25AA020AT-I/SN

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Non-volatile Memory
• Characteristics: Serial EEPROM, 2Kbit (256 x 8), SPI Interface
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Data storage and retrieval in electronic devices
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Memory Size: 2Kbits
• Organization: 256 bytes x 8 bits
• Interface: Serial Peripheral Interface (SPI)
• Voltage Range: 1.8V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Endurance: 1 Million cycles
• Data Retention: 200 Years

Detailed Pin Configuration

The 25AA020AT-I/SN IC has a total of 8 pins:

1. Chip Select (/CS) - Active low input for device selection.
2. Serial Clock (SCK) - Input for synchronizing data transfer.
3. Serial Data Input (SI) - Input for shifting data into the device.
4. Serial Data Output (SO) - Output for shifting data out of the device.
5. Write Protect (/WP) - Input for write protection control.
6. VCC - Power supply voltage.
7. Ground (GND) - Ground reference.
8. Hold (/HOLD) - Input for suspending serial communication.

Functional Features

• Non-volatile memory: The 25AA020AT-I/SN is capable of retaining stored data even when power is removed.
• Serial EEPROM: It uses an Electrically Erasable Programmable Read-Only Memory (EEPROM) technology.
• SPI Interface: The device communicates using the Serial Peripheral Interface (SPI) protocol.
• Low power consumption: It operates with low power requirements, making it suitable for battery-powered devices.
• High reliability: The IC offers a high write endurance and long data retention period.

Advantages and Disadvantages

Advantages: - Compact size and easy integration into electronic circuits. - Wide voltage range allows compatibility with various systems. - High-speed data transfer using the SPI interface. - Low power consumption extends battery life in portable devices.

Disadvantages: - Limited storage capacity compared to other memory technologies. - Relatively higher cost per bit compared to larger memory devices.

Working Principles

The 25AA020AT-I/SN is based on EEPROM technology, which utilizes floating-gate transistors to store and retrieve data. It employs the Serial Peripheral Interface (SPI) protocol for communication with the host microcontroller or system. The device can be accessed by asserting the Chip Select (/CS) pin and transferring data through the Serial Clock (SCK) and Serial Data Input (SI) pins. The stored data can be read by shifting it out through the Serial Data Output (SO) pin. Write protection can be enabled by controlling the Write Protect (/WP) pin.

Detailed Application Field Plans

The 25AA020AT-I/SN is widely used in various electronic devices that require non-volatile memory for storing configuration settings, calibration data, or user-specific information. Some common application areas include:

1. Consumer Electronics: Smartphones, tablets, digital cameras, and portable media players.
2. Automotive: Engine control units, infotainment systems, and instrument clusters.
3. Industrial Control Systems: Programmable logic controllers (PLCs), data loggers, and sensor modules.
4. Medical Devices: Patient monitoring systems, infusion pumps, and diagnostic equipment.
5. Internet of Things (IoT): Connected devices, smart home automation, and wearable devices.

Detailed and Complete Alternative Models

1. 25AA010A-I/SN: 1Kbit (128 x 8) Serial EEPROM, SOIC package.
2. 25AA040A-I/SN: 4Kbit (512 x 8) Serial EEPROM, SOIC package.
3. 25AA080A-I/SN: 8Kbit (1024 x 8) Serial EEPROM, SOIC package.
4. 25AA160A-I/SN: 16Kbit (2048 x 8) Serial EEPROM, SOIC package.
5. 25AA320A-I/SN: 32Kbit (4096 x 8) Serial EEPROM, SOIC package.

These alternative models offer different memory capacities while maintaining similar characteristics and package options.

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