AT45DQ321-MHFHJ-T

Product Overview

Category

The AT45DQ321-MHFHJ-T belongs to the category of non-volatile memory devices.

Use

This product is primarily used for data storage in various electronic devices, such as microcontrollers, embedded systems, and consumer electronics.

Characteristics

• Non-volatile: The AT45DQ321-MHFHJ-T retains data even when power is disconnected.
• High capacity: This device offers a storage capacity of 32 megabits (4 megabytes).
• Fast access time: With a maximum access time of 85 nanoseconds, it ensures quick retrieval of stored data.
• Low power consumption: The AT45DQ321-MHFHJ-T is designed to operate efficiently with minimal power requirements.
• Wide temperature range: It can function reliably within a temperature range of -40°C to +85°C.

Package

The AT45DQ321-MHFHJ-T is available in a compact surface-mount package, which facilitates easy integration into circuit boards.

Essence

This non-volatile memory device is essential for storing critical data in electronic systems, ensuring data integrity and persistence.

Packaging/Quantity

The AT45DQ321-MHFHJ-T is typically packaged in reels, containing a quantity of 250 units per reel.

Specifications

• Memory Type: Flash
• Capacity: 32 Megabits (4 Megabytes)
• Interface: Serial Peripheral Interface (SPI)
• Supply Voltage: 2.7V to 3.6V
• Access Time: 85 ns (maximum)
• Operating Temperature Range: -40°C to +85°C
• Package Type: Surface Mount
• Package Dimensions: 8mm x 6mm

Detailed Pin Configuration

The AT45DQ321-MHFHJ-T has a total of 8 pins, which are assigned specific functions:

1. VCC: Power supply input
2. GND: Ground connection
3. SI: Serial data input
4. SO: Serial data output
5. WP: Write protect input
6. HOLD: Hold input
7. SCK: Serial clock input
8. CS: Chip select input

Functional Features

• High-speed data transfer: The AT45DQ321-MHFHJ-T supports a maximum serial clock frequency of 66 MHz, enabling fast data transfer.
• Sector-based architecture: It organizes memory into multiple sectors, allowing for efficient read and write operations on specific sections of the memory.
• Hardware and software protection: This device offers various protection mechanisms, including write protection and hardware lock, to prevent unauthorized access or modification of stored data.
• Erase and program operations: The AT45DQ321-MHFHJ-T supports both sector erase and byte program operations, providing flexibility in managing data storage.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data persistence even during power loss.
• High storage capacity allows for storing large amounts of data.
• Fast access time enables quick retrieval of information.
• Low power consumption prolongs battery life in portable devices.
• Wide temperature range ensures reliable operation in various environments.

Disadvantages

• Limited endurance: Flash memory has a finite number of erase/write cycles before it may become unreliable.
• Relatively higher cost compared to other types of memory.

Working Principles

The AT45DQ321-MHFHJ-T utilizes flash memory technology to store and retrieve data. It employs a combination of floating-gate transistors and charge storage to represent binary information. When data is written, charges are trapped in the floating gate, altering the transistor's behavior. During read operations, the stored charges are sensed to determine the stored data.

Detailed Application Field Plans

The AT45DQ321-MHFHJ-T finds applications in various fields, including: 1. Automotive electronics: Used for storing firmware, configuration data, and event logs in automotive control systems. 2. Industrial automation: Enables data storage in programmable logic controllers (PLCs) and industrial control systems. 3. Consumer electronics: Utilized in devices such as digital cameras, set-top boxes, and gaming consoles for data storage purposes. 4. Medical devices: Provides non-volatile memory for storing patient data, device configurations, and firmware in medical equipment.

Detailed and Complete Alternative Models

• AT45DB321E-MHFHJ-T
• AT45DB321D-MHFHJ-T
• AT45DB321C-MHFHJ-T
• AT45DB321B-MHFHJ-T

These alternative models offer similar functionality and specifications to the AT45DQ321-MHFHJ-T, providing options for different design requirements.

In conclusion, the AT45DQ321-MHFHJ-T is a high-capacity non-volatile memory device that