AT45DB321-TI

Product Overview

• Category: Integrated Circuit
• Use: Data Storage
• Characteristics: Non-volatile, Serial Flash Memory
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: High-capacity, low-power, and high-speed data storage solution
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Memory Size: 32 Megabits (4 Megabytes)
• Interface: SPI (Serial Peripheral Interface)
• Operating Voltage: 2.7V to 3.6V
• Operating Temperature Range: -40°C to +85°C
• Write/Erase Endurance: 10,000 cycles
• Data Retention: 20 years

Pin Configuration

The AT45DB321-TI has the following pin configuration:

1. VCC - Power Supply
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

• Dual-interface: Supports both serial peripheral interface and standard parallel interface modes.
• Continuous Read Mode: Allows for sequential reading of multiple pages without the need for readdressing.
• Page Erase: Enables erasing of individual memory pages, enhancing flexibility.
• Deep Power-down Mode: Reduces power consumption during idle periods.
• Sector Protection: Provides hardware protection for critical data sectors.

Advantages and Disadvantages

Advantages: - High storage capacity - Low power consumption - Fast data transfer rate - Flexible erase and write operations - Hardware sector protection

Disadvantages: - Limited endurance cycles (10,000 cycles) - Requires external components for operation - Relatively small package size

Working Principles

The AT45DB321-TI is based on the floating-gate technology, which allows for non-volatile data storage. It utilizes a serial peripheral interface (SPI) to communicate with the host microcontroller. The memory cells are organized into sectors and pages, enabling efficient read, write, and erase operations. The device operates within a specified voltage range and can retain data for extended periods.

Detailed Application Field Plans

The AT45DB321-TI finds applications in various fields, including: 1. Consumer Electronics: Used in digital cameras, portable media players, and gaming consoles for data storage. 2. Automotive: Employed in infotainment systems, navigation devices, and engine control units for storing critical information. 3. Industrial Automation: Utilized in programmable logic controllers (PLCs), human-machine interfaces (HMIs), and data loggers for data storage and retrieval. 4. Medical Devices: Integrated into medical equipment such as patient monitors, ultrasound machines, and diagnostic devices for storing patient data.

Alternative Models

1. AT45DB161E-TI: 16 Megabit (2 Megabyte) capacity, similar features and package.
2. AT45DB641E-TI: 64 Megabit (8 Megabyte) capacity, higher storage capacity than AT45DB321-TI.
3. AT25SF041-SSHD-T: 4 Megabit (512 Kilobyte) capacity, smaller storage capacity but lower cost option.

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