Encyclopedia Entry: 93C66A-I/ST

Product Overview

• Category: Integrated Circuit (IC)
• Use: Non-volatile Electrically Erasable Programmable Read-Only Memory (EEPROM)
• Characteristics: Small form factor, low power consumption, high data retention, and endurance
• Package: SOIC-8 (Small Outline Integrated Circuit), Tape and Reel packaging
• Essence: The 93C66A-I/ST is a widely used EEPROM IC that provides non-volatile storage for various electronic devices.
• Packaging/Quantity: Available in reels of 2,500 units.

Specifications

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

Detailed Pin Configuration

The 93C66A-I/ST IC has eight pins arranged as follows:

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| | 1 | 8 | VCC 2 | 7 | Chip Select (CS) 3 | 6 | Serial Data Input (DI) 4 | 5 | Serial Data Output (DO) |___________| ```

Functional Features

• Serial Interface: The IC utilizes a simple three-wire serial interface for communication with the host device.
• Sequential Read Operation: Allows consecutive read operations without the need for readdressing.
• Software Protection: Supports software write protection of memory contents.
• Self-Timed Programming Cycle: Automatically manages internal timing during write and erase operations.

Advantages

• Compact size enables integration into space-constrained designs.
• Low power consumption makes it suitable for battery-powered devices.
• High data retention ensures long-term reliability.
• Wide operating voltage range provides flexibility in various applications.

Disadvantages

• Limited memory size may not be sufficient for certain applications requiring larger storage capacity.
• Relatively slower write time compared to some other EEPROM ICs.

Working Principles

The 93C66A-I/ST operates based on the principles of electrically erasable programmable read-only memory (EEPROM). It uses a combination of electrical signals and internal circuitry to store and retrieve data. The serial interface allows the host device to communicate with the IC, enabling read and write operations.

Detailed Application Field Plans

The 93C66A-I/ST is commonly used in various electronic devices that require non-volatile memory storage. Some typical application fields include: - Automotive electronics - Consumer electronics - Industrial control systems - Medical devices - Communication equipment

Alternative Models

• 93C46A-I/ST: 2 kilobits (256 x 8 bits) EEPROM IC
• 93C86A-I/ST: 16 kilobits (2048 x 8 bits) EEPROM IC
• 93C56A-I/ST: 2 kilobits (256 x 8 bits) EEPROM IC with extended temperature range

These alternative models offer different memory sizes and features to cater to specific requirements.

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