Encyclopedia Entry: 93LC76A-E/ST

Product Overview

Category

The 93LC76A-E/ST 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

• Non-volatile: The 93LC76A-E/ST retains stored data even when power is removed.
• Electrically erasable: The chip allows for easy modification and erasure of stored data.
• High storage capacity: This model offers a storage capacity of 8 kilobits (1 kilobyte).
• Low power consumption: The chip operates on low power, making it suitable for battery-powered devices.

Package

The 93LC76A-E/ST comes in an 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of the 93LC76A-E/ST lies in its ability to provide reliable and non-volatile data storage in a compact form factor.

Packaging/Quantity

This chip is typically packaged in reels or tubes, with each reel containing a quantity of 2500 units.

Specifications

• Storage Capacity: 8 kilobits (1 kilobyte)
• Operating Voltage: 2.5V - 5.5V
• Maximum Clock Frequency: 2 MHz
• Write Cycle Time: 5 ms (typical)
• Data Retention: 200 years (minimum)

Detailed Pin Configuration

The 93LC76A-E/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 (WE)
6. VCC (Power Supply)
7. Ground (GND)
8. Not Connected (NC)

Functional Features

• Sequential Read and Write Operations: The chip supports sequential read and write operations, allowing for efficient data transfer.
• Hardware Data Protection: The 93LC76A-E/ST includes built-in hardware protection mechanisms to prevent accidental data corruption.
• Self-Timed Programming: The chip features self-timed programming algorithms, eliminating the need for external timing control.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data retention even during power loss.
• Electrically erasable memory allows for easy modification of stored data.
• Compact form factor and low power consumption make it suitable for various electronic devices.

Disadvantages

• Limited storage capacity compared to other EEPROM chips.
• Relatively slower write cycle time compared to some competing models.

Working Principles

The 93LC76A-E/ST utilizes a combination of floating gate transistors and charge storage techniques to store and retrieve data. When data is written, charges are trapped in the floating gate, altering the transistor's behavior. During read operations, the trapped charges are sensed, allowing the retrieval of stored data.

Detailed Application Field Plans

The 93LC76A-E/ST finds applications in various fields, including:

1. Microcontrollers: Used for storing firmware, configuration settings, and calibration data.
2. Computers: Employed in BIOS chips and non-volatile memory modules.
3. Consumer Electronics: Integrated into devices like smart TVs, set-top boxes, and digital cameras for data storage purposes.

Detailed and Complete Alternative Models

1. 93LC66A-E/ST: Similar to the 93LC76A-E/ST but with a smaller storage capacity of 4 kilobits.
2. 93LC86A-E/ST: Offers a higher storage capacity of 16 kilobits, suitable for applications requiring more memory.

In conclusion, the 93LC76A-E/ST is an electrically erasable programmable read-only memory (EEPROM) chip that provides reliable non-volatile data storage. With its compact form factor, low power consumption, and sequential read/write operations, it finds applications in microcontrollers, computers, and consumer electronics. While it has a limited storage capacity compared to some alternatives, its advantages include non-volatility, easy data modification, and hardware data protection mechanisms.