AT45DB021-JC

Product Overview

Category: Integrated Circuit (IC)
Use: Data Storage
Characteristics: Non-volatile, Serial Interface, Flash Memory
Package: 8-pin SOIC (Small Outline Integrated Circuit)
Essence: The AT45DB021-JC is a flash memory IC that provides non-volatile data storage capabilities. It features a serial interface, making it suitable for various applications requiring reliable and compact data storage solutions.
Packaging/Quantity: The AT45DB021-JC is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

The AT45DB021-JC has the following specifications:

Memory Size: 2 Megabits (256 Kilobytes)
Operating Voltage: 2.7V to 3.6V
Interface: Serial Peripheral Interface (SPI)
Page Size: 264 bytes
Sector Size: 4 kilobytes
Erase Time: 18 milliseconds (typical)
Data Retention: Up to 20 years
Endurance: 10,000 erase/write cycles

Pin Configuration

The AT45DB021-JC has an 8-pin SOIC package with the following pin configuration:

Chip Select (/CS)
Output Enable (/OE)
Write Protect (/WP)
Serial Clock (SCK)
Serial Data Input (SI)
Serial Data Output (SO)
Ground (GND)
Power Supply (VCC)

Functional Features

The AT45DB021-JC offers the following functional features:

Page Program: Allows individual bytes or entire pages to be programmed.
Sector Erase: Enables erasing of entire sectors for efficient memory management.
Continuous Read Mode: Supports continuous reading of data from consecutive memory locations.
Software Protection: Provides software-controlled write protection to prevent accidental modification of stored data.
Deep Power-down Mode: Reduces power consumption when the device is not in use.

Advantages and Disadvantages

Advantages of the AT45DB021-JC include:

Compact package size
Low power consumption
High data retention
Wide operating voltage range

Disadvantages of the AT45DB021-JC include:

Limited storage capacity compared to larger flash memory devices
Relatively slower erase time compared to some other flash memory ICs

Working Principles

The AT45DB021-JC utilizes a serial interface and operates based on the principles of flash memory technology. It stores data in non-volatile memory cells, allowing for reliable data retention even when power is removed. The serial interface facilitates easy integration with microcontrollers and other digital systems.

Detailed Application Field Plans

The AT45DB021-JC can be used in various applications, including but not limited to:

Embedded Systems: Provides non-volatile storage for program code and data in microcontroller-based systems.
Consumer Electronics: Enables data storage in devices such as digital cameras, portable media players, and gaming consoles.
Industrial Automation: Offers reliable storage for configuration data, event logging, and firmware updates in industrial control systems.
Automotive Electronics: Supports data storage requirements in automotive applications like infotainment systems, instrument clusters, and telematics devices.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the AT45DB021-JC are:

AT25SF041: 4 Megabit Serial Flash Memory IC with SPI interface.
MX25L8006E: 8 Megabit Serial Flash Memory IC with SPI interface.
W25Q64BV: 64 Megabit Serial Flash Memory IC with SPI interface.

These alternative models provide different storage capacities and may have varying specifications, but they can serve as alternatives depending on specific application requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací AT45DB021-JC v technických řešeních

Sure! Here are 10 common questions and answers related to the application of AT45DB021-JC in technical solutions:

Q: What is AT45DB021-JC? A: AT45DB021-JC is a serial flash memory chip manufactured by Adesto Technologies. It has a capacity of 2 megabits (256 kilobytes) and operates on a SPI interface.
Q: What are the typical applications of AT45DB021-JC? A: AT45DB021-JC is commonly used in various embedded systems, IoT devices, industrial automation, consumer electronics, and other applications that require non-volatile storage.
Q: What is the operating voltage range for AT45DB021-JC? A: The operating voltage range for AT45DB021-JC is typically between 2.7V and 3.6V.
Q: What is the maximum data transfer rate supported by AT45DB021-JC? A: AT45DB021-JC supports a maximum data transfer rate of up to 85 MHz when using the SPI interface.
Q: Can AT45DB021-JC be used for code storage in microcontrollers? A: Yes, AT45DB021-JC can be used for storing code in microcontrollers. It provides fast access times and can be directly interfaced with most microcontrollers.
Q: Does AT45DB021-JC support wear-leveling algorithms? A: No, AT45DB021-JC does not have built-in wear-leveling algorithms. If wear-leveling is required, it needs to be implemented at the software level.
Q: Can AT45DB021-JC be used as a replacement for other flash memory chips? A: In many cases, AT45DB021-JC can be used as a drop-in replacement for other flash memory chips with similar specifications. However, it's always recommended to consult the datasheets and verify compatibility.
Q: What is the typical endurance of AT45DB021-JC? A: AT45DB021-JC has a typical endurance of 100,000 write cycles per sector. This means that each sector can be written to approximately 100,000 times before it may start to exhibit errors.
Q: Does AT45DB021-JC support hardware or software protection features? A: Yes, AT45DB021-JC supports both hardware and software protection features, including write protection, lock bits, and password protection.
Q: Can AT45DB021-JC operate in extreme temperature conditions? A: Yes, AT45DB021-JC is designed to operate in a wide temperature range, typically from -40°C to +85°C, making it suitable for applications in harsh environments.

Please note that these answers are general and may vary depending on specific implementation details and requirements. It's always recommended to refer to the official datasheet and documentation for accurate information.