25LC320AT-I/ST

Product Overview

Category: Integrated Circuits (ICs)

Use: Non-volatile Memory

Characteristics: - Low-power CMOS technology - 32K x 8-bit organization - SPI compatible serial interface - Self-timed erase and write cycles - Power-on/off data protection circuitry - 1,000,000 erase/write cycles guaranteed - 100-year data retention

Package: 8-pin SOIC (Small Outline Integrated Circuit)

Essence: The 25LC320AT-I/ST is a 32K-bit Serial Electrically Erasable Programmable Read-Only Memory (EEPROM) integrated circuit. It provides non-volatile storage of digital information in various electronic devices.

Packaging/Quantity: The 25LC320AT-I/ST is available in tape and reel packaging, with 2,500 units per reel.

Specifications

• Memory Size: 32K bits
• Organization: 4,096 bytes x 8 bits
• Interface: SPI (Serial Peripheral Interface)
• Supply Voltage: 2.5V - 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Time: 5ms typical
• Erase Time: 5ms typical
• Data Retention: 100 years

Pin Configuration

The 25LC320AT-I/ST has the following pin configuration:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | CS | Chip Select | | 2 | SCK | Serial Clock | | 3 | SI | Serial Input | | 4 | SO | Serial Output | | 5 | WP | Write Protect | | 6 | VSS | Ground | | 7 | HOLD | Hold Input | | 8 | VCC | Supply Voltage |

Functional Features

• Self-timed erase and write cycles for easy integration into systems
• Power-on/off data protection circuitry ensures data integrity during power transitions
• SPI compatible serial interface allows for simple communication with microcontrollers or other devices
• Low-power CMOS technology enables energy-efficient operation
• High endurance with 1,000,000 guaranteed erase/write cycles
• Long-term data retention of up to 100 years

Advantages and Disadvantages

Advantages: - Non-volatile memory for reliable data storage - Easy integration into various electronic systems - Low power consumption - High endurance and long-term data retention - Simple serial interface for communication

Disadvantages: - Limited storage capacity (32K bits) - Relatively slower write and erase times compared to some other memory technologies

Working Principles

The 25LC320AT-I/ST utilizes electrically erasable programmable read-only memory (EEPROM) technology. It stores digital information by trapping charges in an insulated floating gate within the memory cells. The stored charges represent binary data that can be read, erased, and written using electrical signals.

During write operations, the desired data is transferred serially through the SPI interface and stored in the memory cells. Erase operations clear the memory cells, allowing new data to be written. The self-timed erase and write cycles simplify the integration of the 25LC320AT-I/ST into various systems.

Detailed Application Field Plans

The 25LC320AT-I/ST is widely used in applications that require non-volatile memory storage, such as: - Consumer electronics (e.g., smart TVs, set-top boxes, gaming consoles) - Industrial automation systems - Automotive electronics - Medical devices - Internet of Things (IoT) devices

It is particularly suitable for applications that require low-power operation, reliable data storage, and simple integration with microcontrollers or other devices.

Detailed and Complete Alternative Models

Some alternative models to the 25LC320AT-I/ST include: - 25LC640A-I/SN: 64K-bit EEPROM with similar features and package - 25AA1024-I/MS: 1M-bit Serial EEPROM with extended temperature range - 24LC256-I/P: 256K-bit I2C-compatible EEPROM in DIP package - AT25DF321A-SH-T: 32M-bit SPI Flash memory with higher capacity

These alternative models offer different memory sizes, interfaces, and additional features to suit specific application requirements.

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