Encyclopedia Entry: 25AA1024T-I/MF

Product Overview

Category

The 25AA1024T-I/MF belongs to the category of Serial EEPROM (Electrically Erasable Programmable Read-Only Memory) chips.

Use

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

Characteristics

• Non-volatile memory: Retains data even when power is disconnected.
• High storage capacity: The 25AA1024T-I/MF has a capacity of 1,048,576 bits (128 kilobytes).
• Serial interface: Communicates using the Serial Peripheral Interface (SPI) protocol.
• Low power consumption: Designed to operate with minimal power requirements.
• Wide operating voltage range: Can function within a voltage range of 1.8V to 5.5V.

Package and Quantity

The 25AA1024T-I/MF is available in a small surface-mount package, typically a 8-pin SOIC (Small Outline Integrated Circuit). It is commonly sold in reels containing multiple units.

Specifications

• Memory Capacity: 1,048,576 bits (128 kilobytes)
• Interface: SPI (Serial Peripheral Interface)
• Operating Voltage Range: 1.8V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Endurance: 1,000,000 cycles
• Data Retention: 200 years

Pin Configuration

The 25AA1024T-I/MF has an 8-pin configuration with the following pin assignments:

1. Chip Select (/CS)
2. Serial Clock (SCK)
3. Serial Data Input/Output (SI/O)
4. Ground (GND)
5. Not Connected (NC)
6. Not Connected (NC)
7. Serial Data Output (SO)
8. Supply Voltage (VCC)

Functional Features

• Byte-level Read and Write Operations: Allows individual bytes to be read from or written to the memory.
• Sequential Read: Supports continuous reading of multiple bytes without requiring repeated address input.
• Hardware Protection: Provides write protection for specific memory areas to prevent accidental modification.
• Software Write Protection: Allows software control over write protection settings.
• Self-timed Erase and Write Cycles: Simplifies programming operations.

Advantages

• High storage capacity for a wide range of applications.
• Low power consumption, suitable for battery-powered devices.
• Compact package size enables integration into space-constrained designs.
• Wide operating voltage range allows compatibility with various systems.
• Reliable data retention and endurance characteristics ensure long-term usability.

Disadvantages

• Limited write endurance compared to other non-volatile memory technologies.
• Slower write speed compared to volatile memory alternatives.
• Requires an external microcontroller or interface circuitry for communication.

Working Principles

The 25AA1024T-I/MF utilizes EEPROM technology, which allows data to be electrically erased and reprogrammed. It operates by sending commands and data through the SPI interface, enabling read and write operations on specific memory locations.

Application Field Plans

The 25AA1024T-I/MF finds applications in various fields, including: 1. Embedded Systems: Used for firmware storage in microcontrollers and IoT devices. 2. Automotive Electronics: Stores configuration data and calibration parameters. 3. Industrial Automation: Enables data logging and parameter storage in control systems. 4. Consumer Electronics: Utilized for storing user preferences and settings in devices like smart TVs and set-top boxes.

Alternative Models

Other similar EEPROM chips that can be considered as alternatives to the 25AA1024T-I/MF include: - AT24C1024B: Manufactured by Atmel, offering similar capacity and interface. - CAT24C1024: Produced by ON Semiconductor, providing comparable features and performance.

In conclusion, the 25AA1024T-I/MF is a versatile Serial EEPROM chip with high storage capacity, low power consumption, and a wide operating voltage range. Its compact package and functional features make it suitable for various applications in embedded systems, automotive electronics, industrial automation, and consumer electronics.

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