Encyclopedia Entry: 93C66AT-E/OT

Product Overview

• Category: Integrated Circuit (IC)
• Use: Non-volatile Electrically Erasable Programmable Read-Only Memory (EEPROM)
• Characteristics: Small form factor, low power consumption, high reliability
• Package: SOT-23-5 package
• Essence: Data storage and retrieval in electronic devices
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

Specifications

• Memory Size: 4 Kbits (512 x 8 bits)
• Operating Voltage: 2.5V to 5.5V
• Operating Temperature: -40°C to +85°C
• Write Time: 5 ms (typical)
• Data Retention: 200 years (minimum)

Detailed Pin Configuration

The 93C66AT-E/OT IC has a total of 5 pins arranged as follows:

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| | 1 | | 5 |____| | | 2 | | 4 |____| | | 3 | | |____| ```

Pin Description: 1. Chip Select (/CS): Enables the IC when set to a logic low level. 2. Serial Clock (SCK): Provides the clock signal for data transfer. 3. Serial Data Input (SI): Receives data serially for programming or reading. 4. Serial Data Output (SO): Outputs data serially during read operations. 5. Ground (GND): Common ground reference for the IC.

Functional Features

• Non-volatile memory: Retains stored data even when power is removed.
• Electrically erasable and programmable: Allows for easy modification of stored data.
• High endurance: Supports a large number of read and write cycles.
• Low power consumption: Ideal for battery-powered devices.
• Small form factor: Saves space in electronic designs.
• High reliability: Resistant to environmental factors such as temperature and humidity.

Advantages

• Easy integration into various electronic devices due to its small package size.
• Allows for flexible data storage and retrieval in embedded systems.
• Low power consumption extends battery life in portable devices.
• High reliability ensures data integrity in harsh operating conditions.

Disadvantages

• Limited memory capacity compared to other EEPROM variants.
• Slower write time compared to some competing memory technologies.
• Higher cost per bit compared to larger capacity memory options.

Working Principles

The 93C66AT-E/OT is based on EEPROM technology, which utilizes floating gate transistors to store and retrieve data. When data needs to be written, an electrical charge is applied to the floating gate, altering its threshold voltage. This change in threshold voltage represents the stored data. During read operations, the threshold voltage is measured to determine the stored information.

Detailed Application Field Plans

The 93C66AT-E/OT IC finds applications in various electronic devices that require non-volatile memory for data storage and retrieval. Some common application fields include: - Automotive electronics: Used for storing vehicle configuration settings, mileage data, etc. - Consumer electronics: Found in devices like smart TVs, set-top boxes, and gaming consoles for firmware storage. - Industrial automation: Utilized in programmable logic controllers (PLCs) for storing program code and configuration data. - Medical devices: Used for storing patient data, device settings, and calibration information.

Alternative Models

• 93C46AT-E/OT: Smaller capacity variant with 1 Kbit memory size.
• 93C86AT-E/OT: Larger capacity variant with 16 Kbits memory size.
• 93C56AT-E/OT: Intermediate capacity variant with 2 Kbits memory size.

Note: The above alternative models are from the same series and share similar pin configurations and functional features.

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