Encyclopedia Entry: 93C76B-I/SN

Product Overview

Category

The 93C76B-I/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, computers, and consumer electronics.

Characteristics

• Non-volatile: The 93C76B-I/SN retains stored data even when power is removed.
• Electrically erasable: The chip allows for easy modification and erasure of stored data through electrical signals.
• Programmable: Users can write and rewrite data onto the chip multiple times.
• Small form factor: The chip is compact and suitable for integration into space-constrained electronic devices.

Package and Quantity

The 93C76B-I/SN is available in a small outline integrated circuit (SOIC) package. It is typically sold in reels or tubes containing a specific quantity, such as 250 or 1000 units per package.

Specifications

• Memory capacity: 8 kilobits (1 kilobyte)
• Operating voltage: 2.5V to 5.5V
• Operating temperature range: -40°C to +85°C
• Data retention: Up to 200 years
• Write endurance: Minimum 1 million write cycles

Pin Configuration

The 93C76B-I/SN chip has a total of 8 pins, each serving a specific function. The pin configuration is as follows:

1. Chip Select (/CS): Enables or disables the chip for communication.
2. Serial Clock (CLK): Provides timing for data transfer.
3. Serial Data Input (DI): Receives data from the external device.
4. Serial Data Output (DO): Transmits data to the external device.
5. Write Enable (/W): Controls the write operation.
6. VCC: Power supply voltage input.
7. Ground (GND): Common ground reference.
8. Not Connected (NC): Unused pin.

Functional Features

• High-speed data transfer: The chip supports fast serial communication, allowing for efficient data transfer.
• Low power consumption: It operates at low power levels, making it suitable for battery-powered devices.
• Hardware and software protection: The 93C76B-I/SN offers various security features to protect stored data from unauthorized access or modification.
• Flexible interface options: It can be easily interfaced with microcontrollers and other digital devices using standard protocols.

Advantages and Disadvantages

Advantages

• Compact size enables integration into small electronic devices.
• Non-volatile memory ensures data retention even during power loss.
• Easy programmability allows for quick updates and modifications.
• High endurance ensures reliable and long-lasting data storage.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Relatively slower read and write speeds compared to volatile memory types.
• Susceptible to electromagnetic interference, requiring proper shielding in sensitive applications.

Working Principles

The 93C76B-I/SN utilizes a combination of electrically erasable and programmable memory technology. It stores data in a grid of memory cells, each capable of holding one bit of information. To write or modify data, an electrical charge is applied to specific memory cells, altering their state. Reading data involves detecting the state of each memory cell and converting it into usable information.

Application Field Plans

The 93C76B-I/SN finds application in various fields, including: 1. Automotive electronics: Used for storing critical vehicle data, such as mileage, configuration settings, and diagnostic information. 2. Industrial automation: Employed in programmable logic controllers (PLCs) to store program code, configuration data, and runtime parameters. 3. Consumer electronics: Integrated into devices like smart TVs, set-top boxes, and gaming consoles for storing user preferences, firmware updates, and encryption keys.

Alternative Models

For users seeking alternatives to the 93C76B-I/SN, the following models provide similar functionality: 1. 93C66B-I/SN: A lower-capacity variant with 4 kilobits of memory. 2. 93C86B-I/SN: A higher-capacity variant with 16 kilobits of memory. 3. 25AA080C-I/SN: An alternative EEPROM chip from a different manufacturer with 8 kilobits of memory.

In conclusion, the 93C76B-I/SN is a compact and versatile EEPROM chip that offers non-volatile data storage capabilities. Its high endurance, low power consumption, and flexible interface options make it suitable for various electronic applications. However, its limited capacity and slower read/write speeds should be considered when selecting an appropriate memory solution.