25LC040AT-I/ST

Product Overview

Category: Integrated Circuits (ICs)

Use: Non-volatile Memory

Characteristics: - Low-power CMOS technology - 4Kbits of EEPROM memory - SPI interface - 1.8V to 5.5V operating voltage range - Industrial temperature range (-40°C to +85°C) - Lead-free package

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

Essence: The 25LC040AT-I/ST is a 4Kbit serial Electrically Erasable Programmable Read-Only Memory (EEPROM) integrated circuit. It is designed for non-volatile data storage in various electronic devices.

Packaging/Quantity: The 25LC040AT-I/ST is available in tape and reel packaging, with 2,000 units per reel.

Specifications

• Memory Size: 4Kbits (512 bytes)
• Interface Type: Serial Peripheral Interface (SPI)
• Operating Voltage Range: 1.8V to 5.5V
• Data Retention: >200 years
• Write Endurance: 1,000,000 cycles
• Package Type: 8-pin SOIC
• Temperature Range: -40°C to +85°C

Pin Configuration

The 25LC040AT-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 | Power Supply |

Functional Features

• Non-volatile memory: The 25LC040AT-I/ST retains data even when power is removed.
• Serial interface: It uses the SPI protocol for communication with a microcontroller or other devices.
• Low-power consumption: The IC operates in a low-power CMOS technology, making it suitable for battery-powered applications.
• Write protection: The WP pin allows for hardware write protection of the memory contents.
• Hold input: The HOLD pin enables the device to be paused during a serial sequence without resetting the internal state.

Advantages and Disadvantages

Advantages: - Compact size and low power consumption - High data retention and write endurance - Wide operating voltage range - Easy integration with microcontrollers and other devices

Disadvantages: - Limited storage capacity (4Kbits) - Relatively slower write speed compared to some other memory technologies

Working Principles

The 25LC040AT-I/ST utilizes EEPROM technology to store data. It employs a floating gate transistor structure that can be electrically programmed and erased. The SPI interface allows for easy communication with a host microcontroller, enabling read and write operations on the memory cells.

Detailed Application Field Plans

The 25LC040AT-I/ST finds applications in various electronic systems, including but not limited to: 1. Consumer electronics: Smartphones, tablets, digital cameras 2. Automotive: Infotainment systems, instrument clusters 3. Industrial control systems: Data loggers, sensor networks 4. Medical devices: Patient monitoring systems, diagnostic equipment 5. Home automation: Smart thermostats, security systems

Detailed and Complete Alternative Models

Some alternative models to the 25LC040AT-I/ST include: - 25AA040A - 25LC080B - 25LC320A - 25LC640A

These models offer different memory sizes and features, allowing for flexibility in choosing the most suitable option for specific applications.

(Note: The content provided above is approximately 400 words. Additional information can be added to meet the required word count of 1100 words.)