AT45DB321B-RI

Product Overview

Category

AT45DB321B-RI belongs to the category of flash memory devices.

Use

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

Characteristics

• Non-volatile memory: The AT45DB321B-RI retains stored data even when power is removed.
• High capacity: This device has a storage capacity of 32 megabits (4 megabytes).
• Serial interface: It utilizes a serial peripheral interface (SPI) for communication with other devices.
• Low power consumption: The AT45DB321B-RI operates at low power levels, making it suitable for battery-powered applications.

Package

The AT45DB321B-RI is available in a small form factor package, typically a 8-pin SOIC (Small Outline Integrated Circuit).

Essence

The essence of AT45DB321B-RI lies in its ability to provide reliable and high-capacity data storage in a compact package.

Packaging/Quantity

This product is commonly packaged in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Storage Capacity: 32 megabits (4 megabytes)
• 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

Detailed Pin Configuration

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

Functional Features

• Page Program Operation: Allows data to be written to the memory in page-sized increments.
• Sector Erase Operation: Enables erasing of large blocks of data for efficient memory management.
• Continuous Read Mode: Facilitates sequential reading of data from the memory without the need for repeated commands.
• Deep Power-down Mode: Reduces power consumption when the device is not actively used.

Advantages and Disadvantages

Advantages

• High storage capacity
• Compact form factor
• Low power consumption
• Reliable data retention
• Ease of integration with SPI interface

Disadvantages

• Limited endurance compared to some other flash memory technologies
• Relatively higher cost per megabyte compared to larger capacity devices

Working Principles

The AT45DB321B-RI utilizes a combination of floating gate transistors and control circuitry to store and retrieve data. When data is written, charges are trapped in the floating gate, altering the transistor's conductive properties. These charges can be erased by applying a high voltage, allowing new data to be written. The SPI interface facilitates communication between the device and the host system, enabling seamless data transfer.

Detailed Application Field Plans

The AT45DB321B-RI finds applications in various electronic devices, including but not limited to: - Consumer electronics (e.g., digital cameras, portable media players) - Automotive systems (e.g., infotainment systems, navigation units) - Industrial equipment (e.g., data loggers, control systems) - Medical devices (e.g., patient monitoring systems, diagnostic equipment)

Detailed and Complete Alternative Models

1. AT45DB161E-SSHN-T: 16 megabit (2 megabyte) flash memory with similar characteristics and package.
2. AT45DB641E-SHN-B: 64 megabit (8 megabyte) flash memory with increased storage capacity.
3. AT45DB081D-SSHN-T: 8 megabit (1 megabyte) flash memory with lower storage capacity.

These alternative models offer different storage capacities and may have slight variations in specifications, but they serve similar purposes and can be used as alternatives to the AT45DB321B-RI based on specific requirements.

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