AT25020B-SSHL-B

Product Overview

Category

AT25020B-SSHL-B belongs to the category of Serial EEPROM (Electrically Erasable Programmable Read-Only Memory) chips.

Use

This product is commonly used for non-volatile storage in various electronic devices, such as microcontrollers, computers, and consumer electronics.

Characteristics

• Non-volatile memory: The AT25020B-SSHL-B retains data even when power is removed.
• High endurance: It can withstand a large number of read and write cycles.
• Small form factor: The chip is compact and suitable for space-constrained applications.
• Low power consumption: It operates efficiently, consuming minimal power.
• Wide operating voltage range: The AT25020B-SSHL-B can function within a broad voltage range.
• High-speed performance: It offers fast read and write operations.

Package and Quantity

The AT25020B-SSHL-B is available in a small surface-mount package. It is typically sold in reels or tubes containing a specified quantity of chips.

Specifications

• Memory capacity: 2 kilobits (256 bytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating voltage: 1.8V to 5.5V
• Operating temperature range: -40°C to +85°C
• Write endurance: 1 million cycles
• Data retention: 100 years

Pin Configuration

The AT25020B-SSHL-B has eight pins, each serving a specific purpose. The pin configuration is as follows:

1. Chip Select (CS)
2. Serial Clock (SCK)
3. Serial Data Input/Output (SI/O)
4. Ground (GND)
5. Write Protect (WP)
6. Hold (HOLD)
7. VCC (Power Supply)
8. Not Connected (NC)

Functional Features

• Byte-level Read and Write: The AT25020B-SSHL-B allows individual bytes to be read from or written to the memory.
• Sequential Read: It supports sequential reading of multiple bytes, enabling efficient data retrieval.
• Software Protection: The chip provides a write protection mechanism to prevent accidental modification of stored data.
• Hardware Hold: The HOLD pin allows pausing ongoing operations without losing data.

Advantages

• Compact size and low power consumption make it suitable for portable devices.
• High endurance ensures reliable and long-lasting performance.
• Wide operating voltage range enables compatibility with various systems.
• Fast read and write speeds enhance overall system performance.

Disadvantages

• Limited storage capacity may not be sufficient for certain applications requiring larger memory.
• Lack of built-in security features may pose a risk in sensitive applications.

Working Principles

The AT25020B-SSHL-B utilizes EEPROM technology, which allows data to be electrically erased and reprogrammed. It employs a serial interface (SPI) for communication with the host device. When data is written, an electrical charge is applied to specific memory cells, altering their state. Reading involves detecting the state of these cells to retrieve stored information.

Application Field Plans

The AT25020B-SSHL-B finds application in various fields, including: 1. Microcontrollers: Used for storing program code and configuration data. 2. Automotive Electronics: Employed in vehicle control units for data storage. 3. Industrial Automation: Utilized in control systems for parameter storage. 4. Consumer Electronics: Found in devices like smart TVs, set-top boxes, and gaming consoles for firmware storage.

Alternative Models

For those seeking alternatives to the AT25020B-SSHL-B, the following models provide similar functionality: 1. AT25040B-SSHL-B: Offers double the memory capacity (4 kilobits). 2. AT25080B-SSHL-B: Provides four times the memory capacity (8 kilobits). 3. AT25160B-SSHL-B: Offers eight times the memory capacity (16 kilobits).

In conclusion, the AT25020B-SSHL-B is a compact and versatile Serial EEPROM chip with high endurance and low power consumption. It finds application in various fields, providing reliable non-volatile storage for electronic devices.

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