AT45DB321C-CNU

Product Overview

Category

AT45DB321C-CNU belongs to the category of flash memory devices.

Use

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

Characteristics

• Non-volatile memory
• High-speed data transfer
• Low power consumption
• Compact size

Package

AT45DB321C-CNU is available in a small form factor package, making it suitable for integration into compact electronic devices.

Essence

The essence of AT45DB321C-CNU lies in its ability to provide reliable and efficient data storage solutions for a wide range of applications.

Packaging/Quantity

This product is typically packaged in reels or trays, with varying quantities depending on the manufacturer's specifications.

Specifications

• Memory 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
• Erase/program cycles: 10,000 minimum

Detailed Pin Configuration

The AT45DB321C-CNU has a total of 8 pins, each serving a specific function:

1. Chip Select (/CS) - Enables communication with the device.
2. Serial Clock (SCK) - Provides the clock signal for data transfer.
3. Serial Data Input (SI) - Transfers data from the microcontroller to the device.
4. Serial Data Output (SO) - Transfers data from the device to the microcontroller.
5. Write Protect (/WP) - Controls write protection of the memory array.
6. Reset (/RESET) - Resets the device to its default state.
7. VCC - Power supply input.
8. Ground (GND) - Common ground reference.

Functional Features

• Page-based architecture for efficient data storage and retrieval.
• Sector erase and block erase operations for flexible memory management.
• Continuous read mode for fast sequential data access.
• Hardware and software protection mechanisms to prevent unauthorized access.
• Built-in error detection and correction algorithms for data integrity.

Advantages and Disadvantages

Advantages

• High-speed data transfer allows for quick access to stored information.
• Low power consumption extends battery life in portable devices.
• Compact size enables integration into space-constrained designs.
• Reliable data retention ensures long-term storage without loss of information.

Disadvantages

• Limited erase/program cycles may restrict the lifespan of the device.
• Higher cost compared to other non-volatile memory options.
• Requires a compatible microcontroller with SPI interface for communication.

Working Principles

AT45DB321C-CNU utilizes flash memory technology, which stores data in floating-gate transistors. When data is written, charges are trapped in the floating gate, altering the transistor's conductive properties. This change can be detected during read operations, allowing the retrieval of stored information.

Detailed Application Field Plans

AT45DB321C-CNU finds applications in various fields, including: 1. Consumer electronics: Smartphones, tablets, digital cameras. 2. Automotive: Infotainment systems, navigation devices. 3. Industrial automation: Data loggers, control systems. 4. Medical devices: Patient monitoring systems, diagnostic equipment. 5. Internet of Things (IoT): Connected devices, sensors.

Detailed and Complete Alternative Models

1. AT45DB161E-SHN-T: 16 megabit (2 megabyte) flash memory with similar features.
2. AT45DB641E-MU: 64 megabit (8 megabyte) flash memory with extended temperature range.
3. AT45DB081D-SSHN-B: 8 megabit (1 megabyte) flash memory with smaller package size.

These alternative models offer different capacities and specifications to cater to diverse application requirements.

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