AT45DB021-TC

Product Overview

Category

AT45DB021-TC belongs to the category of flash memory devices.

Use

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

Characteristics

• Non-volatile: The AT45DB021-TC retains stored data even when power is removed.
• High capacity: It offers a storage capacity of 2 megabits (256 kilobytes).
• Fast access time: The device provides quick access to stored data, ensuring efficient operation.
• Low power consumption: It is designed to consume minimal power during both active and standby modes.

Package

The AT45DB021-TC is available in a compact Thin Small Outline Package (TSOP), which ensures easy integration into circuit boards.

Essence

The essence of this product lies in its ability to provide reliable and high-capacity data storage in a compact form factor, suitable for a wide range of electronic applications.

Packaging/Quantity

The AT45DB021-TC is typically packaged in reels, containing a quantity of 250 units per reel.

Specifications

• Storage Capacity: 2 megabits (256 kilobytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating Voltage: 2.7V - 3.6V
• Access Time: 85 nanoseconds (typical)
• Erase/Program Operations: 10,000 cycles (minimum)

Detailed Pin Configuration

The AT45DB021-TC features an 8-pin package with the following pin configuration:

1. Chip Select (/CS)
2. Output Enable (/OE)
3. Write Protect (/WP)
4. Serial Data Input (SI)
5. Serial Data Output (SO)
6. Serial Clock (SCK)
7. Ground (GND)
8. Power Supply (VCC)

Functional Features

• Page Program Operation: Allows data to be written in page-sized increments.
• Sector Erase Operation: Enables erasure of entire sectors for efficient memory management.
• Continuous Read Mode: Facilitates sequential reading of data from the memory array.
• Deep Power-down Mode: Reduces power consumption when the device is not in use.

Advantages and Disadvantages

Advantages

• High storage capacity for a wide range of applications.
• Fast access time ensures efficient data retrieval.
• Low power consumption prolongs battery life in portable devices.
• Compact package allows for easy integration into circuit boards.

Disadvantages

• Limited erase/program cycles may affect the lifespan of the device.
• Requires an external microcontroller or host system for operation.

Working Principles

The AT45DB021-TC utilizes flash memory technology to store and retrieve data. It employs a Serial Peripheral Interface (SPI) for communication with an external microcontroller or host system. The device operates by programming data into individual pages or erasing entire sectors as needed. The stored data can be accessed sequentially using the continuous read mode, providing fast and efficient data retrieval.

Detailed Application Field Plans

The AT45DB021-TC finds application in various fields, including: 1. Microcontrollers: Used for program storage and data logging. 2. Embedded Systems: Provides non-volatile storage for critical system data. 3. Consumer Electronics: Enables firmware updates and data storage in devices such as digital cameras and portable media players.

Detailed and Complete Alternative Models

Some alternative models to the AT45DB021-TC include: - AT25SF041: Offers similar functionality with a smaller storage capacity of 512 kilobits. - MX25L4006E: Provides a larger storage capacity of 4 megabits with comparable features. - S25FL116K: Offers higher erase/program cycles and a larger storage capacity of 16 megabits.

In conclusion, the AT45DB021-TC flash memory device provides reliable and high-capacity data storage in a compact form factor. Its fast access time, low power consumption, and versatile functionality make it suitable for various electronic applications.