Encyclopedia Entry: 93C66C-I/ST

Product Overview

Category

The 93C66C-I/ST belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

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

Characteristics

• Non-volatile: The 93C66C-I/ST retains stored data even when power is removed.
• Electrically erasable: Data can be erased and reprogrammed electronically, eliminating the need for physical removal or replacement.
• High storage capacity: This chip has a storage capacity of 4 kilobits (512 bytes).
• Low power consumption: The 93C66C-I/ST operates on low power, making it suitable for battery-powered devices.
• Wide operating voltage range: It can function within a voltage range of 2.5V to 5.5V.

Package and Quantity

The 93C66C-I/ST is available in an 8-pin SOIC (Small Outline Integrated Circuit) package. It is typically sold in reels containing a quantity of 2500 units.

Specifications

• Memory Capacity: 4 kilobits (512 bytes)
• Operating Voltage Range: 2.5V to 5.5V
• Interface: Serial (SPI - Serial Peripheral Interface)
• Operating Temperature Range: -40°C to +85°C
• Write Endurance: 1 million cycles
• Data Retention: 200 years

Detailed Pin Configuration

The 93C66C-I/ST features the following pin configuration:

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

Functional Features

• Sequential Read and Write: The chip allows sequential reading and writing of data, enabling efficient data access.
• Hardware Protection: It provides write protection to prevent accidental modification or erasure of stored data.
• Software Control: The 93C66C-I/ST can be controlled through software commands, facilitating easy integration into various systems.
• Fast Operation: With a maximum clock frequency of 5 MHz, it offers fast read and write operations.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even during power loss.
• Electrically erasable and reprogrammable, eliminating the need for physical replacement.
• Wide operating voltage range allows compatibility with different systems.
• Low power consumption makes it suitable for battery-powered devices.

Disadvantages

• Limited storage capacity compared to other EEPROM chips.
• Relatively slower write speed compared to some newer memory technologies.

Working Principles

The 93C66C-I/ST utilizes an electrically erasable floating-gate transistor technology. It stores data by trapping charges in the floating gate, which can be electrically manipulated to represent binary values (0s and 1s). The stored data can be read, erased, and rewritten using specific electrical signals and commands.

Detailed Application Field Plans

The 93C66C-I/ST finds applications in various fields, including: - Microcontrollers and embedded systems - Automotive electronics (e.g., engine control units, infotainment systems) - Consumer electronics (e.g., smart TVs, set-top boxes) - Industrial automation and control systems - Medical devices - Communication equipment

Alternative Models

Other alternative models that offer similar functionality to the 93C66C-I/ST include: - 93C46C-I/ST: 1 kilobit (128 bytes) capacity - 93C86C-I/ST: 16 kilobits (2 kilobytes) capacity - 25AA040-I/ST: 4 kilobits (512 bytes) capacity, SPI interface

These alternative models can be considered based on specific application requirements and desired memory capacity.

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