AT45DB321D-SU

Product Overview

• Category: Integrated Circuit
• Use: Data Storage
• Characteristics: High capacity, Serial Interface, Low Power Consumption
• Package: SOP (Small Outline Package)
• Essence: Non-volatile Flash Memory
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Memory Size: 32 Megabits (4 Megabytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating Voltage: 2.7V to 3.6V
• Operating Temperature: -40°C to +85°C
• Read/Write Speed: Up to 66 MHz
• Data Retention: More than 20 years
• Erase/Program Cycles: 10,000 minimum

Pin Configuration

The AT45DB321D-SU has a total of 8 pins:

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-Port SRAM-like Interface
• Continuous Read Capability
• Sector Erase and Program Operations
• Page Erase and Program Operations
• Software and Hardware Protection Features
• Deep Power-down Mode for Low Power Consumption

Advantages

• High storage capacity for data-intensive applications
• Serial interface allows for easy integration with microcontrollers
• Low power consumption extends battery life in portable devices
• Reliable and durable non-volatile memory technology
• Flexible erase and program operations for efficient data management

Disadvantages

• Limited erase/program cycles compared to other memory technologies
• Relatively higher cost per megabyte compared to traditional storage media
• Requires additional circuitry for proper interfacing with microcontrollers

Working Principles

The AT45DB321D-SU is based on the NOR Flash memory technology. It utilizes a serial interface, allowing for easy integration with microcontrollers. The memory can be accessed in both random and sequential modes, providing flexibility for various applications. Data can be read, written, erased, and programmed at the sector or page level. The device also includes software and hardware protection features to prevent accidental data corruption.

Application Field Plans

The AT45DB321D-SU is suitable for a wide range of applications, including:

1. Embedded Systems
2. Consumer Electronics
3. Industrial Automation
4. Automotive Electronics
5. Medical Devices

Alternative Models

1. AT45DB161D-SU: 16 Megabit (2 Megabyte) capacity
2. AT45DB641D-SU: 64 Megabit (8 Megabyte) capacity
3. AT45DB642D-SU: 64 Megabit (8 Megabyte) capacity, Dual Output

These alternative models offer different capacities and features to cater to specific application requirements.

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