Encyclopedia Entry: 93C86A-E/SN

Product Overview

Category

The 93C86A-E/SN belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

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

Characteristics

• Non-volatile: The 93C86A-E/SN retains stored data even when power is removed.
• Electrically erasable: The chip allows for easy modification and erasure of stored data.
• High storage capacity: The 93C86A-E/SN has a storage capacity of 8 kilobits (1 kilobyte).
• Serial communication: It utilizes a serial interface for data transfer.

Package

The 93C86A-E/SN is available in an 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of the 93C86A-E/SN lies in its ability to provide reliable and non-volatile data storage in a compact form factor.

Packaging/Quantity

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

Specifications

• Storage Capacity: 8 kilobits (1 kilobyte)
• Interface: Serial
• Operating Voltage: 2.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: Up to 200 years
• Write Endurance: 1 million write cycles

Detailed Pin Configuration

The 93C86A-E/SN 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 Operations: The chip allows for sequential reading and writing of data.
• Hardware Data Protection: It provides write protection to prevent accidental modification or erasure of stored data.
• Self-Timed Programming: The 93C86A-E/SN automatically manages the timing of programming operations, simplifying the integration process.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data retention even during power loss.
• Compact form factor enables integration into space-constrained devices.
• High storage capacity for various applications.
• Serial interface simplifies data transfer and control.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Slower read and write speeds compared to some alternative models.
• Vulnerable to electromagnetic interference (EMI) due to its serial communication nature.

Working Principles

The 93C86A-E/SN utilizes a combination of floating gate transistors and electronic charge injection to store and retrieve data. When data is written, an electrical charge is injected into the floating gate, altering the transistor's behavior. This charge can be removed during the erasure process, 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 93C86A-E/SN finds application in various fields, including:

1. Microcontrollers: Used for storing firmware, configuration settings, and calibration data.
2. Automotive Systems: Employed in electronic control units (ECUs) for storing vehicle-specific data, such as VIN numbers and mileage.
3. Consumer Electronics: Integrated into devices like smart TVs, set-top boxes, and gaming consoles for storing user preferences and system settings.

Detailed and Complete Alternative Models

1. 93C66A-E/SN: Similar to the 93C86A-E/SN but with a lower storage capacity of 4 kilobits.
2. 25AA080D-I/SN: An alternative EEPROM chip with an 8-kilobit storage capacity, utilizing a different interface (SPI) for data transfer.
3. AT24C08AN-10SU-2.7: Another 8-kilobit EEPROM chip with a wider operating voltage range and faster write speeds.

In conclusion, the 93C86A-E/SN is a versatile EEPROM chip that offers reliable non-volatile data storage in a compact form factor. Its serial interface, high storage capacity, and hardware data protection make it suitable for various applications in microcontrollers, automotive systems, and consumer electronics. While it has some limitations in terms of storage capacity and speed compared to alternative models, its advantages outweigh these drawbacks, making it a popular choice in the industry.