Encyclopedia Entry: 93LC76-I/SN

Product Overview

Category

The 93LC76-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: The 93LC76-I/SN retains stored data even when power is removed.
• Electrically erasable: Data can be erased and reprogrammed electronically, without requiring physical removal of the chip.
• Small form factor: The chip is compact and suitable for integration into space-constrained devices.
• Low power consumption: The 93LC76-I/SN operates efficiently, minimizing energy usage.

Package

The 93LC76-I/SN is available in a small outline integrated circuit (SOIC) package, which provides ease of handling and compatibility with standard PCB manufacturing processes.

Essence

The essence of the 93LC76-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

The 93LC76-I/SN is typically packaged in reels or tubes, with quantities varying based on customer requirements. Common packaging options include 2500 units per reel or 100 units per tube.

Specifications

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

Detailed Pin Configuration

The 93LC76-I/SN features an 8-pin configuration:

1. Chip Select (/CS): Enables communication with the chip when set to a low logic level.
2. Serial Clock (CLK): Provides timing for data transfer between the chip and the microcontroller.
3. Serial Data Input (DI): Transfers data from the microcontroller to the chip during write operations.
4. Serial Data Output (DO): Sends data from the chip to the microcontroller during read operations.
5. Write Protect (/WP): When set to a low logic level, prevents write operations.
6. VCC: Power supply input (+2.5V to +5.5V).
7. Ground (GND): Common ground reference.
8. Not Connected (NC): No electrical connection.

Functional Features

• Byte-level Read/Write: The 93LC76-I/SN allows individual bytes of data to be read from or written to the memory array.
• Sequential Read: Multiple bytes can be read in sequence without requiring repeated address input.
• Self-timed Programming: The chip automatically manages programming timing, simplifying the write process.
• Software Protection: The write protect feature ensures data integrity by preventing accidental writes.

Advantages and Disadvantages

Advantages

• Non-volatile storage: Data remains intact even in the absence of power.
• Electrically erasable: Allows for easy reprogramming without physical intervention.
• Compact form factor: Suitable for integration into space-constrained devices.
• Low power consumption: Efficient operation minimizes energy usage.

Disadvantages

• Limited storage capacity: The 93LC76-I/SN has a relatively small memory capacity compared to other EEPROM chips.
• Limited endurance: The chip has a finite number of write cycles before it may become unreliable.

Working Principles

The 93LC76-I/SN utilizes a floating gate transistor structure to store and retrieve digital information. When data is written, charge is trapped in the floating gate, altering the transistor's behavior. This charge can be removed during erasure, allowing the transistor to return to its original state. The stored charge represents the binary information that can be read by the microcontroller.

Detailed Application Field Plans

The 93LC76-I/SN finds applications in various fields, including: 1. Automotive electronics: Used for storing configuration data, fault codes, and calibration values in automotive control units. 2. Industrial automation: Enables non-volatile storage of critical parameters and settings in programmable logic controllers (PLCs). 3. Consumer electronics: Utilized in devices such as smart TVs, set-top boxes, and gaming consoles for firmware storage and data logging.

Detailed and Complete Alternative Models

• 93LC66B-I/SN: Similar to the 93LC76-I/SN but with a smaller memory capacity of 4 kilobits.
• 93LC86C-I/SN: Offers a higher memory capacity of 16 kilobits compared to the 93LC76-I/SN.

In conclusion, the 93LC76-I/SN is an electrically erasable programmable read-only memory chip that provides reliable non-v