Encyclopedia Entry: 93LC86B-E/MS

Product Overview

Category

The 93LC86B-E/MS 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, computers, and consumer electronics.

Characteristics

• Electrically erasable: The 93LC86B-E/MS allows for easy erasure and reprogramming of data.
• Non-volatile: The stored data remains intact even when power is removed.
• Small package size: The chip comes in a miniature surface-mount package, making it suitable for compact electronic devices.
• High storage capacity: The 93LC86B-E/MS has a storage capacity of 8 kilobits (1 kilobyte).

Package and Quantity

The 93LC86B-E/MS is available in a standard 8-pin small outline integrated circuit (SOIC) package. It is typically sold in reels containing multiple units.

Specifications

• Memory capacity: 8 kilobits (1024 bytes)
• Operating voltage: 2.5V to 5.5V
• Maximum clock frequency: 2 MHz
• Write endurance: 1 million cycles
• Data retention: 200 years

Pin Configuration

The 93LC86B-E/MS 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

• Byte-level Read/Write: The chip allows individual bytes to be read from or written to.
• Sequential Read: It supports sequential reading of multiple bytes.
• Self-timed Programming: The programming process does not require external timing signals.
• Software Protection: The 93LC86B-E/MS provides software protection against unauthorized write operations.

Advantages and Disadvantages

Advantages

• Easy data erasure and reprogramming
• Compact package size
• High storage capacity
• Wide operating voltage range

Disadvantages

• Relatively low clock frequency compared to some other EEPROM chips
• Limited write endurance (1 million cycles)

Working Principles

The 93LC86B-E/MS utilizes a floating-gate transistor structure to store data. When a byte is programmed, charge is trapped in the floating gate, representing a logical "1." Erasing the byte removes the charge, resulting in a logical "0." The chip uses a combination of electrical signals and internal circuitry to perform read, write, and erase operations.

Application Field Plans

The 93LC86B-E/MS finds applications in various fields, including: 1. Microcontroller-based systems 2. Embedded systems 3. Automotive electronics 4. Industrial control systems 5. Consumer electronics

Alternative Models

Other alternative models with similar functionality to the 93LC86B-E/MS include: - 93LC66B-E/MS - 93LC56B-E/MS - 93LC46B-E/MS

These models offer different storage capacities while maintaining compatibility with the same pin configuration and functional features.

In conclusion, the 93LC86B-E/MS is an electrically erasable programmable read-only memory chip that offers high storage capacity, compact size, and easy reprogramming. While it has limitations in terms of write endurance and clock frequency, it finds wide application in various electronic devices and can be substituted with alternative models for different storage requirements.