24LC22AT-I/SN

Product Overview

Category: Integrated Circuit (IC)

Use: Non-volatile Memory

Characteristics: - Low-power CMOS technology - 2-wire serial interface - 2Kbits of EEPROM memory - 128-byte page write buffer - Self-timed write cycle - 1,000,000 erase/write cycles - Data retention > 200 years - 8-pin SOIC package

Essence: The 24LC22AT-I/SN is a non-volatile memory IC that provides 2Kbits of electrically erasable programmable read-only memory (EEPROM) storage. It features a 2-wire serial interface and low-power CMOS technology.

Packaging/Quantity: The 24LC22AT-I/SN is available in an 8-pin Small Outline Integrated Circuit (SOIC) package. It is typically sold in reels or tubes containing multiple units.

Specifications

• Memory Size: 2Kbits (256 bytes)
• Interface: I2C (2-wire serial)
• Supply Voltage: 1.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Cycle Time: 5ms (typical)
• Erase/Write Cycles: 1,000,000
• Data Retention: > 200 years

Detailed Pin Configuration

The 24LC22AT-I/SN has the following pin configuration:

1. VCC - Power supply voltage
2. SDA - Serial data input/output
3. SCL - Serial clock input
4. WP - Write protect (optional)
5. GND - Ground
6. NC - No connection
7. NC - No connection
8. VSS - Ground

Functional Features

• 2-wire serial interface allows easy integration with microcontrollers and other devices.
• Self-timed write cycle simplifies programming operations.
• 128-byte page write buffer improves write efficiency.
• Low-power CMOS technology enables energy-efficient operation.
• High endurance with 1,000,000 erase/write cycles.
• Long data retention period of over 200 years.

Advantages and Disadvantages

Advantages: - Compact size and low power consumption make it suitable for portable devices. - Easy integration with microcontrollers due to the I2C interface. - High endurance and long data retention ensure reliable data storage.

Disadvantages: - Limited memory capacity (2Kbits) may not be sufficient for certain applications. - Relatively slower write cycle time compared to some other EEPROMs.

Working Principles

The 24LC22AT-I/SN operates based on the principles of electrically erasable programmable read-only memory (EEPROM). It uses a 2-wire serial interface (I2C) to communicate with the controlling device. The memory can be written or erased by applying appropriate voltage levels to the control pins. The self-timed write cycle ensures proper timing for programming operations. The data is retained even when the power supply is disconnected, making it non-volatile.

Detailed Application Field Plans

The 24LC22AT-I/SN is commonly used in various electronic devices that require non-volatile memory storage. Some application fields include:

1. Consumer Electronics: Used in smart TVs, set-top boxes, and audio/video equipment for storing configuration settings, user preferences, and firmware updates.
2. Industrial Automation: Employed in industrial control systems, PLCs, and sensors for storing calibration data, event logs, and system parameters.
3. Automotive: Integrated into automotive electronics for storing vehicle settings, fault codes, and firmware updates.
4. Medical Devices: Utilized in medical equipment for storing patient data, device configurations, and firmware updates.
5. IoT Devices: Incorporated into Internet of Things (IoT) devices for storing sensor data, device configurations, and firmware updates.

Detailed and Complete Alternative Models

1. 24LC01B-I/SN: 1Kbit EEPROM memory, 8-pin SOIC package.
2. 24LC04B-I/SN: 4Kbit EEPROM memory, 8-pin SOIC package.
3. 24LC08B-I/SN: 8Kbit EEPROM memory, 8-pin SOIC package.
4. 24LC16B-I/SN: 16Kbit EEPROM memory, 8-pin SOIC package.
5. 24LC32B-I/SN: 32Kbit EEPROM memory, 8-pin SOIC package.
6. 24LC64B-I/SN: 64Kbit EEPROM memory, 8-pin SOIC package.
7. 24LC128-I/SN: 128Kbit EEPROM memory, 8-pin SOIC package.