24AA65/SM

Product Overview

Category

The 24AA65/SM belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

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

Characteristics

• Non-volatile: The 24AA65/SM retains stored data even when power is removed.
• Electrically erasable: Data can be erased and reprogrammed electronically.
• High storage capacity: The chip has a storage capacity of 65 kilobits (8 kilobytes).
• Low power consumption: It operates on low power, making it suitable for battery-powered devices.

Package

The 24AA65/SM is available in a small outline integrated circuit (SOIC) package. This package provides a compact form factor and ease of integration into electronic circuits.

Essence

The essence of the 24AA65/SM lies in its ability to store and retrieve data reliably, while offering flexibility for reprogramming as needed.

Packaging/Quantity

The chip is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Storage Capacity: 65 kilobits (8 kilobytes)
• Operating Voltage: 1.7V to 5.5V
• Maximum Clock Frequency: 400 kHz
• Write Endurance: 1 million write cycles
• Data Retention: 200 years

Detailed Pin Configuration

The 24AA65/SM chip has a total of 8 pins, each serving a specific function:

1. VCC: Power supply input
2. SDA: Serial data input/output
3. SCL: Serial clock input
4. WP: Write protect input
5. A0: Address bit 0
6. A1: Address bit 1
7. A2: Address bit 2
8. GND: Ground

Functional Features

• Sequential Read: Allows for sequential reading of data stored in the chip.
• Write Protection: The WP pin can be used to protect the data from being overwritten.
• Software Write Protection: Additional software-based write protection features are available.
• Self-Timed Programming Cycle: Simplifies programming operations by eliminating the need for external timing control.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even during power loss.
• Electrically erasable capability allows for easy reprogramming.
• Compact package size enables integration into space-constrained designs.
• Low power consumption extends battery life in portable devices.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Slower write speeds compared to some alternative memory solutions.
• Susceptible to electromagnetic interference (EMI) due to its integrated circuit nature.

Working Principles

The 24AA65/SM utilizes a combination of electrically controlled floating gate transistors to store and retrieve data. When data is written, an electrical charge is trapped in the floating gate, altering the transistor's behavior. This charge can be removed during the erase cycle, allowing the transistor to return to its original state. The stored data can then be read by applying appropriate voltage levels to the chip's pins.

Detailed Application Field Plans

The 24AA65/SM finds applications in various fields, including:

1. Embedded Systems: Used for storing configuration data, firmware updates, and calibration settings in microcontrollers.
2. Industrial Automation: Enables non-volatile storage of critical parameters and system configurations in industrial control systems.
3. Automotive Electronics: Utilized for storing vehicle-specific data, such as mileage, user preferences, and diagnostic information.
4. Consumer Electronics: Integrated into devices like smart TVs, set-top boxes, and gaming consoles for storing user profiles, settings, and firmware updates.

Detailed and Complete Alternative Models

1. 24AA64/SM: Similar to the 24AA65/SM but with a slightly lower storage capacity of 64 kilobits (8 kilobytes).
2. 24AA128/SM: Offers double the storage capacity compared to the 24AA65/SM, with 128 kilobits (16 kilobytes) available.

These alternative models provide options for different storage requirements while maintaining similar functionality and characteristics.

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