93LC66AT/ST

Product Overview

The 93LC66AT/ST is a serial electrically erasable programmable read-only memory (EEPROM) device. It falls under the category of non-volatile memory and is commonly used for storing small amounts of data in various electronic devices. The 93LC66AT/ST is known for its compact package, low power consumption, and high reliability, making it suitable for a wide range of applications.

Basic Information

• Category: Non-volatile Memory
• Use: Data Storage
• Characteristics: Compact, Low Power Consumption, High Reliability
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Serial Electrically Erasable Programmable Read-Only Memory
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Memory Size: 4 Kbits
• Interface: SPI (Serial Peripheral Interface)
• Operating Voltage: 2.5V - 5.5V
• Operating Temperature: -40°C to +85°C
• Write Cycle Endurance: 1,000,000 cycles
• Data Retention: 200 years

Detailed Pin Configuration

1. Chip Select (CS)
2. Serial Data Input (DI)
3. Serial Data Output (DO)
4. Serial Clock (SCK)
5. VSS (Ground)
6. NC (No Connection)
7. NC (No Connection)
8. VCC (Power)

Functional Features

• Byte Write and Page Write Operation
• Self-Timed Write Cycle
• Partial Page Writes Allowed
• Sequential Reads
• Hardware and Software Protection
• Schmitt Trigger Inputs

Advantages and Disadvantages

Advantages

• Low Power Consumption
• Compact Package
• High Reliability
• Wide Operating Voltage Range
• Long Data Retention Period

Disadvantages

• Limited Memory Size
• Slower Write Speed Compared to Some Alternatives

Working Principles

The 93LC66AT/ST operates by using an SPI interface to communicate with a microcontroller or other host device. When data needs to be stored or retrieved, the device follows a specific protocol to write or read information from its memory cells. The EEPROM technology allows for non-volatile storage, meaning the data remains intact even when the power is removed.

Detailed Application Field Plans

The 93LC66AT/ST is commonly used in embedded systems, IoT devices, automotive electronics, and consumer electronics. Its small form factor and low power consumption make it ideal for applications where space and energy efficiency are crucial. Specific use cases include storing configuration parameters, calibration data, and system logs.

Detailed and Complete Alternative Models

• AT24C04: Similar 4 Kbit EEPROM with I2C interface
• M24M02: Larger 2 Mbit EEPROM with SPI interface
• CAT24C04: 4 Kbit EEPROM with I2C interface and additional features

In conclusion, the 93LC66AT/ST is a versatile EEPROM device with a compact package and low power consumption, making it suitable for various data storage applications in electronic systems.

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