Encyclopedia Entry: 93LC76T/SN

Product Overview

Category

The 93LC76T/SN belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

This product is primarily used for non-volatile data storage in various electronic devices, such as microcontrollers, computers, and consumer electronics.

Characteristics

• Non-volatile: The 93LC76T/SN retains stored data even when power is disconnected.
• Electrically erasable: Data can be erased and reprogrammed electronically, eliminating the need for physical removal or replacement.
• High storage capacity: The chip offers a storage capacity of 8 kilobits (1 kilobyte).
• Low power consumption: The 93LC76T/SN operates efficiently, consuming minimal power during read and write operations.

Package and Quantity

The 93LC76T/SN is available in a compact surface-mount package. Each package contains a single EEPROM chip.

Specifications

• Storage Capacity: 8 kilobits (1 kilobyte)
• Operating Voltage: 2.5V - 5.5V
• Operating Temperature Range: -40°C to +85°C
• Interface: Serial Peripheral Interface (SPI)
• Write Time: 3ms (typical)
• Data Retention: Up to 200 years

Pin Configuration

The 93LC76T/SN features an 8-pin configuration with the following pin assignments:

| Pin Number | Pin Name | Function | |------------|----------|----------| | 1 | CS | Chip Select | | 2 | DO | Data Output | | 3 | WDI | Write Disable Input | | 4 | GND | Ground | | 5 | DI | Data Input | | 6 | CLK | Clock Input | | 7 | VCC | Power Supply | | 8 | HOLD | Hold Input |

Functional Features

• Sequential Read: The chip allows sequential reading of stored data, enabling efficient retrieval.
• Byte and Page Write: Data can be written in individual bytes or entire pages, providing flexibility in programming.
• Software Protection: The 93LC76T/SN offers software protection mechanisms to prevent unauthorized access or modification of stored data.
• Self-Timed Programming: The chip automatically manages the timing of write and erase operations, simplifying the programming process.

Advantages

• Compact Size: The small form factor of the 93LC76T/SN makes it suitable for space-constrained applications.
• High Reliability: With a long data retention period and robust design, this EEPROM chip ensures reliable data storage.
• Low Power Consumption: The chip's efficient operation minimizes power consumption, extending battery life in portable devices.
• Easy Integration: The serial interface and standard pin configuration facilitate seamless integration into various electronic systems.

Disadvantages

• Limited Storage Capacity: The 93LC76T/SN's 8-kilobit capacity may not be sufficient for applications requiring extensive data storage.
• Slower Write Speed: Compared to other memory technologies, EEPROMs generally have slower write times, which may impact performance in certain applications.

Working Principles

The 93LC76T/SN utilizes an array of floating-gate transistors to store data. When writing, an electrical charge is applied to specific transistors, altering their threshold voltage and storing the desired information. Reading involves sensing the threshold voltage of each transistor to retrieve the stored data.

Application Field Plans

The 93LC76T/SN finds application in various fields, including: 1. Microcontrollers: Used for storing firmware, configuration settings, and calibration data. 2. Automotive Electronics: Employed in vehicle control units for storing critical information, such as mileage and diagnostic codes. 3. Industrial Automation: Used in programmable logic controllers (PLCs) to store program instructions and configuration parameters. 4. Consumer Electronics: Found in devices like smart TVs, set-top boxes, and gaming consoles for storing user preferences and settings.

Alternative Models

1. 93LC66B/SN: A similar EEPROM chip with a smaller storage capacity of 4 kilobits.
2. 93LC1024/SN: Offers a higher storage capacity of 128 kilobits, suitable for applications requiring more extensive data storage.

In conclusion, the 93LC76T/SN is a compact and reliable EEPROM chip that provides non-volatile data storage for various electronic devices. Its high reliability, low power consumption, and easy integration make it a popular choice in microcontrollers, automotive electronics, industrial automation, and consumer electronics.

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