25LC256-M/MF

Product Overview

Category: Integrated Circuits (ICs)

Use: The 25LC256-M/MF is a serial EEPROM (Electrically Erasable Programmable Read-Only Memory) that provides non-volatile storage of data. It is commonly used in various electronic devices for storing configuration settings, calibration data, and other small amounts of information.

Characteristics: - Low power consumption - High-speed operation - Small form factor - Reliable data retention - Easy to integrate into circuit designs

Package: The 25LC256-M/MF is available in an 8-pin SOIC (Small Outline Integrated Circuit) package, which allows for easy soldering onto printed circuit boards.

Essence: This IC is designed to provide reliable and non-volatile storage of data in electronic devices, ensuring that important information is retained even when power is removed.

Packaging/Quantity: The 25LC256-M/MF is typically sold in reels or tubes, with each reel or tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Memory Size: 256 kilobits (32 kilobytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating Voltage: 2.5V 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 25LC256-M/MF has the following pin configuration:

1. Chip Select (/CS): Used to enable or disable the device for communication.
2. Serial Clock (SCK): Provides the clock signal for synchronous communication.
3. Serial Data Input (SI): Used to input data to the device during write operations.
4. Serial Data Output (SO): Outputs data from the device during read operations.
5. Write Protect (/WP): When held low, prevents write operations to protect stored data.
6. VCC: Power supply voltage input.
7. Ground (GND): Ground reference for the device.
8. Hold (/HOLD): Used to pause serial communication without resetting the device.

Functional Features

• Byte and Page Write Operations: The 25LC256-M/MF supports both byte-level and page-level write operations, allowing for flexible data storage and retrieval.
• Sequential Read: It allows for sequential reading of data, enabling efficient access to stored information.
• Software Protection: The write protect (/WP) pin can be used to prevent accidental modification of stored data.
• Hardware Protection: The hold (/HOLD) pin allows for pausing serial communication without resetting the device, ensuring data integrity during critical operations.

Advantages and Disadvantages

Advantages: - Non-volatile storage: Retains data even when power is removed. - Small form factor: Easy to integrate into compact electronic devices. - Low power consumption: Ideal for battery-powered applications. - High-speed operation: Enables fast read and write operations. - Reliable data retention: Ensures long-term storage of important information.

Disadvantages: - Limited storage capacity: Suitable for storing small amounts of data. - Requires external microcontroller or host device for communication.

Working Principles

The 25LC256-M/MF utilizes an EEPROM technology that allows for electrically erasing and reprogramming of memory cells. It uses a serial interface (SPI) to communicate with an external microcontroller or host device. During write operations, data is sent to the device in bytes or pages, which are then stored in the memory cells. Reading data involves sending appropriate commands and receiving the requested data through the serial interface.

Detailed Application Field Plans

The 25LC256-M/MF is widely used in various electronic devices and applications, including but not limited to: - Consumer electronics: Used for storing configuration settings, user preferences, and calibration data in devices such as TVs, audio systems, and gaming consoles. - Industrial automation: Provides non-volatile storage for critical parameters, sensor calibration data, and device configurations in industrial control systems. - Automotive electronics: Used for storing vehicle-specific data, firmware updates, and diagnostic information in automotive modules and ECUs (Electronic Control Units). - Medical devices: Enables storage of patient-specific data, device settings, and firmware updates in medical equipment and instruments.

Detailed and Complete Alternative Models

Some alternative models to the 25LC256-M/MF include: - AT25080A: A similar serial EEPROM with a smaller memory size of 8 kilobits. - CAT24C256: Another serial EEPROM with the same memory size of 256 kilobits. - M95640: A compatible serial EEPROM with a higher operating voltage range of 1.8V to 5.5V.

These alternative models offer similar functionality and can