25LC256-E/SN

Product Overview

Category: Integrated Circuits (ICs)

Use: Non-volatile Memory

Characteristics: - Low-power CMOS technology - 256 Kbit (32 Kbyte) capacity - SPI bus compatible - 1 MHz clock rate - 2.5V to 5.5V operating voltage range - 10,000,000 erase/write cycles endurance - Data retention > 200 years - 8-pin SOIC package

Package Essence: The 25LC256-E/SN is a non-volatile memory chip that provides reliable data storage in various electronic devices. It offers high endurance and low power consumption, making it suitable for applications where data integrity and energy efficiency are crucial.

Packaging/Quantity: The 25LC256-E/SN is available in an 8-pin Small Outline Integrated Circuit (SOIC) package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Capacity: 256 Kbit (32 Kbyte)
• Interface: Serial Peripheral Interface (SPI)
• Clock Rate: Up to 1 MHz
• Operating Voltage Range: 2.5V to 5.5V
• Endurance: 10,000,000 erase/write cycles
• Data Retention: > 200 years
• Package Type: 8-pin SOIC

Detailed Pin Configuration

The 25LC256-E/SN has the following pin configuration:

1. Chip Select (/CS)
2. Serial Clock (SCK)
3. Serial Data Input/Output (SDI/SDO)
4. Write Protect (/WP)
5. Ground (GND)
6. VCC (Power Supply)
7. Hold (/HOLD)
8. Serial Output (SO)

Functional Features

• Non-volatile memory: The 25LC256-E/SN retains data even when power is removed.
• SPI compatibility: It uses the Serial Peripheral Interface (SPI) for communication with other devices.
• High endurance: With 10,000,000 erase/write cycles, it ensures reliable and long-lasting data storage.
• Low power consumption: The chip operates efficiently in low-power CMOS technology, conserving energy.
• Wide operating voltage range: It can function within a voltage range of 2.5V to 5.5V.

Advantages and Disadvantages

Advantages: - Reliable data storage - High endurance - Low power consumption - Wide operating voltage range - Compact package size

Disadvantages: - Limited capacity compared to larger memory chips - Slower clock rate compared to some high-speed memory devices

Working Principles

The 25LC256-E/SN utilizes non-volatile memory technology to store data. It communicates with other devices using the SPI interface. When data needs to be written or erased, the chip follows the commands received through the SPI bus. It retains data even when power is removed, ensuring that information remains intact during power cycles.

Detailed Application Field Plans

The 25LC256-E/SN is widely used in various electronic devices that require non-volatile memory for data storage. Some common application fields include:

1. Consumer Electronics: Used in smart TVs, set-top boxes, and audio systems for storing configuration settings and user preferences.
2. Industrial Automation: Employed in industrial control systems to store critical parameters, calibration data, and firmware updates.
3. Automotive: Integrated into automotive electronics for storing vehicle-specific data, such as mileage, error codes, and system configurations.
4. Medical Devices: Utilized in medical equipment for storing patient data, device settings, and event logs.
5. Internet of Things (IoT): Incorporated into IoT devices for data logging, sensor calibration, and firmware updates.

Detailed and Complete Alternative Models

1. 25LC512-E/SN: Similar to the 25LC256-E/SN but with double the capacity (512 Kbit).
2. 25LC1024-E/SN: Offers even higher capacity (1 Mbit) while maintaining compatibility with the 25LC256-E/SN.
3. 25AA256-I/SN: A smaller capacity alternative (256 Kbit) with a different interface (I2C) compared to the SPI-based 25LC256-E/SN.

These alternative models provide options for different memory requirements and interface preferences.

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