrieval.
• Sector erase capability for flexible memory management.
• Software and hardware protection mechanisms to prevent unauthorized access.
• Deep power-down mode for ultra-low power consumption during idle periods.

Advantages and Disadvantages

Advantages

• High-speed data transfer allows for quick access to stored information.
• Low power consumption prolongs battery life in portable devices.
• Compact form factor enables integration into space-constrained designs.
• Reliable and durable, ensuring data integrity over extended periods.

Disadvantages

• Limited memory capacity compared to higher-end flash memory devices.
• Endurance limitations may restrict the number of write cycles.

Working Principles

AT45DB021B-RI utilizes a combination of floating-gate transistors and semiconductor technology to store and retrieve data. It employs a serial interface for communication with the microcontroller, enabling efficient data transfer.

Detailed Application Field Plans

AT45DB021B-RI finds applications in various electronic devices, including but not limited to: - Consumer electronics (e.g., smartphones, tablets) - Automotive systems (e.g., infotainment systems, navigation units) - Industrial control systems - Medical devices - Internet of Things (IoT) devices

Detailed and Complete Alternative Models

1. AT45DB041B-RI: 4 megabits (512 kilobytes) memory capacity.
2. AT45DB081B-RI: 8 megabits (1 megabyte) memory capacity.
3. AT45DB161B-RI: 16 megabits (2 megabytes) memory capacity.
4. AT45DB321B-RI: 32 megabits (4 megabytes) memory capacity.
5. AT45DB641B-RI: 64 megabits (8 megabytes) memory capacity.

These alternative models offer increased memory capacity while maintaining similar characteristics and functionality to AT45DB021B-RI.

In conclusion, AT45DB021B-RI is a flash memory device that provides reliable and efficient data storage solutions for various electronic devices. With its compact size, high-speed data transfer, and low power consumption, it is well-suited for a wide range of applications. While it may have limitations in terms of memory capacity and endurance, there are alternative models available with higher capacities.