25LC040-I/SN

Product Overview

Category: Integrated Circuit (IC)

Use: Non-volatile Serial EEPROM Memory

Characteristics: - Low-power CMOS technology - 4K-bit (512 x 8) electrically erasable programmable read-only memory (EEPROM) - SPI compatible serial interface - 2.5V to 5.5V operating voltage range - 1 MHz clock rate - 64-byte page write mode - Self-timed erase and write cycles - 100-year data retention - Endurance: 1,000,000 erase/write cycles - Industrial temperature range (-40°C to +85°C) - Lead-free package options

Package: SOIC (Small Outline Integrated Circuit)

Essence: The 25LC040-I/SN is a non-volatile serial EEPROM memory chip that provides reliable data storage in various electronic devices.

Packaging/Quantity: The 25LC040-I/SN is available in tape and reel packaging with 2,500 units per reel.

Specifications

• Memory Size: 4K bits
• Organization: 512 bytes x 8 bits
• Interface: SPI (Serial Peripheral Interface)
• Operating Voltage: 2.5V - 5.5V
• Clock Rate: 1 MHz
• Write Modes: Byte and Page (64-byte)
• Data Retention: 100 years
• Endurance: 1,000,000 erase/write cycles
• Temperature Range: -40°C to +85°C
• Package Type: SOIC-8

Pin Configuration

The 25LC040-I/SN has an 8-pin Small Outline Integrated Circuit (SOIC) package. The pin configuration is as follows:

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

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

Functional Features

• Non-volatile memory: The 25LC040-I/SN retains data even when the power is turned off.
• SPI interface: It uses a serial peripheral interface for communication with other devices.
• Low-power consumption: The chip operates on low power, making it suitable for battery-powered devices.
• Self-timed erase and write cycles: The chip manages the timing of erase and write operations internally.
• Page write mode: Allows writing up to 64 bytes of data in a single operation, improving efficiency.

Advantages and Disadvantages

Advantages: - Reliable non-volatile memory storage - Low power consumption - Easy integration with SPI-compatible systems - High endurance and long data retention - Compact package size

Disadvantages: - Limited storage capacity (4K bits) - Slower write speed compared to some other EEPROMs - Lack of additional security features

Working Principles

The 25LC040-I/SN utilizes electrically erasable programmable read-only memory (EEPROM) technology. It stores data by trapping electrical charges within its memory cells. The chip communicates with the host system through the SPI interface, allowing for easy integration into various electronic devices. It supports both byte and page write modes, providing flexibility in data storage.

Detailed Application Field Plans

The 25LC040-I/SN is widely used in various applications, including but not limited to: - Consumer electronics - Industrial automation - Automotive systems - Medical devices - Communication equipment - Smart meters - IoT (Internet of Things) devices

Alternative Models

Here are some alternative models that offer similar functionality to the 25LC040-I/SN:

1. AT24C04 - 4K-bit I2C-Compatible EEPROM
2. CAT24C04 - 4K-bit Serial EEPROM with SPI Interface
3. M93C46 - 4K-bit Microwire-Compatible EEPROM
4. 24AA04 - 4K-bit Two-Wire Serial EEPROM

These alternatives provide options for different communication interfaces and package types, allowing designers to choose the most suitable option for their specific requirements.

In conclusion, the 25LC040-I/SN is a reliable non-volatile serial EEPROM memory chip with a compact package size and low power consumption. It offers