Encyclopedia Entry: 93AA66AT-I/SN

Product Information Overview

Category: Integrated Circuit (IC)

Use: Data Storage and Retrieval

Characteristics: - Non-volatile memory - Serial EEPROM (Electrically Erasable Programmable Read-Only Memory) - 4K-bit capacity - Low power consumption - High reliability - Small form factor

Package: SOIC (Small Outline Integrated Circuit)

Essence: The 93AA66AT-I/SN is a serial EEPROM IC that provides non-volatile storage for small amounts of data. It is commonly used in various electronic devices for storing configuration settings, calibration data, or other critical information.

Packaging/Quantity: The 93AA66AT-I/SN is typically sold in reels containing 2,500 units per reel.

Specifications

• Memory Capacity: 4K bits (512 bytes)
• Interface: Serial I2C (Inter-Integrated Circuit)
• Operating Voltage: 1.8V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Endurance: 1 million cycles
• Data Retention: 200 years

Detailed Pin Configuration

The 93AA66AT-I/SN has 8 pins arranged as follows:

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| | | 1 2 3 4 | | | | 8 7 6 5 | |_______________| ```

Pin Description: 1. Chip Select (CS): Used to enable/disable the device. 2. Serial Clock (SCK): Provides the clock signal for data transfer. 3. Serial Data Input (SDI): Used to input data into the device. 4. Ground (GND): Connected to the ground reference. 5. Serial Data Output (SDO): Outputs data from the device. 6. Write Protect (WP): Used to protect the memory from being written. 7. VCC: Power supply voltage input. 8. Not Connected (NC): No connection required.

Functional Features

• Byte and Page Write Operations: Allows individual byte or multiple bytes to be written at once.
• Sequential Read Operation: Enables sequential reading of data stored in memory.
• Software Write Protection: Provides a write protection mechanism to prevent accidental modification of stored data.
• Self-Timed Erase/Write Cycle: Automatically manages the erase/write cycle timing, simplifying the programming process.
• Hardware Write Protection: Supports hardware-based write protection using the WP pin.

Advantages and Disadvantages

Advantages: - Non-volatile storage ensures data retention even when power is lost. - Small form factor allows for integration into compact electronic devices. - Low power consumption extends battery life in portable applications. - High reliability with a long data retention period and high write endurance.

Disadvantages: - Limited storage capacity compared to other memory technologies. - Slower write and read speeds compared to volatile memory types. - Vulnerable to electromagnetic interference (EMI) due to its small size.

Working Principles

The 93AA66AT-I/SN utilizes EEPROM technology to store and retrieve data. It employs an I2C interface for communication with the host microcontroller. The chip select (CS), serial clock (SCK), and serial data (SDI/SDO) lines are used to control data transfer between the device and the microcontroller.

During write operations, the desired memory address is selected, and the data to be written is sent through the SDI line. The device internally manages the erase and write cycles, ensuring data integrity and reliability. Reading data involves selecting the memory address and receiving the data through the SDO line.

Detailed Application Field Plans

The 93AA66AT-I/SN is widely used in various electronic devices that require non-volatile storage, such as: - Consumer electronics (e.g., TVs, set-top boxes, remote controls) - Automotive systems (e.g., engine control units, infotainment systems) - Industrial equipment (e.g., sensors, meters, control modules) - Medical devices (e.g., patient monitors, diagnostic equipment) - Smart home devices (e.g., smart locks, thermostats, lighting systems)

Detailed and Complete Alternative Models

Some alternative models to the 93AA66AT-I/SN include: - 24LC04B: 4K-bit I2C Serial EEPROM by Microchip Technology Inc. - CAT24C04: 4K-bit I2C Serial EEPROM by ON Semiconductor - AT24C04: 4K-bit I2C Serial EEPROM by Atmel Corporation - M24C04: 4K-bit I2C Serial EEPROM by STMicroelectronics

These alternative models offer similar functionality and can be used as replacements depending