25LC040AT-E/SN

Product Overview

Category: Integrated Circuits (ICs)

Use: Non-volatile Serial EEPROM Memory

Characteristics: - Low-power CMOS technology - 4Kbits of memory - SPI interface - 1.8V to 5.5V operating voltage range - 1 MHz clock rate - 100,000 erase/write cycles - Data retention > 200 years

Package: SOIC (Small Outline Integrated Circuit)

Essence: The 25LC040AT-E/SN is a non-volatile serial EEPROM memory chip that provides reliable data storage in various electronic devices.

Packaging/Quantity: The 25LC040AT-E/SN is available in a tape and reel packaging with 2,500 units per reel.

Specifications

• Memory Size: 4Kbits (512 bytes)
• Interface: SPI (Serial Peripheral Interface)
• Operating Voltage Range: 1.8V to 5.5V
• Clock Rate: Up to 1 MHz
• Erase/Write Cycles: 100,000 cycles
• Data Retention: > 200 years
• Package Type: SOIC-8

Detailed Pin Configuration

The 25LC040AT-E/SN has 8 pins arranged as follows:

┌───┬───┐ │ 1 │ 8 │ │ │ │ ┌──┴───┴───┴──┐ │ │ │ │ └──┬───┬───┬──┘ │ 4 │ 5 │ │ │ │ └───┴───┘

Pin Description: 1. Chip Select (CS): Used to enable/disable the chip for communication. 2. Serial Clock (SCK): Provides the clock signal for data transfer. 3. Serial Data Input (SI): Used to input data into the chip. 4. Ground (GND): Connected to the ground reference of the system. 5. Serial Data Output (SO): Outputs data from the chip. 6. Write Protect (WP): Used to protect the memory from accidental writes. 7. Hold (HOLD): Pauses serial communication without resetting the chip. 8. Power Supply (VCC): Connected to the power source of the system.

Functional Features

• Non-volatile memory: Retains data even when power is disconnected.
• SPI interface: Allows for easy integration with microcontrollers and other devices.
• Low-power consumption: Ideal for battery-powered applications.
• High endurance: Supports up to 100,000 erase/write cycles.
• Wide operating voltage range: Can be used in various systems with different power supply levels.
• Compact package: The SOIC-8 package offers space-saving benefits.

Advantages and Disadvantages

Advantages: - Reliable non-volatile memory storage - Easy integration with SPI interface - Low power consumption - High endurance - Wide operating voltage range - Compact package

Disadvantages: - Limited memory size (4Kbits)

Working Principles

The 25LC040AT-E/SN operates based on the principles of EEPROM (Electrically Erasable Programmable Read-Only Memory). It uses a floating gate transistor structure to store and retrieve data. When data needs to be written, an electric charge is applied to the floating gate, altering its electrical characteristics. This change can be detected during read operations, allowing the stored data to be retrieved.

Detailed Application Field Plans

The 25LC040AT-E/SN is widely used in various electronic devices that require non-volatile memory storage. Some common application fields include:

1. Consumer Electronics: Used in smart TVs, set-top boxes, and audio/video equipment for storing configuration settings and user preferences.
2. Automotive Systems: Integrated into automotive electronics for data logging, firmware updates, and storing vehicle-specific information.
3. Industrial Automation: Utilized in industrial control systems, PLCs (Programmable Logic Controllers), and sensors for storing calibration data and system parameters.
4. Medical Devices: Incorporated into medical equipment for storing patient data, device configurations, and firmware updates.
5. IoT (Internet of Things): Integrated into IoT devices for storing sensor data, network configurations, and firmware updates.

Detailed and Complete Alternative Models

• 25LC080AT-E/SN: 8Kbits EEPROM memory with similar specifications and package type.
• 25LC160AT-E/SN: 16Kbits EEPROM memory with similar specifications and package type.
• 25LC320AT-E/SN: 32Kbits EEPROM memory with similar specifications and package type.
• 25LC640AT-E/SN: 64K