Encyclopedia Entry: 93C46BT-I/SN

Product Overview

Category

The 93C46BT-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, automotive systems, consumer electronics, and industrial applications.

Characteristics

• Non-volatile: Retains stored data even when power is removed.
• Electrically erasable: Allows for easy modification of stored data.
• Programmable: Can be written and rewritten multiple times.
• Small form factor: Compact size suitable for integration into various electronic devices.

Package

The 93C46BT-I/SN is available in a small outline integrated circuit (SOIC) package. This package type provides ease of handling and compatibility with automated assembly processes.

Essence

The essence of the 93C46BT-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

This chip is typically supplied in tape and reel packaging, which facilitates efficient manufacturing and assembly processes. The quantity per reel may vary depending on the supplier, but a common quantity is 2500 units per reel.

Specifications

• Memory capacity: 1 kilobit (128 bytes)
• 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 write cycles

Detailed Pin Configuration

The 93C46BT-I/SN 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): Provides the timing for data transfer.
3. Serial Data Input (DI): Receives data to be written into the memory.
4. Serial Data Output (DO): Outputs data read from the memory.
5. Write Enable (/W): Controls the write operation.
6. VCC: Power supply voltage input.
7. Ground (GND): Common ground reference.
8. NC: No connection (unused pin).

Functional Features

• High-speed serial interface for efficient data transfer.
• Byte-level random access allows individual byte read and write operations.
• Self-timed programming eliminates the need for external programming signals.
• Built-in write protection prevents accidental modification of stored data.
• Low power consumption for energy-efficient operation.

Advantages and Disadvantages

Advantages

• Compact size and easy integration into various electronic devices.
• Non-volatile memory ensures data retention even during power loss.
• Electrically erasable and programmable for flexible data modification.
• High endurance and long data retention period.
• Cost-effective solution for non-volatile data storage.

Disadvantages

• Limited memory capacity compared to other EEPROM variants.
• Relatively slower write speed compared to some newer memory technologies.
• Susceptible to electromagnetic interference (EMI) due to its small form factor.

Working Principles

The 93C46BT-I/SN utilizes a combination of electrically controlled gates and floating gate transistors to store and retrieve digital information. The memory cells are organized in a matrix, with each cell capable of storing one bit of data. To write data, an electrical charge is applied to the floating gate, altering its threshold voltage. Reading data involves sensing the voltage level on the floating gate to determine the stored value.

Detailed Application Field Plans

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

1. Microcontrollers: Used for storing firmware, configuration data, and calibration parameters.
2. Automotive Systems: Employed for storing vehicle-specific settings, mileage data, and fault codes.
3. Consumer Electronics: Utilized in devices like smart TVs, set-top boxes, and gaming consoles for data storage.
4. Industrial Applications: Integrated into industrial control systems, sensors, and automation equipment for data logging and configuration storage.

Detailed and Complete Alternative Models

1. 93C46B: Similar to 93C46BT-I/SN but available in a different package (DIP-8).
2. 93C66B: Higher capacity variant with 4 kilobits (512 bytes) of memory.
3. 93C86B: Extended capacity variant with 16 kilobits (2 kilobytes) of memory.

These alternative models offer similar functionality but may differ in package type, memory capacity, or other specifications.

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