Encyclopedia Entry: 25LC1024T-E/MF

Product Overview

Category

The 25LC1024T-E/MF belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

This product is commonly used for non-volatile data storage in various electronic devices, such as microcontrollers, embedded systems, and consumer electronics.

Characteristics

• Non-volatile: The 25LC1024T-E/MF retains stored data even when power is removed.
• Electrically erasable: Data can be erased and reprogrammed electronically, without requiring physical removal of the chip.
• High storage capacity: The 25LC1024T-E/MF has a storage capacity of 1,048,576 bits (128 kilobytes).
• Low power consumption: This chip operates at low power levels, making it suitable for battery-powered devices.
• Fast access time: The 25LC1024T-E/MF offers quick read and write operations, enhancing overall system performance.

Package and Quantity

The 25LC1024T-E/MF is available in a small surface-mount package, typically measuring 8-pin SOIC (Small Outline Integrated Circuit). It is commonly sold in reels or tubes containing multiple units.

Specifications

• Memory Capacity: 1,048,576 bits (128 kilobytes)
• Interface: Serial Peripheral Interface (SPI)
• Supply Voltage: 2.5V - 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Endurance: 1,000,000 cycles
• Data Retention: 200 years

Pin Configuration

The 25LC1024T-E/MF features an 8-pin SOIC package with the following pin configuration:

| Pin Number | Pin Name | Function | |------------|----------|----------| | 1 | CS | Chip Select | | 2 | SO | Serial Data Output | | 3 | WP | Write Protect | | 4 | GND | Ground | | 5 | SI | Serial Data Input | | 6 | SCK | Serial Clock | | 7 | HOLD | Hold Input | | 8 | VCC | Supply Voltage |

Functional Features

• Sequential Read and Write: The 25LC1024T-E/MF supports sequential read and write operations, allowing efficient data transfer.
• Hardware Write Protection: The WP pin can be used to protect the stored data from accidental modification.
• Software Write Protection: The chip provides software commands to enable or disable write protection.
• Sector Erase Capability: The memory can be erased in smaller sectors, enabling selective data modification.
• Self-Timed Programming Cycle: The chip automatically manages the programming cycle, simplifying the integration process.

Advantages and Disadvantages

Advantages

• High storage capacity for EEPROM applications.
• Low power consumption, suitable for battery-powered devices.
• Fast access time enhances system performance.
• Flexible sector erase capability allows selective data modification.

Disadvantages

• Limited storage capacity compared to other non-volatile memory technologies.
• Higher cost per bit compared to traditional read-only memory (ROM) chips.

Working Principles

The 25LC1024T-E/MF utilizes a floating-gate transistor structure to store data. When a voltage is applied, electrons are trapped in the floating gate, representing a logical "1" state. Conversely, when the charge is removed, it represents a logical "0" state. The stored data can be modified by applying appropriate voltages during the programming cycle.

Application Field Plans

The 25LC1024T-E/MF finds applications in various fields, including: 1. Microcontroller-based systems requiring non-volatile data storage. 2. Industrial automation and control systems. 3. Automotive electronics for storing configuration data. 4. Consumer electronics, such as smart appliances and wearable devices. 5. Internet of Things (IoT) devices for data logging and configuration storage.

Alternative Models

Other alternative models with similar functionality to the 25LC1024T-E/MF include: - AT25080A-10PU-2.7: Manufactured by Atmel, this chip offers a capacity of 8 kilobits and operates at a supply voltage of 2.7V. - CAT24C256WI-GT3: Produced by ON Semiconductor, this EEPROM chip provides a capacity of 256 kilobits and operates at a supply voltage of 1.8V - 5.5V. - M93C66-WMN6TP: Manufactured by STMicroelectronics, this chip has a capacity of 4 kilobits and operates at a supply voltage of 2.5V - 5.5V.

In conclusion, the