AT45DB021D-SH-B

Product Overview

Category

AT45DB021D-SH-B belongs to the category of Serial DataFlash® Memory.

Use

It is primarily used for storing and retrieving data in various electronic devices.

Characteristics

• Serial interface
• Non-volatile memory
• High-speed operation
• Low power consumption

Package

The AT45DB021D-SH-B comes in a small form factor package, making it suitable for space-constrained applications.

Essence

The essence of this product lies in its ability to provide reliable and efficient data storage solutions for electronic devices.

Packaging/Quantity

The AT45DB021D-SH-B 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: 2.7V to 3.6V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: Up to 20 years
• Endurance: 100,000 write cycles

Detailed Pin Configuration

The AT45DB021D-SH-B has a total of 8 pins, each serving a specific function:

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

Functional Features

• Page Program Operation: Allows individual bytes or full pages to be programmed
• Sector Erase Operation: Erases a specified sector of memory
• Block Erase Operation: Erases a specified block of memory
• Continuous Read Mode: Enables sequential reading of data
• Deep Power-down Mode: Reduces power consumption when the device is not in use

Advantages and Disadvantages

Advantages

• High-speed operation for efficient data transfer
• Low power consumption for extended battery life
• Compact package size for space-constrained applications
• Wide operating temperature range for versatility

Disadvantages

• Limited memory size compared to larger storage devices
• Relatively lower endurance compared to some other memory technologies

Working Principles

The AT45DB021D-SH-B utilizes a Serial Peripheral Interface (SPI) to communicate with the host device. It stores data in non-volatile memory cells, which retain information even when power is removed. The device can be programmed at the byte or page level and supports various erase operations to clear specific sectors or blocks of memory.

Detailed Application Field Plans

The AT45DB021D-SH-B finds application in various electronic devices, including but not limited to: - Consumer electronics - Industrial automation systems - Automotive electronics - Medical devices - Communication equipment

Detailed and Complete Alternative Models

1. AT45DB011D-SH-B: 1 megabit (128 kilobytes) memory size
2. AT45DB041D-SH-B: 4 megabits (512 kilobytes) memory size
3. AT45DB081D-SH-B: 8 megabits (1 megabyte) memory size
4. AT45DB161D-SH-B: 16 megabits (2 megabytes) memory size

These alternative models offer different memory sizes to cater to varying storage requirements.

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