AT93C66B-XHM-T

Product Overview

Category

AT93C66B-XHM-T 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, and consumer electronics.

Characteristics

• Electrically erasable: The AT93C66B-XHM-T can be erased and reprogrammed electronically, making it convenient for data storage.
• Non-volatile: The stored data remains even when power is removed.
• High density: This chip offers a high storage capacity, allowing for the storage of large amounts of data.
• Low power consumption: The AT93C66B-XHM-T operates efficiently, consuming minimal power during read and write operations.

Package

The AT93C66B-XHM-T is available in a compact 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of this chip lies in its ability to provide reliable and non-volatile data storage in a small form factor.

Packaging/Quantity

The AT93C66B-XHM-T is typically packaged in reels containing 2500 units per reel.

Specifications

• Memory Size: 4Kbits (512 x 8 bits)
• Operating Voltage: 2.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Time: 5ms (maximum)
• Data Retention: 200 years (minimum)

Detailed Pin Configuration

The AT93C66B-XHM-T has the following pin configuration:

1. Chip Select (/CS)
2. Serial Clock (SCK)
3. Serial Data Input (SI)
4. Serial Data Output (SO)
5. Write Enable (/W)
6. VCC (Power Supply)
7. Ground (GND)
8. Not Connected (NC)

Functional Features

• Sequential Read and Write Operations: The chip supports sequential read and write operations, allowing for efficient data transfer.
• Hardware Protection: The AT93C66B-XHM-T features a write protection mechanism to prevent accidental modification of stored data.
• Self-Timed Programming Cycle: The chip incorporates a self-timed programming cycle, eliminating the need for external timing control.

Advantages and Disadvantages

Advantages

• Compact size and high storage capacity
• Low power consumption
• Reliable and non-volatile data storage
• Sequential read and write operations for efficient data transfer

Disadvantages

• Limited memory size compared to other EEPROM chips
• Relatively slower write time compared to some alternatives

Working Principles

The AT93C66B-XHM-T utilizes an electrically erasable floating-gate technology. It stores data by trapping charges in a floating gate, which can be erased or programmed using electrical signals. The chip operates based on a serial communication protocol, where data is transferred bit by bit through the SI and SO pins.

Detailed Application Field Plans

The AT93C66B-XHM-T finds applications in various fields, including: 1. Microcontrollers: Used for storing program code and configuration data. 2. Automotive Systems: Employed for storing vehicle settings, calibration data, and fault codes. 3. Consumer Electronics: Utilized for storing user preferences, device settings, and firmware updates.

Detailed and Complete Alternative Models

1. AT93C46B-XHM-T: Similar to AT93C66B-XHM-T but with a smaller memory size of 2Kbits.
2. AT93C86B-XHM-T: Similar to AT93C66B-XHM-T but with a larger memory size of 16Kbits.
3. AT25C256-XHM-T: An alternative EEPROM chip with a higher memory size of 32Kbits.

These alternative models provide options with varying memory sizes to suit different application requirements.

In conclusion, the AT93C66B-XHM-T is a compact and reliable EEPROM chip that offers non-volatile data storage for various electronic devices. Its high density, low power consumption, and sequential read/write operations make it suitable for a wide range of applications. However, its limited memory size and relatively slower write time should be considered when choosing an EEPROM chip for specific projects.