Encyclopedia Entry: 93LC56CT-I/SN

Product Overview

Category

The 93LC56CT-I/SN belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

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

Characteristics

• Electrically erasable: The 93LC56CT-I/SN allows for easy erasure and reprogramming of data without requiring physical removal.
• Non-volatile: The stored data remains intact even when power is disconnected.
• Compact package: The chip is available in a small surface-mount package, making it suitable for space-constrained applications.
• High endurance: It can withstand a large number of erase/write cycles, ensuring long-term reliability.

Package and Quantity

The 93LC56CT-I/SN is typically packaged in a small outline integrated circuit (SOIC) package. It is supplied in reels or tubes, with quantities varying depending on the manufacturer's specifications.

Specifications

• Memory capacity: 2 kilobits (256 x 8 bits)
• Supply 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 cycles

Pin Configuration

The 93LC56CT-I/SN chip has a total of 8 pins, each serving a specific function:

1. Chip Select (/CS): Enables or disables the chip for communication.
2. Serial Clock (CLK): Controls the timing of data transfer.
3. Serial Data Input (DI): Receives data during write operations.
4. Serial Data Output (DO): Outputs data during read operations.
5. Write Protect (/WP): Allows protection against accidental write operations.
6. VCC: Power supply input (+2.5V to +5.5V).
7. Ground (GND): Common ground reference.
8. Hold (/HOLD): Suspends ongoing operations temporarily.

Functional Features

• Sequential read and write operations: The chip allows for efficient reading and writing of data in a sequential manner.
• Hardware and software protection: Write Protect (/WP) pin and software commands provide options to protect the stored data from accidental modifications.
• Self-timed programming cycle: The chip automatically manages the timing of erase and write operations, simplifying the interface requirements.
• High-speed operation: The 93LC56CT-I/SN supports fast data transfer rates, enabling quick access to stored information.

Advantages and Disadvantages

Advantages

• Compact size and surface-mount package make it suitable for space-constrained applications.
• Electrically erasable nature allows for easy reprogramming without physical removal.
• High endurance ensures long-term reliability.
• Hardware and software protection features enhance data security.

Disadvantages

• Limited memory capacity compared to other EEPROM chips.
• Relatively higher cost per kilobit compared to larger capacity alternatives.

Working Principles

The 93LC56CT-I/SN utilizes a combination of electrically controlled gates and floating gate transistors to store and retrieve data. When data is written, an electrical charge is applied to specific memory cells, altering their state. During read operations, the stored charges are sensed and converted back into digital data.

Application Field Plans

The 93LC56CT-I/SN finds application in various fields, including: 1. Microcontroller-based systems requiring non-volatile memory storage. 2. Computer motherboards for storing system configuration data. 3. Consumer electronics like smart TVs, set-top boxes, and gaming consoles for firmware storage. 4. Automotive electronics for storing critical data like calibration settings and vehicle parameters.

Alternative Models

For those seeking alternatives to the 93LC56CT-I/SN, the following EEPROM chips can be considered: 1. 24LC256: Offers a larger memory capacity of 32 kilobits. 2. AT24C02: Provides a lower-cost option with a capacity of 2 kilobits. 3. CAT24C01: Similar capacity and features but operates at lower voltages (1.8V to 5.5V).

In conclusion, the 93LC56CT-I/SN is a compact and reliable EEPROM chip that offers electrically erasable non-volatile memory storage. Its high endurance, hardware/software protection features, and sequential operation make it suitable for various applications in microcontroller-based systems, computers, consumer electronics, and automotive electronics.