AT25040B-XHL-B

Product Overview

Category

AT25040B-XHL-B belongs to the category of Serial EEPROM (Electrically Erasable Programmable Read-Only Memory) chips.

Use

This product is primarily used for non-volatile data storage in various electronic devices, such as microcontrollers, automotive systems, consumer electronics, and industrial applications.

Characteristics

• Non-volatile memory: The AT25040B-XHL-B retains data even when power is removed.
• High endurance: It can withstand a large number of read/write cycles.
• Low power consumption: The chip operates at low voltage levels, making it energy-efficient.
• Small form factor: The compact size allows for easy integration into different electronic systems.

Package and Quantity

The AT25040B-XHL-B is available in a standard 8-pin SOIC (Small Outline Integrated Circuit) package. Each package contains one chip.

Specifications

• Memory capacity: 4 kilobits (512 bytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating voltage: 1.7V to 5.5V
• Operating temperature range: -40°C to +85°C
• Data retention: Up to 100 years
• Write endurance: 1 million cycles

Pin Configuration

The AT25040B-XHL-B has the following pin configuration:

| Pin Number | Pin Name | Function | |------------|----------|----------| | 1 | CS | Chip Select | | 2 | DO | Data Output | | 3 | WP | Write Protect | | 4 | GND | Ground | | 5 | DI | Data Input | | 6 | CLK | Clock | | 7 | NC | No Connection | | 8 | VCC | Power Supply |

Functional Features

• Byte-level read and write operations: Allows for efficient data manipulation.
• Software and hardware protection mechanisms: Ensures data integrity and prevents unauthorized access.
• Sequential read mode: Enables fast consecutive data retrieval.
• Write protection: The WP pin can be used to protect the memory from accidental writes.

Advantages

• Compact size and low power consumption make it suitable for portable devices.
• High endurance and long data retention ensure reliable performance.
• Wide operating voltage range allows compatibility with various systems.
• SPI interface provides easy integration with microcontrollers and other devices.

Disadvantages

• Limited storage capacity compared to larger EEPROM chips.
• Slower write speed compared to some other non-volatile memory technologies.
• Vulnerable to electromagnetic interference due to its small form factor.

Working Principles

The AT25040B-XHL-B utilizes a floating gate transistor structure to store data. When writing, an electric charge is applied to the floating gate, altering its electrical characteristics. This change is detected during reading, allowing the stored data to be retrieved accurately.

Application Field Plans

The AT25040B-XHL-B finds applications in various fields, including: 1. Automotive: Used for storing vehicle configuration data, mileage information, and error codes. 2. Industrial automation: Employed in programmable logic controllers (PLCs) for storing program code and configuration parameters. 3. Consumer electronics: Integrated into smart TVs, set-top boxes, and audio systems for storing user preferences and firmware updates. 4. Medical devices: Utilized for storing patient data, device settings, and calibration information.

Alternative Models

Other alternative models that offer similar functionality to the AT25040B-XHL-B include: - AT25080B-XHL-B: 8 kilobits capacity - AT25160B-XHL-B: 16 kilobits capacity - AT25320B-XHL-B: 32 kilobits capacity

In conclusion, the AT25040B-XHL-B is a compact and reliable Serial EEPROM chip with a capacity of 4 kilobits. It offers non-volatile data storage, high endurance, and low power consumption. With its wide range of applications and alternative models, it serves as an essential component in various electronic systems.

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