AT93C46EN-SH-B

Product Overview

Category

AT93C46EN-SH-B belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

This chip is commonly used for non-volatile storage in various electronic devices, such as microcontrollers, automotive systems, consumer electronics, and industrial applications.

Characteristics

• Electrically erasable: The AT93C46EN-SH-B can be erased and reprogrammed electronically, making it convenient for data storage.
• Non-volatile: The stored data remains intact even when power is removed.
• Small package size: This chip comes in a compact package, allowing for space-efficient integration into electronic devices.
• High reliability: It offers excellent data retention and endurance characteristics, ensuring long-term performance.

Package and Quantity

The AT93C46EN-SH-B is available in a small outline integrated circuit (SOIC) package. It is typically sold in reels or tubes, with a quantity of 2500 units per reel.

Specifications

• Memory capacity: 1 kilobit (128 bytes)
• Operating voltage: 2.5V to 5.5V
• Operating temperature range: -40°C to +85°C
• Write cycle endurance: 1 million cycles
• Data retention: 100 years

Pin Configuration

The AT93C46EN-SH-B 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 (SCK): Provides the clock signal for data transfer.
3. Serial Data Input (DI): Receives data from the external device.
4. Serial Data Output (DO): Transmits data to the external device.
5. Write Enable (/W): Controls the write operation.
6. VCC: Power supply voltage.
7. Ground (GND): Common ground reference.
8. NC: No connection.

Functional Features

• Sequential read and write operations: The AT93C46EN-SH-B supports sequential access to memory locations, allowing for efficient data retrieval and storage.
• Hardware and software protection: It offers various protection mechanisms to prevent unauthorized access or accidental modification of stored data.
• Fast operation: With a high-speed clock, this chip ensures quick data transfer and processing.
• Low power consumption: The AT93C46EN-SH-B is designed to minimize power usage, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages

• Compact size enables integration into space-constrained electronic devices.
• High reliability ensures long-term data retention.
• Versatile application range in various industries.
• Efficient sequential access allows for optimized data handling.

Disadvantages

• Limited memory capacity compared to other EEPROM chips.
• Relatively slower write speed compared to some alternatives.

Working Principles

The AT93C46EN-SH-B utilizes an electrically erasable technology based on floating-gate transistors. When data needs to be written, the chip applies a high voltage to the selected memory cell, causing electrons to tunnel onto or off the floating gate. This process alters the threshold voltage of the transistor, representing the stored data as a binary value. Reading the data involves applying appropriate voltages and sensing the resulting current flow through the memory cell.

Detailed Application Field Plans

The AT93C46EN-SH-B finds applications in various fields, including: 1. Microcontrollers: Used for storing program code, configuration settings, and calibration data. 2. Automotive systems: Employed in electronic control units (ECUs) for storing vehicle-specific parameters and diagnostic information. 3. Consumer electronics: Integrated into devices like smart TVs, set-top boxes, and audio systems for storing user preferences and firmware updates. 4. Industrial applications: Utilized in industrial automation systems for data logging, configuration storage, and device identification.

Detailed and Complete Alternative Models

1. AT93C66EN-SH-B: Similar to AT93C46EN-SH-B but with a larger memory capacity of 4 kilobits (512 bytes).
2. AT24C02BN-SH-B: An alternative EEPROM chip with a capacity of 2 kilobits (256 bytes) and compatible pin configuration.
3. CAT24C16WI-GT3: Another option with a capacity of 16 kilobits (2 kilobytes) and extended temperature range.

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

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