AT25DF321A-SH-B

Product Overview

Category

AT25DF321A-SH-B belongs to the category of Serial Flash Memory.

Use

It is primarily used for storing and retrieving digital information in electronic devices.

Characteristics

• Non-volatile memory: The data stored in AT25DF321A-SH-B is retained even when power is removed.
• High storage capacity: It has a capacity of 32 megabits (4 megabytes).
• Serial interface: The memory can be accessed using a serial communication protocol.
• Low power consumption: AT25DF321A-SH-B operates at low power levels, making it suitable for battery-powered devices.

Package

AT25DF321A-SH-B is available in a small form factor package, commonly known as SOP (Small Outline Package).

Essence

The essence of AT25DF321A-SH-B lies in its ability to provide reliable and high-capacity non-volatile storage in a compact package.

Packaging/Quantity

AT25DF321A-SH-B is typically packaged in reels containing a specific quantity of chips. The exact quantity may vary 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
• Erase/Program Cycle Endurance: 100,000 cycles
• Data Retention: 20 years

Detailed Pin Configuration

The AT25DF321A-SH-B has a total of 8 pins:

1. Chip Select (/CS): Used to enable or disable the device for communication.
2. Serial Clock (SCK): Provides the clock signal for synchronous communication.
3. Serial Data Input (SI): Used to input data into the device.
4. Serial Data Output (SO): Outputs data from the device.
5. Hold (/HOLD): Allows external devices to pause communication with the memory.
6. Write Protect (/WP): Enables or disables write operations on the memory.
7. Ground (GND): Common ground reference.
8. Power Supply (VCC): Power input for the device.

Functional Features

• Fast Read and Write Operations: AT25DF321A-SH-B offers high-speed read and write operations, allowing for efficient data transfer.
• Sector Erase Capability: The memory can be erased in sectors, enabling selective modification of data.
• Software Protection: It provides software-based protection mechanisms to prevent unauthorized access to stored data.
• Low Power Consumption: AT25DF321A-SH-B operates at low power levels, making it suitable for battery-powered devices.
• High Reliability: The memory is designed to withstand harsh environmental conditions and has a long data retention period.

Advantages and Disadvantages

Advantages

• High storage capacity
• Compact form factor
• Fast read and write operations
• Software protection mechanisms
• Low power consumption

Disadvantages

• Limited erase/program cycle endurance
• Requires a serial interface for communication

Working Principles

AT25DF321A-SH-B utilizes the Serial Peripheral Interface (SPI) protocol for communication. It stores data in non-volatile memory cells that retain information even when power is removed. The memory can be accessed by sending commands through the SPI interface, allowing for read, write, and erase operations.

Detailed Application Field Plans

AT25DF321A-SH-B finds applications in various electronic devices, including but not limited to: - Consumer electronics - Automotive systems - Industrial control systems - Medical devices - Communication equipment

Detailed and Complete Alternative Models

Some alternative models to AT25DF321A-SH-B include: - AT25DF641A-SH-B: A higher capacity variant with 64 megabits (8 megabytes) of storage. - MX25L3206E: A similar serial flash memory chip manufactured by Macronix.

These alternative models offer similar functionality and can be used as replacements depending on specific requirements.

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