25AA256/WF16K

Product Overview

Category

The 25AA256/WF16K is a serial EEPROM (Electrically Erasable Programmable Read-Only Memory) IC.

Use

It is commonly used for non-volatile data storage in various electronic devices such as consumer electronics, industrial equipment, and automotive applications.

Characteristics

• The 25AA256/WF16K offers low power consumption and high reliability.
• It comes in a small package size, making it suitable for space-constrained designs.
• The IC provides a wide operating voltage range, enabling flexibility in different applications.

Package

The 25AA256/WF16K is typically available in a standard 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence

This EEPROM IC serves as a crucial component for storing configuration settings, calibration data, and other critical information in electronic systems.

Packaging/Quantity

It is commonly supplied in tape and reel packaging, with quantities varying based on the manufacturer's specifications.

Specifications

• Memory Capacity: 256 Kbits
• Interface: SPI (Serial Peripheral Interface)
• Operating Voltage: 1.8V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• Data Retention: Minimum of 100 years
• Write Endurance: Minimum of 1,000,000 cycles

Detailed Pin Configuration

The 25AA256/WF16K features the following pin configuration: 1. Chip Select (/CS) 2. Serial Clock (SCK) 3. Serial Data Input/Output (SI/SO) 4. Ground (GND) 5. Write Protect (/WP) 6. Hold (/HOLD) 7. VCC (Power Supply) 8. Not Connected (NC)

Functional Features

• Byte and Page Write Modes
• Self-Timed Write Cycle
• Power-On Reset (POR) Timer
• Sequential Read Function
• Software Write Protection

Advantages and Disadvantages

Advantages

• Low Power Consumption
• High Reliability
• Small Package Size
• Wide Operating Voltage Range

Disadvantages

• Limited Storage Capacity compared to larger EEPROM ICs
• Slower write speeds compared to some other non-volatile memory technologies

Working Principles

The 25AA256/WF16K operates by utilizing an SPI interface to communicate with the host microcontroller or system. It stores and retrieves data through a series of read and write operations, providing non-volatile memory storage for the connected device.

Detailed Application Field Plans

The 25AA256/WF16K finds application in various fields, including: - Consumer Electronics: Used for storing device settings and user preferences in smart home devices, wearables, and audio/video equipment. - Industrial Equipment: Employed for configuration storage in programmable logic controllers (PLCs), sensors, and automation systems. - Automotive: Utilized for storing calibration data, error logs, and firmware updates in vehicle electronic control units (ECUs).

Detailed and Complete Alternative Models

• AT24C256 (Microchip Technology)
• M24M02 (STMicroelectronics)
• CAT24C256 (ON Semiconductor)

In conclusion, the 25AA256/WF16K serial EEPROM IC offers reliable non-volatile memory storage with low power consumption and a compact form factor, making it suitable for a wide range of electronic applications.

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