25AA256-I/SM

Product Overview

Category:

The 25AA256-I/SM belongs to the category of serial EEPROM (Electrically Erasable Programmable Read-Only Memory) devices.

Use:

It is commonly used for non-volatile storage of data in various electronic systems, including consumer electronics, industrial equipment, and automotive applications.

Characteristics:

• Non-volatile memory
• Serial interface
• Low power consumption
• High reliability
• Small form factor

Package:

The 25AA256-I/SM is typically available in a surface-mount SOIC (Small Outline Integrated Circuit) package.

Essence:

This device provides reliable and flexible non-volatile memory storage for electronic systems with minimal power consumption.

Packaging/Quantity:

It is usually supplied in tape and reel packaging, with quantities varying based on manufacturer specifications.

Specifications

• Memory Size: 256 Kbits
• Interface: SPI (Serial Peripheral Interface)
• Operating Voltage: 1.8V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• Write Endurance: 1,000,000 cycles
• Data Retention: 200 years

Detailed Pin Configuration

The 25AA256-I/SM typically features an 8-pin SOIC package with the following pin configuration: 1. Chip Select (/CS) 2. Serial Clock (SCK) 3. Serial Data Input/Output (SI/SO) 4. Ground (GND) 5. Write Protect (/WP) 6. Hold (/HOLD) 7. VCC (Power Supply) 8. Not Connected (NC)

Functional Features

• Sequential read and write operations
• Software and hardware write protection
• Flexible addressing modes
• Status register for monitoring operation
• Deep power-down mode for ultra-low power consumption

Advantages and Disadvantages

Advantages

• Low power consumption
• High reliability and endurance
• Compact form factor
• Flexible addressing and protection features

Disadvantages

• Relatively slower access compared to other memory technologies
• Limited capacity compared to larger EEPROM or flash memory devices

Working Principles

The 25AA256-I/SM operates by utilizing the SPI interface to communicate with the host system. It stores and retrieves data through sequential read and write operations, while offering features such as write protection and deep power-down mode to optimize performance and power consumption.

Detailed Application Field Plans

The 25AA256-I/SM is widely used in various applications, including: - Consumer electronics (e.g., smart home devices, wearables) - Industrial control systems - Automotive electronics (e.g., engine control units, infotainment systems) - Medical devices - Communication equipment

Detailed and Complete Alternative Models

Some alternative models to the 25AA256-I/SM include: - 24AA256 - 25LC256 - AT25080A - CAT25C256

These alternatives offer similar functionality and compatibility within the serial EEPROM category, providing options for different design requirements and supply chain considerations.

In conclusion, the 25AA256-I/SM is a versatile and reliable serial EEPROM device that offers non-volatile memory storage for a wide range of electronic applications, with its compact form factor, low power consumption, and flexible features making it a popular choice among designers and engineers.

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