AT93C66A-10SU-2.7

Overview

Product Category

AT93C66A-10SU-2.7 belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

The AT93C66A-10SU-2.7 chip is primarily used for non-volatile storage of data in various electronic devices, such as microcontrollers, embedded systems, and consumer electronics.

Characteristics

• Non-volatile: The stored data remains intact even when power is removed.
• Electrically erasable: The chip allows for easy modification and erasure of stored data.
• Programmable: Users can write and rewrite data to the chip multiple times.
• Small form factor: The chip is compact and suitable for integration into space-constrained devices.
• Low power consumption: The AT93C66A-10SU-2.7 operates efficiently, minimizing energy consumption.

Package and Quantity

The AT93C66A-10SU-2.7 is available in a surface-mount SOIC-8 package. It is typically sold in reels containing a quantity of 2500 units.

Specifications

• Operating Voltage: 2.7V - 5.5V
• Memory Size: 4Kbits (512 x 8 bits)
• Organization: 64 pages of 8 bytes each
• Write Time: 5ms (typical)
• Data Retention: 100 years (minimum)
• Endurance: 1 million write cycles (minimum)

Pin Configuration

The AT93C66A-10SU-2.7 chip has eight pins arranged as follows:

┌───┬───┐ │1 └─┬─┘ │2 ┌─┴─┐ │3 ─┘ │ │4 │ │5 │ │6 │ │7 │ └─────────┘

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 Protect (/WP): Controls write protection of the memory.
6. VCC: Power supply voltage.
7. Ground (GND): Common ground reference.
8. NC: No connection.

Functional Features

• High-speed serial interface for efficient data transfer.
• Byte-level random access allows for easy modification of specific data.
• Built-in write protection mechanism prevents accidental data corruption.
• Low power consumption extends battery life in portable devices.
• Wide operating voltage range ensures compatibility with various systems.

Advantages and Disadvantages

Advantages

• Compact size and surface-mount package enable integration into small devices.
• Non-volatile memory ensures data retention even during power loss.
• Electrically erasable and programmable nature allows for flexible data storage.
• High endurance and long data retention period make it reliable for long-term use.

Disadvantages

• Limited memory size may not be sufficient for certain applications.
• Relatively slower write time compared to other memory technologies.
• Vulnerable to electromagnetic interference due to its small form factor.

Working Principles

The AT93C66A-10SU-2.7 operates based on the principles of EEPROM technology. It utilizes a floating gate transistor structure to store and retrieve data. When data is written, an electrical charge is trapped in the floating gate, altering the transistor's behavior. This charge can be removed during the erasure process, allowing for data modification. The chip's internal circuitry manages the read, write, and erase operations, ensuring reliable data storage and retrieval.

Application Field Plans

The AT93C66A-10SU-2.7 finds applications in various fields, including:

1. Automotive Electronics: Used for storing vehicle configuration data, mileage records, and diagnostic information.
2. Industrial Control Systems: Enables non-volatile storage of critical parameters, calibration data, and system configurations.
3. Consumer Electronics: Utilized in devices like smart TVs, set-top boxes, and gaming consoles for firmware storage and customization.
4. Medical Devices: Stores patient data, device settings, and firmware updates in medical equipment such as monitors and infusion pumps.
5. Internet of Things (IoT): Supports data storage requirements in IoT devices, including sensors, smart meters, and home automation systems.

Alternative Models

Several alternative models to the AT93C66A-10SU-2.7 are available in the market, offering similar functionality and compatibility. Some notable alternatives include:

1. AT24C64 - 64