Encyclopedia Entry: 93LC86T-I/SN

Product Overview

Category

The 93LC86T-I/SN 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, computers, and consumer electronics.

Characteristics

• Non-volatile: Retains stored data even when power is removed.
• Electrically erasable: Allows for easy modification of stored data.
• Programmable: Can be written and rewritten multiple times.
• Small form factor: Comes in a compact package suitable for integration into various electronic systems.

Package

The 93LC86T-I/SN is packaged in a small outline integrated circuit (SOIC) package. This package type provides ease of handling and compatibility with surface mount technology (SMT) assembly processes.

Essence

The essence of the 93LC86T-I/SN lies in its ability to store and retrieve digital information reliably, making it an essential component for data storage in electronic systems.

Packaging/Quantity

This product is typically available in reels or tubes, with each containing a specific quantity of chips. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Memory Capacity: 8 kilobits (1 kilobyte)
• Operating Voltage: 2.5V to 5.5V
• Interface: Serial Peripheral Interface (SPI)
• Maximum Clock Frequency: 10 MHz
• Data Retention: Up to 200 years
• Endurance: Minimum 1 million write cycles

Detailed Pin Configuration

The 93LC86T-I/SN has a total of 8 pins, which are assigned specific functions:

1. Chip Select (/CS): Enables communication with the chip when pulled low.
2. Serial Clock (SCK): Provides the clock signal for data transfer.
3. Serial Data Input (SI): Used to input data serially into the chip.
4. Serial Data Output (SO): Outputs data serially from the chip.
5. Write Protect (/WP): When pulled low, prevents write operations.
6. VCC: Power supply voltage input.
7. Ground (GND): Common ground reference.
8. Hold (/HOLD): Allows pausing of serial communication without losing data.

Functional Features

• High-speed data transfer: The SPI interface enables fast and efficient data exchange between the chip and the host device.
• Low power consumption: The 93LC86T-I/SN is designed to operate with minimal power requirements, making it suitable for battery-powered devices.
• Hardware write protection: The /WP pin allows for write protection, preventing accidental modification of stored data.
• Reliable data retention: The EEPROM technology used in this chip ensures long-term data storage without degradation.

Advantages and Disadvantages

Advantages

• Non-volatile memory: Retains data even during power loss.
• Easy programmability: Allows for convenient modification of stored data.
• Compact form factor: Suitable for space-constrained electronic systems.
• High endurance: Can withstand a large number of write cycles.

Disadvantages

• Limited storage capacity: With only 8 kilobits, it may not be sufficient for applications requiring extensive data storage.
• Relatively slower access speed compared to other memory technologies.

Working Principles

The 93LC86T-I/SN utilizes EEPROM technology, which employs floating gate transistors to store and retrieve digital information. It operates based on the principle of injecting or removing charge from the floating gate, altering its electrical characteristics to represent binary data.

During write operations, an electric field is applied to the floating gate, allowing electrons to tunnel through a thin oxide layer and become trapped, thus modifying the transistor's threshold voltage. This change in threshold voltage represents the stored data.

During read operations, the threshold voltage of the transistor is measured to determine the stored data. The chip's internal circuitry ensures accurate reading and writing of data.

Detailed Application Field Plans

The 93LC86T-I/SN finds applications in various fields, including:

1. Microcontrollers: Used for storing firmware, configuration settings, and calibration data.
2. Computers: Employed in BIOS chips, expansion cards, and other peripheral devices.
3. Consumer Electronics: Integrated into smart TVs, set-top boxes, and audio/video equipment for data storage purposes.
4. Automotive: Utilized in electronic control units (ECUs) for storing critical vehicle parameters and configurations.
5. Industrial Automation: Incorporated into programmable logic controllers (PLCs) and industrial control systems for data storage and retrieval.

Detailed and Complete Alternative Models

• 93LC66B-I/SN: Similar to the 93LC86T-I/SN but with a smaller memory capacity of 4 kilobits.
• 93LC1024-I