25LC040AX-I/ST Product Overview

Introduction

The 25LC040AX-I/ST is a serial EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by Microchip Technology. This entry provides an in-depth overview of the product, including its category, use, characteristics, package, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

• Category: Serial EEPROM
• Use: Data storage and retrieval in embedded systems
• Characteristics: Low power consumption, high reliability, small form factor
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Non-volatile memory for storing configuration parameters and data
• Packaging/Quantity: Tape and reel packaging, available in various quantities

Specifications

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

Detailed Pin Configuration

The 25LC040AX-I/ST features the following pin configuration: 1. VSS - Ground 2. MISO - Master In Slave Out 3. VSS - Ground 4. VDD - Power Supply 5. SI - Serial Input 6. SCK - Serial Clock 7. CS - Chip Select 8. SO - Serial Output

Functional Features

• Byte and Page Write Modes
• Self-timed Write Cycle
• Sequential Reads
• Unrestricted Writes
• Partial Page Writes

Advantages and Disadvantages

Advantages

• Low power consumption
• High reliability and endurance
• Small form factor
• Wide operating voltage range

Disadvantages

• Limited storage capacity compared to other memory technologies
• Slower write speeds compared to volatile memory

Working Principles

The 25LC040AX-I/ST operates based on the principles of EEPROM technology, utilizing floating gate transistors to store data electrically. When data is written, charge is injected into the floating gate, altering its threshold voltage. This allows the device to retain data even when power is removed.

Detailed Application Field Plans

The 25LC040AX-I/ST is widely used in various embedded systems, including but not limited to: - Industrial control systems - Automotive electronics - Consumer electronics - Medical devices - Communication equipment

Detailed and Complete Alternative Models

Some alternative models to the 25LC040AX-I/ST include: - AT24C04 from Microchip Technology - CAT24C04 from ON Semiconductor - M24C04 from STMicroelectronics

In conclusion, the 25LC040AX-I/ST serial EEPROM offers a reliable and efficient solution for non-volatile data storage in embedded systems, with its low power consumption, high reliability, and compact form factor making it suitable for a wide range of applications.

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