25LC640AT-M/SN

Product Overview

Category: Integrated Circuits (ICs)

Use: The 25LC640AT-M/SN is a serial EEPROM (Electrically Erasable Programmable Read-Only Memory) that provides non-volatile storage for various electronic devices. It is commonly used in applications where small amounts of data need to be stored and retrieved.

Characteristics: - Low power consumption - High-speed SPI (Serial Peripheral Interface) communication - Wide operating voltage range - Small form factor - Durable and reliable

Package: The 25LC640AT-M/SN is available in an 8-pin SOIC (Small Outline Integrated Circuit) package, which ensures easy integration into circuit boards.

Essence: This EEPROM chip allows for the storage and retrieval of data even when the power supply is disconnected. It offers a reliable and efficient solution for storing critical information in electronic systems.

Packaging/Quantity: The 25LC640AT-M/SN is typically sold in reels containing 2,000 units per reel.

Specifications

• Memory Size: 64 kilobits (8 kilobytes)
• Operating Voltage Range: 1.8V to 5.5V
• Communication Interface: SPI (Serial Peripheral Interface)
• Write Endurance: 1,000,000 cycles
• Data Retention: 200 years
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 25LC640AT-M/SN has the following pin configuration:

1. Chip Select (/CS)
2. Serial Clock (SCK)
3. Serial Data Input/Output (SI/O)
4. Ground (GND)
5. Write Protect (/WP)
6. Hold (/HOLD)
7. VCC (Power Supply)
8. Not Connected (NC)

Functional Features

• Byte-level read and write operations
• Sequential read mode for faster data retrieval
• Software and hardware write protection options
• Deep power-down mode for ultra-low power consumption
• Self-timed programming cycle for easy integration into systems

Advantages and Disadvantages

Advantages: - Low power consumption makes it suitable for battery-powered devices - High-speed SPI communication enables fast data transfer - Wide operating voltage range allows for compatibility with various systems - Small form factor saves space on circuit boards - Durable and reliable, ensuring long-term data storage

Disadvantages: - Limited storage capacity (64 kilobits) compared to other memory technologies - Requires an external microcontroller or host device for data management

Working Principles

The 25LC640AT-M/SN operates based on the principles of EEPROM technology. It uses a floating gate transistor structure to store and retrieve data. When data is written, an electric charge is trapped in the floating gate, altering the transistor's behavior. This charge can be removed during the erase cycle, allowing the transistor to return to its original state.

Detailed Application Field Plans

The 25LC640AT-M/SN finds applications in various electronic devices and systems, including but not limited to: - Consumer electronics (e.g., smart TVs, set-top boxes) - Automotive electronics (e.g., infotainment systems, engine control units) - Industrial automation (e.g., programmable logic controllers, sensors) - Medical devices (e.g., patient monitoring systems, diagnostic equipment) - Internet of Things (IoT) devices (e.g., smart home appliances, wearable devices)

Detailed and Complete Alternative Models

• 25AA640A-I/ST: Similar specifications and functionality, available in a different package (8-pin TSSOP)
• 25LC640A-I/ST: Similar specifications and functionality, available in a different package (8-pin TSSOP)
• 25LC640A-I/SN: Similar specifications and functionality, available in a different package (8-pin SOIC)

These alternative models offer similar features and can be used as substitutes for the 25LC640AT-M/SN depending on specific application requirements.

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