Encyclopedia Entry: 25AA040AT-I/OT

Product Overview

• Category: Integrated Circuit (IC)
• Use: Non-volatile Serial EEPROM Memory
• Characteristics: Small form factor, low power consumption, high reliability
• Package: SOT-23-5 package
• Essence: Stores and retrieves digital information in electronic devices
• Packaging/Quantity: Available in tape and reel packaging, with a quantity of 3000 units per reel

Specifications

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

Detailed Pin Configuration

The 25AA040AT-I/OT IC has the following pin configuration:

| Pin Name | Description | |----------|-------------| | VCC | Power supply voltage input | | GND | Ground reference | | CS | Chip select input | | SCK | Serial clock input | | SI | Serial data input | | SO | Serial data output |

Functional Features

• Non-volatile memory: Retains stored data even when power is removed
• Serial interface: Allows for easy integration with microcontrollers and other digital devices
• Low power consumption: Ideal for battery-powered applications
• High reliability: Built-in error detection and correction mechanisms ensure data integrity

Advantages and Disadvantages

Advantages: - Compact size enables integration into space-constrained designs - Wide operating voltage range allows compatibility with various systems - High endurance and long data retention ensure reliable performance over time

Disadvantages: - Limited storage capacity compared to other memory options - Relatively slower data transfer rate compared to parallel memory interfaces

Working Principles

The 25AA040AT-I/OT is based on Electrically Erasable Programmable Read-Only Memory (EEPROM) technology. It utilizes a floating gate transistor structure to store and retrieve digital information. The memory cells can be electrically programmed and erased, allowing for non-volatile data storage.

Detailed Application Field Plans

The 25AA040AT-I/OT IC finds applications in various electronic devices, including but not limited to: 1. Consumer electronics: Smartphones, tablets, digital cameras 2. Automotive systems: Infotainment systems, engine control units 3. Industrial equipment: Data loggers, sensors, control systems 4. Medical devices: Patient monitoring systems, diagnostic equipment 5. IoT devices: Smart home appliances, wearable devices

Detailed Alternative Models

1. 25AA080D-I/SN: 8 kilobits (1024 bytes) Serial EEPROM, SOIC-8 package
2. 25LC256-I/SN: 256 kilobits (32 kilobytes) Serial EEPROM, SOIC-8 package
3. 24AA64T-I/OT: 64 kilobits (8 kilobytes) Serial EEPROM, SOT-23-5 package

These alternative models offer different memory capacities and package options, providing flexibility for various design requirements.

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