AT45DB321C-CU

Product Overview

Category: Integrated Circuit (IC)

Use: The AT45DB321C-CU is a flash memory IC primarily used for data storage and retrieval in various electronic devices. It offers non-volatile storage capabilities, making it suitable for applications that require reliable and persistent data storage.

Characteristics: - High storage capacity - Fast read and write operations - Low power consumption - Small form factor - Robust and durable design

Package: The AT45DB321C-CU is available in a compact and industry-standard 8-pin SOIC (Small Outline Integrated Circuit) package. This package ensures easy integration into different electronic systems.

Essence: The essence of the AT45DB321C-CU lies in its ability to provide reliable and high-performance flash memory storage in a compact form factor. It combines advanced technology with efficient design to meet the demanding requirements of modern electronic devices.

Packaging/Quantity: The AT45DB321C-CU is typically sold in reels or tubes, containing a specific quantity of ICs per package. The exact packaging and quantity may vary depending on the supplier and 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

Pin Configuration

The AT45DB321C-CU features an 8-pin SOIC package with the following pin configuration:

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

Functional Features

• High-Speed Data Transfer: The AT45DB321C-CU supports fast data transfer rates, allowing for efficient read and write operations.
• Flexible Erase and Write Operations: It provides sector-based erase and program operations, enabling selective modification of data without affecting the entire memory.
• Hardware Protection Mechanisms: The IC includes write protection features to prevent accidental or unauthorized modifications to stored data.
• Power-Saving Modes: It offers low-power standby and power-down modes, reducing energy consumption during idle periods.

Advantages and Disadvantages

Advantages: - Large storage capacity - Fast data transfer rates - Low power consumption - Compact form factor - Reliable and durable design

Disadvantages: - Limited endurance (10,000 erase/write cycles) - Requires an external microcontroller or host device for operation

Working Principles

The AT45DB321C-CU utilizes flash memory technology to store and retrieve data. It employs a Serial Peripheral Interface (SPI) for communication with an external microcontroller or host device. The IC uses a combination of floating-gate transistors and charge storage to retain data even when power is disconnected.

During write operations, the IC erases the targeted memory sectors and then programs new data into the erased locations. Reading data involves retrieving the stored information from the memory cells and transmitting it to the host device via the SPI interface.

Detailed Application Field Plans

The AT45DB321C-CU finds applications in various electronic devices that require reliable and non-volatile data storage. Some potential application fields include:

1. Consumer Electronics: Used in digital cameras, portable media players, and gaming consoles for storing photos, videos, music, and game data.
2. Industrial Automation: Employed in data loggers, control systems, and monitoring devices to store critical operational data.
3. Automotive Electronics: Integrated into automotive infotainment systems, navigation units, and engine control modules for storing firmware, maps, and vehicle data.
4. Medical Devices: Utilized in medical equipment such as patient monitors, diagnostic devices, and implantable devices for storing patient data and device configurations.

Detailed and Complete Alternative Models

1. AT45DB321D-CU: Similar to the AT45DB321C-CU, this model offers the same storage capacity and features but operates at a lower voltage range (1.65V - 2.7V).
2. AT45DB641E-CU: This model provides double the storage capacity (64 megabits) compared to the AT45DB321C-CU while maintaining similar characteristics and functionality.

These alternative models offer flexibility in terms of voltage requirements and increased storage capacity, catering to different application needs.

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