24AA64-E/ST

Product Overview

Category

The 24AA64-E/ST belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

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

Characteristics

• Electrically erasable: The 24AA64-E/ST allows for easy erasure and reprogramming of data without requiring physical removal.
• High storage capacity: With a capacity of 64 kilobits (8 kilobytes), this EEPROM chip offers ample space for storing critical information.
• Low power consumption: The device operates on low power, making it suitable for battery-powered applications.
• Wide operating voltage range: The 24AA64-E/ST can function within a voltage range of 1.7V to 5.5V, providing flexibility in different electronic systems.
• High reliability: This chip ensures data integrity through built-in error detection and correction mechanisms.

Package and Quantity

The 24AA64-E/ST is available in a small surface-mount package (ST) with eight pins. It is typically sold in reels or tubes containing multiple units.

Specifications

• Memory capacity: 64 kilobits (8 kilobytes)
• Operating voltage range: 1.7V to 5.5V
• Maximum clock frequency: 400 kHz
• Write endurance: 1 million write cycles
• Data retention: Up to 200 years
• Operating temperature range: -40°C to +85°C

Pin Configuration

The 24AA64-E/ST features an eight-pin configuration:

1. VCC: Power supply voltage
2. SDA: Serial data input/output
3. SCL: Serial clock input
4. WP: Write protect input
5. VSS: Ground
6. NC: No connection
7. NC: No connection
8. A2: Chip address selection input

Functional Features

• Sequential read and write operations: The 24AA64-E/ST supports sequential access to memory locations, enabling efficient data transfer.
• Software write protection: The WP pin allows users to enable or disable write operations, providing enhanced security for critical data.
• Page write buffer: This chip incorporates a page write buffer that enables fast and efficient programming of multiple bytes at once.
• Self-timed programming cycle: The device automatically manages the timing of write and erase operations, simplifying the integration process.

Advantages and Disadvantages

Advantages

• High storage capacity for extensive data storage requirements.
• Low power consumption, suitable for battery-powered devices.
• Wide operating voltage range for compatibility with various electronic systems.
• Built-in error detection and correction mechanisms ensure data integrity.
• Long data retention period of up to 200 years.

Disadvantages

• Limited clock frequency of 400 kHz may restrict high-speed data transfer in certain applications.
• Small package size may require additional space considerations during circuit design.

Working Principles

The 24AA64-E/ST utilizes an electrically erasable technology to store and retrieve data. It employs a combination of transistors and capacitors to represent binary information. When writing data, the chip applies electrical charges to specific memory cells, altering their state. During reading, the stored charges are detected and interpreted as digital information.

Detailed Application Field Plans

The 24AA64-E/ST finds application in various fields, including:

1. Microcontroller-based systems: Used for storing program code, configuration settings, and calibration data.
2. Consumer electronics: Enables non-volatile storage of user preferences, firmware updates, and device-specific data.
3. Industrial automation: Stores critical parameters, sensor calibration data, and system configuration settings.
4. Automotive electronics: Used for storing vehicle-specific information, such as mileage, service history, and user preferences.

Detailed Alternative Models

1. 24LC64-I/P: Similar to the 24AA64-E/ST, this model offers the same capacity and features but comes in a DIP package instead of an SMT package.
2. AT24C64N-10SU-2.7: This alternative chip from Atmel provides the same storage capacity and functionality with a slightly lower operating voltage range.
3. CAT24C64WI-GT3: Manufactured by ON Semiconductor, this EEPROM chip offers similar specifications and features, including a wide operating temperature range.

In conclusion, the 24AA64-E/ST is a versatile EEPROM chip that provides high-capacity, electrically erasable non-volatile memory storage. With its low power consumption, wide operating voltage range, and built-in error detection mechanisms, it is suitable for various applications in microcontroller-based systems, consumer electronics, industrial automation, and automotive electronics.

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