25LC040A/W16K

Product Overview

Category: Integrated Circuit (IC)

Use: Non-volatile Serial EEPROM Memory

Characteristics: - Low-power CMOS technology - 4 Kbits of memory organized as 512 x 8 bits - SPI (Serial Peripheral Interface) compatible - 1 MHz clock rate - 2.5V to 5.5V operating voltage range - 100,000 erase/write cycles endurance - Data retention > 200 years - 8-byte page write mode for faster programming - Self-timed erase and write cycles - Write protect pin for hardware data protection - Available in various package options

Package: 8-pin PDIP (Plastic Dual In-line Package), SOIC (Small Outline Integrated Circuit), TSSOP (Thin Shrink Small Outline Package)

Essence: The 25LC040A/W16K is a non-volatile serial EEPROM memory chip that provides reliable and low-power storage for small-scale applications.

Packaging/Quantity: The 25LC040A/W16K is typically sold in reels or tubes containing multiple units, with quantities varying based on the manufacturer's packaging standards.

Specifications

• Memory Size: 4 Kbits (512 x 8 bits)
• Operating Voltage Range: 2.5V to 5.5V
• Clock Rate: 1 MHz
• Endurance: 100,000 erase/write cycles
• Data Retention: > 200 years
• Page Write Mode: 8-byte
• Package Options: 8-pin PDIP, SOIC, TSSOP

Detailed Pin Configuration

The 25LC040A/W16K has the following pin configuration:

| Pin Number | Pin Name | Function | |------------|----------|----------| | 1 | CS | Chip Select (Active Low) | | 2 | SCK | Serial Clock | | 3 | SI | Serial Data Input | | 4 | SO | Serial Data Output | | 5 | WP | Write Protect (Active Low) | | 6 | VSS | Ground | | 7 | NC | No Connection | | 8 | VCC | Power Supply Voltage |

Functional Features

• Non-volatile memory: The 25LC040A/W16K retains data even when power is removed.
• SPI compatibility: It supports the Serial Peripheral Interface for easy integration with microcontrollers and other devices.
• Low-power consumption: Utilizes low-power CMOS technology, making it suitable for battery-powered applications.
• Hardware data protection: The write protect pin allows for hardware-based data protection.
• Self-timed erase and write cycles: Simplifies programming operations by eliminating the need for external timing control.

Advantages and Disadvantages

Advantages: - Compact size and lightweight - High endurance and long data retention - Easy integration with microcontrollers - Low-power consumption - Hardware data protection

Disadvantages: - Limited storage capacity (4 Kbits) - Relatively slower clock rate compared to some other EEPROMs

Working Principles

The 25LC040A/W16K utilizes a floating-gate transistor structure to store data. When data needs to be written, an electric charge is applied to the floating gate, altering its threshold voltage. This change in threshold voltage represents the stored data. During read operations, the threshold voltage is measured to determine the stored data.

Detailed Application Field Plans

The 25LC040A/W16K is commonly used in various applications, including but not limited to: - Embedded systems - Consumer electronics - Industrial automation - Automotive electronics - Medical devices

Detailed and Complete Alternative Models

Some alternative models to the 25LC040A/W16K include: - AT24C04 (by Atmel) - CAT24C04 (by ON Semiconductor) - M24C04 (by STMicroelectronics) - X24C04 (by Xicor)

These alternative models offer similar functionality and can be used as replacements depending on specific requirements.

Word count: 411 words