AT45DB321D-TU

Product Overview

Category

AT45DB321D-TU 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: Retains data even when power is turned off.
• High storage capacity: The AT45DB321D-TU has a storage capacity of 32 megabits (4 megabytes).
• Fast data transfer rate: It supports high-speed data transfer, allowing for efficient read and write operations.
• Low power consumption: Designed to minimize power usage, making it suitable for battery-powered devices.
• Reliable performance: Offers robust data integrity and endurance.

Package

The AT45DB321D-TU is available in a standard Thin Quad Flat Pack (TQFP) package.

Essence

The essence of AT45DB321D-TU lies in its ability to provide reliable and high-capacity data storage in a compact form factor.

Packaging/Quantity

This product is typically packaged in reels or trays, with a quantity of 250 units per reel/tray.

Specifications

• Memory size: 32 megabits (4 megabytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating voltage: 2.7V - 3.6V
• Data transfer rate: Up to 66 MHz
• Erase/Program cycles: 10,000 minimum
• Data retention: 20 years minimum
• Operating temperature range: -40°C to +85°C

Detailed Pin Configuration

The AT45DB321D-TU has a total of 28 pins. Here is the detailed pin configuration:

1. VCC: Power supply voltage
2. GND: Ground
3. SI: Serial input
4. SO: Serial output
5. WP: Write protect
6. HOLD: Hold input
7. RESET: Reset input
8. NC: No connection
9. NC: No connection
10. NC: No connection
11. NC: No connection
12. NC: No connection
13. NC: No connection
14. NC: No connection
15. NC: No connection
16. NC: No connection
17. NC: No connection
18. NC: No connection
19. NC: No connection
20. NC: No connection
21. NC: No connection
22. NC: No connection
23. NC: No connection
24. NC: No connection
25. NC: No connection
26. NC: No connection
27. CS: Chip select
28. VCC: Power supply voltage

Functional Features

• Page program operation: Allows data to be written in page-sized increments.
• Continuous read mode: Enables sequential reading of data without the need for readdressing.
• Sector erase capability: Supports erasing of large memory sectors.
• Software and hardware protection mechanisms: Protects against accidental data modification or deletion.
• Deep power-down mode: Reduces power consumption when the device is not in use.

Advantages and Disadvantages

Advantages

• High storage capacity
• Fast data transfer rate
• Low power consumption
• Reliable performance
• Support for various protection mechanisms

Disadvantages

• Limited erase/program cycles
• Relatively high cost compared to other memory options

Working Principles

The AT45DB321D-TU utilizes a combination of floating gate and control gate transistors to store and retrieve data. It employs a serial interface for communication with the host device, allowing for efficient data transfer. The memory cells are organized into sectors, pages, and bytes, providing flexibility in data management.

Detailed Application Field Plans

The AT45DB321D-TU is widely used in various applications, including but not limited to: - Consumer electronics - Automotive systems - Industrial automation - Medical devices - Communication equipment

Detailed and Complete Alternative Models

1. AT45DB161D-TU: 16 megabits (2 megabytes) flash memory with similar features.
2. AT45DB641D-TU: 64 megabits (8 megabytes) flash memory with higher storage capacity.

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

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