Encyclopedia Entry: 93LC46BT-I/ST

Product Overview

Category

The 93LC46BT-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, computers, and consumer electronics.

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 systems.

Package

The 93LC46BT-I/ST is available in a small Thin Small Outline Transistor (TSOT) package, which ensures efficient space utilization on printed circuit boards (PCBs).

Essence

The essence of the 93LC46BT-I/ST lies in its ability to provide reliable and flexible non-volatile data storage solutions for electronic devices.

Packaging/Quantity

This product is typically packaged 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 manufacturer's specifications.

Specifications

• Memory Capacity: 1 kilobit (128 bytes)
• Supply Voltage: 2.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Interface: Serial Peripheral Interface (SPI)
• Write Time: 3ms (typical)
• Data Retention: 200 years (typical)

Detailed Pin Configuration

The 93LC46BT-I/ST features an 8-pin configuration:

1. Chip Select (/CS): Enables communication with the chip when set to a low logic level.
2. Serial Clock (SCK): Provides the clock signal for data transfer.
3. Serial Data Input (SI): Receives data from the external device during write operations.
4. Serial Data Output (SO): Transmits data to the external device during read operations.
5. Write Protect (/WP): When set to a low logic level, prevents write operations.
6. VCC: Power supply voltage input.
7. Ground (GND): Common ground reference.
8. Hold (/HOLD): Pauses ongoing operations when set to a low logic level.

Functional Features

• Byte-level Read and Write Operations: Allows for efficient manipulation of individual bytes within the memory.
• Sequential Read Operation: Enables consecutive reading of multiple bytes without the need for repeated address selection.
• Software Protection: Provides write protection through software control, ensuring data integrity.
• Self-Timed Erase and Write Cycles: Simplifies programming by automatically managing timing requirements.

Advantages and Disadvantages

Advantages

• Compact size and low power consumption make it suitable for portable electronic devices.
• Easy integration into existing systems due to its standard SPI interface.
• High data retention and long-term reliability ensure data integrity.
• Flexible write protection options enhance security.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Relatively slower write times compared to some alternatives.
• Susceptible to electromagnetic interference, requiring proper shielding in sensitive applications.

Working Principles

The 93LC46BT-I/ST utilizes an electrically erasable floating-gate technology. It stores data by trapping electrical charges on a floating gate within the memory cell. These charges represent binary information (0s and 1s). The stored data can be modified by applying specific voltage levels to the memory cells, allowing electrons to tunnel onto or off the floating gate.

Detailed Application Field Plans

The 93LC46BT-I/ST finds application in various fields, including: - Microcontroller-based systems - Automotive electronics - Industrial control systems - Consumer electronics - Medical devices

Detailed and Complete Alternative Models

Some alternative models to the 93LC46BT-I/ST include: - 93LC46B-I/SN - 93LC46B-I/OT - 93LC46B-I/P - 93LC46B-I/MS

These alternatives offer similar functionality and specifications, providing options for different packaging and quantity requirements.

In conclusion, the 93LC46BT-I/ST is a compact and versatile EEPROM chip that offers reliable non-volatile data storage solutions. Its ease of integration, flexible write protection, and long-term reliability make it suitable for various electronic applications.