AT93C66-10PC

Product Overview

Category

AT93C66-10PC 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

• Electrically erasable: The AT93C66-10PC can be erased and reprogrammed electronically, making it convenient for updating stored data.
• Non-volatile: The stored data remains intact even when power is removed.
• High density: This chip offers a storage capacity of 4 kilobits (512 bytes).
• Low power consumption: The AT93C66-10PC operates efficiently with low power requirements.
• Fast access time: It provides quick access to stored data.

Package

The AT93C66-10PC comes in an 8-pin plastic dual in-line package (PDIP), which ensures easy integration into circuit boards.

Packaging/Quantity

This product is typically packaged in reels or tubes, containing a quantity of 250 units per package.

Specifications

• Memory capacity: 4 kilobits (512 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

Detailed Pin Configuration

The AT93C66-10PC has eight 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 (SI): Receives data from the external device.
4. Serial Data Output (SO): Transmits data to the external device.
5. Write Enable (/W): Controls the write operation.
6. VCC: Power supply voltage (2.5V to 5.5V).
7. Ground (GND): Common ground reference.
8. Not Used (NC): No connection.

Functional Features

• Sequential read and write operations: The AT93C66-10PC allows sequential access to memory locations for efficient data handling.
• Hardware and software protection: This chip provides mechanisms to protect stored data from unauthorized access or accidental modification.
• Self-timed programming cycle: The programming cycle is automatically controlled, eliminating the need for external timing signals.
• High-speed data transfer: The AT93C66-10PC supports fast data transfer rates, ensuring quick access to stored information.

Advantages and Disadvantages

Advantages

• Electrically erasable and reprogrammable, allowing for easy updates.
• Non-volatile memory ensures data retention even during power loss.
• Compact size and low power consumption make it suitable for various applications.
• High-density storage capacity accommodates a significant amount of data.
• Fast access time enhances overall system performance.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Relatively higher cost per bit compared to some alternative memory solutions.
• Susceptible to electromagnetic interference, requiring proper shielding in sensitive applications.

Working Principles

The AT93C66-10PC utilizes an EEPROM technology based on floating-gate transistors. It stores data by trapping electric charge within the floating gate, which alters the transistor's threshold voltage. This change in threshold voltage represents the binary state of each memory cell, allowing for data storage and retrieval.

During write operations, an electrical charge is applied to the floating gate, modifying the threshold voltage and storing the desired data. Reading data involves sensing the threshold voltage of each memory cell and converting it back into digital information.

Detailed Application Field Plans

The AT93C66-10PC finds applications in various fields, including:

1. Automotive electronics: Used for storing critical data in automotive control units, such as engine management systems and airbag modules.
2. Industrial automation: Employed in programmable logic controllers (PLCs) to store configuration settings and program code.
3. Consumer electronics: Integrated into devices like smart TVs, set-top boxes, and digital cameras for non-volatile data storage.
4. Medical devices: Utilized in medical equipment for storing patient records, calibration data, and firmware updates.
5. Communication systems: Incorporated into networking devices, routers, and modems for storing configuration parameters and firmware.

Detailed and Complete Alternative Models

1. AT24C02: A similar EEPROM chip with a capacity of 2 kilobits (256 bytes).
2. AT25DF321A: A flash memory chip with a capacity of 32 megabits (4 megabytes).
3. CAT24C256: An EEPROM chip with a capacity of 256 kilobits (32 kilobytes).

These alternative models offer different storage capacities