25LC128T-I/ST

Product Overview

Category: Integrated Circuits (ICs)

Use: Non-volatile Serial EEPROM Memory

Characteristics: - Low-power CMOS technology - 128 Kbit (16,384 x 8) electrically erasable programmable read-only memory (EEPROM) - SPI (Serial Peripheral Interface) compatible - Wide operating voltage range: 2.5V to 5.5V - High-speed clock frequency: up to 10 MHz - Low power consumption during standby mode - Data retention: minimum of 200 years - Endurance: minimum of 1 million write cycles

Package: SOIC (Small Outline Integrated Circuit)

Essence: The 25LC128T-I/ST is a non-volatile serial EEPROM memory chip that provides reliable and high-performance data storage in various electronic devices.

Packaging/Quantity: The 25LC128T-I/ST is available in tape and reel packaging, with 2,000 units per reel.

Specifications

• Memory Size: 128 Kbit
• Organization: 16,384 x 8 bits
• Interface Type: SPI
• Supply Voltage Range: 2.5V to 5.5V
• Clock Frequency: Up to 10 MHz
• Operating Temperature Range: -40°C to +85°C
• Data Retention: Minimum 200 years
• Endurance: Minimum 1 million write cycles
• Package Type: SOIC-8

Detailed Pin Configuration

The 25LC128T-I/ST has an 8-pin Small Outline Integrated Circuit (SOIC) package. The pin configuration is as follows:

1. Chip Select (/CS)
2. Serial Clock (SCK)
3. Serial Data Input/Output (SI/O)
4. Ground (GND)
5. Write Protect (/WP)
6. Hold (/HOLD)
7. VCC (Supply Voltage)
8. Serial Data Output (SO)

Functional Features

• Non-volatile memory: The 25LC128T-I/ST retains data even when power is removed.
• Serial Peripheral Interface (SPI) compatibility: Allows for easy integration with microcontrollers and other devices.
• High-speed operation: Supports clock frequencies up to 10 MHz, enabling fast data transfer.
• Low power consumption: Consumes minimal power during standby mode, making it suitable for battery-powered applications.
• Wide operating voltage range: Can operate within a voltage range of 2.5V to 5.5V, providing flexibility in various electronic systems.

Advantages and Disadvantages

Advantages: - Reliable non-volatile memory storage - Easy integration with SPI-compatible devices - High-speed data transfer - Low power consumption - Wide operating voltage range

Disadvantages: - Limited storage capacity compared to larger EEPROM chips - Requires external components for proper interfacing

Working Principles

The 25LC128T-I/ST utilizes electrically erasable programmable read-only memory (EEPROM) technology. It stores data by electrically charging or discharging specific memory cells within the chip. The stored data can be read, written, and erased using the Serial Peripheral Interface (SPI) protocol.

During write operations, the chip receives data serially through the SI/O pin and stores it in the appropriate memory cells. Reading data involves sending a read command and receiving the data serially through the SO pin. Erasing data requires specific commands to clear the contents of selected memory locations.

Detailed Application Field Plans

The 25LC128T-I/ST is widely used in various electronic devices and systems, including but not limited to: - Consumer electronics (e.g., TVs, set-top boxes, audio players) - Automotive electronics (e.g., infotainment systems, engine control units) - Industrial automation (e.g., programmable logic controllers, sensors) - Medical devices (e.g., patient monitoring systems, diagnostic equipment) - Smart home appliances (e.g., smart thermostats, security systems)

Detailed and Complete Alternative Models

1. 25LC256-I/SN: 256 Kbit Serial EEPROM, SOIC-8 package
2. 25AA128T-I/ST: 128 Kbit Serial EEPROM with enhanced write protection, SOIC-8 package
3. 25LC640-I/P: 64 Kbit Serial EEPROM, DIP-8 package
4. 25LC1024-I/SN: 1 Mbit Serial EEPROM, SOIC-8 package
5. 25LC512-I/SN: 512 Kbit Serial EEPROM, SOIC-8 package

These alternative models offer different memory capacities and features to suit specific application requirements.

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