AT45DB021B-SC

Product Overview

Category

AT45DB021B-SC belongs to the category of Serial DataFlash® Memory.

Use

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

Characteristics

• Serial interface for easy integration with microcontrollers.
• High-speed data transfer capability.
• Low power consumption.
• Wide operating voltage range.
• Durable and reliable performance.

Package

AT45DB021B-SC is available in a small surface mount package, making it suitable for compact electronic devices.

Essence

The essence of AT45DB021B-SC lies in its ability to provide non-volatile memory storage with fast access times and low power consumption.

Packaging/Quantity

This product is typically packaged in reels or trays, with a quantity of 2500 units per reel/tray.

Specifications

• Memory Size: 2 megabits (256 kilobytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating Voltage Range: 2.7V to 3.6V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: More than 20 years
• Endurance: 100,000 write cycles

Detailed Pin Configuration

1. VCC: Power supply voltage
2. GND: Ground
3. SI: Serial input
4. SO: Serial output
5. WP: Write protect
6. HOLD: Hold input
7. SCK: Serial clock
8. CS: Chip select

Functional Features

• Page Program Operation: Allows individual bytes or full pages to be programmed.
• Continuous Read Mode: Enables sequential reading of multiple pages without the need for readdressing.
• Sector Erase Capability: Provides the ability to erase large blocks of memory.
• Deep Power-down Mode: Reduces power consumption to a minimum when the device is not in use.
• Software Protection: Allows for software-based write protection of memory sectors.

Advantages and Disadvantages

Advantages

• Compact size and surface mount package for easy integration.
• High-speed data transfer for efficient operation.
• Low power consumption, ideal for battery-powered devices.
• Wide operating voltage range for compatibility with various systems.
• Durable and reliable performance, ensuring data integrity.

Disadvantages

• Limited storage capacity compared to higher-capacity memory options.
• Relatively higher cost per megabit compared to larger memory chips.

Working Principles

AT45DB021B-SC utilizes flash memory technology to store and retrieve data. It employs a serial interface, allowing for seamless integration with microcontrollers. The device operates by sending commands and data through the SPI interface, enabling read, write, erase, and other operations on the memory cells.

Detailed Application Field Plans

AT45DB021B-SC finds applications in various electronic devices, 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 control systems (e.g., PLCs, data loggers) 4. Medical devices (e.g., patient monitoring systems, diagnostic equipment) 5. Communication devices (e.g., routers, modems)

Detailed and Complete Alternative Models

1. AT45DB041E-SSHN-T: 4 megabit Serial DataFlash® Memory with similar features and package.
2. AT45DB081D-SSHN-B: 8 megabit Serial DataFlash® Memory with extended temperature range.
3. AT45DB161E-SHN-T: 16 megabit Serial DataFlash® Memory with higher storage capacity.

These alternative models offer varying capacities and additional features to suit different application requirements.

In conclusion, AT45DB021B-SC is a compact and versatile Serial DataFlash® Memory chip that provides reliable data storage and retrieval capabilities. With its high-speed operation, low power consumption, and wide range of applications, it serves as an essential component in numerous electronic devices.