AT45DB021B-CI

Product Overview

Category: Integrated Circuit (IC)

Use: The AT45DB021B-CI is a flash memory IC that is commonly used for data storage and retrieval in various electronic devices. It provides non-volatile storage capabilities, allowing data to be retained even when power is removed.

Characteristics: - High storage capacity - Fast read and write speeds - Low power consumption - Small form factor - Reliable and durable

Package: The AT45DB021B-CI is available in a compact 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence: This flash memory IC is designed to provide reliable and efficient data storage solutions for a wide range of electronic devices.

Packaging/Quantity: The AT45DB021B-CI is typically sold in reels or tubes, with each reel or tube containing a specific quantity of ICs.

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
• Endurance: 10,000 erase/write cycles

Pin Configuration

The AT45DB021B-CI features the following pin configuration:

1. Chip Select (/CS)
2. Output Enable (/OE)
3. Write Protect (/WP)
4. Serial Clock (SCK)
5. Serial Data Input (SI)
6. Serial Data Output (SO)
7. Ground (GND)
8. Power Supply (VCC)

Functional Features

• Page Program Operation: Allows data to be written to the memory in page-sized increments.
• Continuous Read Mode: Enables sequential reading of data from the memory without the need for repeated commands.
• Sector Erase Operation: Allows for the erasure of large blocks of data in a single operation.
• Software Protection: Provides software-based write protection to prevent accidental modification or deletion of stored data.

Advantages and Disadvantages

Advantages: - High storage capacity - Fast read and write speeds - Low power consumption - Compact form factor - Reliable and durable

Disadvantages: - Limited endurance (10,000 erase/write cycles) - Relatively small storage capacity compared to other flash memory options

Working Principles

The AT45DB021B-CI utilizes a combination of floating gate transistors and control circuitry to store and retrieve data. When data is written to the memory, charges are trapped in the floating gate, altering the transistor's behavior and storing the information. During read operations, the trapped charges are detected, allowing the retrieval of the stored data.

Detailed Application Field Plans

The AT45DB021B-CI can be used in various applications, including but not limited to: 1. Consumer electronics (e.g., digital cameras, portable media players) 2. Automotive systems (e.g., infotainment systems, instrument clusters) 3. Industrial equipment (e.g., data loggers, control systems) 4. Communication devices (e.g., routers, modems)

Alternative Models

1. AT45DB041B-CI: Offers double the storage capacity (4 megabits) compared to the AT45DB021B-CI.
2. AT45DB081B-CI: Provides eight times the storage capacity (8 megabits) compared to the AT45DB021B-CI.
3. AT45DB161B-CI: Offers sixteen times the storage capacity (16 megabits) compared to the AT45DB021B-CI.

These alternative models provide increased storage capacity options for applications that require more memory.

In conclusion, the AT45DB021B-CI is a versatile flash memory IC that offers high storage capacity, fast read and write speeds, and low power consumption. Its compact form factor and reliability make it suitable for various electronic devices across different industries. However, its limited endurance and relatively small storage capacity compared to other options should be considered when selecting the appropriate memory solution.