Encyclopedia Entry: 93C46BT-I/ST

Product Overview

Category

The 93C46BT-I/ST 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, automotive systems, and consumer electronics.

Characteristics

• Non-volatile: The 93C46BT-I/ST retains stored data even when power is removed.
• Electrically erasable: The chip allows for easy modification and erasure of stored data through electrical signals.
• Small form factor: The compact size of the chip makes it suitable for integration into space-constrained electronic devices.

Package

The 93C46BT-I/ST is available in a small outline transistor (SOT-23) package. This package offers a compact footprint and facilitates surface mount assembly.

Essence

The essence of the 93C46BT-I/ST lies in its ability to provide reliable and non-volatile data storage in a compact form factor, making it an essential component in many electronic devices.

Packaging/Quantity

The 93C46BT-I/ST is typically supplied in reels or tubes, with each reel or tube containing a specific quantity of chips. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Memory capacity: 1 kilobit (128 bytes)
• Operating voltage: 2.5V to 5.5V
• Operating temperature range: -40°C to +85°C
• Data retention: Up to 200 years
• Write endurance: 1 million write cycles

Detailed Pin Configuration

The 93C46BT-I/ST features an 8-pin configuration:

1. Chip Select (/CS): Enables or disables the chip for communication.
2. Serial Clock (CLK): Provides the clock signal for data transfer.
3. Data Input/Output (DIO): Bi-directional pin for serial data transfer.
4. Write Enable (/W): Controls write operations to the chip.
5. VCC: Power supply voltage input.
6. Ground (GND): Common ground reference.
7. NC: No connection (unused pin).
8. NC: No connection (unused pin).

Functional Features

• Serial communication: The 93C46BT-I/ST utilizes a simple serial interface for data read and write operations.
• Self-timed programming: The chip incorporates internal timing mechanisms, eliminating the need for external timing signals.
• Software protection: Write protection features ensure data integrity by preventing accidental modifications.
• High reliability: The EEPROM technology used in this chip offers excellent endurance and data retention characteristics.

Advantages and Disadvantages

Advantages

• Compact size allows for easy integration into space-constrained devices.
• Non-volatile memory ensures data persistence even during power loss.
• High endurance and long data retention period.
• Simple serial interface simplifies integration and reduces complexity.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Relatively slower read and write speeds compared to volatile memory types.
• Higher cost per bit compared to some alternative memory solutions.

Working Principles

The 93C46BT-I/ST operates based on the principles of EEPROM technology. It utilizes a grid of floating-gate transistors to store and retrieve data. When data needs to be written, an electrical charge is applied to specific transistors, altering their threshold voltage and storing the desired information. To read the stored data, the transistor's threshold voltage is measured, allowing the retrieval of the stored information.

Detailed Application Field Plans

The 93C46BT-I/ST finds applications in various fields, including:

1. Microcontrollers: Used for storing critical configuration data and firmware updates.
2. Automotive systems: Employed in electronic control units (ECUs) for storing calibration data and fault codes.
3. Consumer electronics: Integrated into devices like smart TVs, set-top boxes, and gaming consoles for storing user preferences and settings.

Detailed and Complete Alternative Models

1. 93C46B: Similar to the 93C46BT-I/ST but available in a different package (DIP-8).
2. 93C66B: Offers higher memory capacity (4 kilobits) while maintaining similar characteristics to the 93C46BT-I/ST.
3. 93C86B: Provides even higher memory capacity (16 kilobits) with extended temperature range capabilities.

These alternative models offer varying memory capacities and package options, allowing users to choose the most suitable option for their specific requirements.

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