X1226S8I

Product Overview

• Category: Integrated Circuit (IC)
• Use: Memory and Real-Time Clock (RTC) Module
• Characteristics: Non-volatile, low-power, serial interface
• Package: S8I package (8-pin SOIC)
• Essence: Combines a 256-bit Serial EEPROM with a Real-Time Clock
• Packaging/Quantity: Available in tape and reel packaging, quantity varies

Specifications

• Memory Size: 256 bits
• Interface: Serial (I2C)
• Operating Voltage: 1.8V to 5.5V
• Clock Accuracy: ±2 minutes per month at 25°C
• Operating Temperature Range: -40°C to +85°C
• Data Retention: Minimum 200 years
• Write Cycles: 1 million cycles

Detailed Pin Configuration

The X1226S8I has the following pin configuration:

1. VCC: Power supply voltage
2. GND: Ground reference
3. SDA: Serial Data Line for I2C communication
4. SCL: Serial Clock Line for I2C communication
5. WP: Write Protect pin for memory protection
6. NC: No Connection
7. VBAT: Backup power supply for RTC
8. VSS: Ground reference for backup power supply

Functional Features

• Combination of non-volatile memory and real-time clock functionality
• Low-power consumption for extended battery life
• Serial interface allows easy integration with microcontrollers
• Write protection feature to prevent accidental data modification
• Backup power supply ensures accurate timekeeping during power loss

Advantages and Disadvantages

Advantages: - Compact size and low power consumption make it suitable for portable devices - High data retention and write cycle endurance ensure long-term reliability - Easy integration with microcontrollers due to the serial interface

Disadvantages: - Limited memory size may not be sufficient for certain applications - Clock accuracy may vary under extreme temperature conditions

Working Principles

The X1226S8I combines a Serial EEPROM and a Real-Time Clock. The EEPROM provides non-volatile memory storage, while the RTC ensures accurate timekeeping. The device communicates with a microcontroller through the I2C serial interface, allowing data transfer and configuration. The backup power supply maintains the clock during power loss.

Detailed Application Field Plans

The X1226S8I is commonly used in various applications, including:

1. Consumer Electronics: Used in digital cameras, portable media players, and smartwatches for timekeeping and data storage.
2. Automotive: Integrated into car audio systems, dashboard displays, and navigation devices for reliable timekeeping and data logging.
3. Industrial Automation: Employed in programmable logic controllers (PLCs), industrial sensors, and control systems for data storage and time synchronization.
4. Medical Devices: Utilized in medical equipment such as patient monitors and infusion pumps for accurate timekeeping and event logging.

Detailed and Complete Alternative Models

1. X1226H8I: Similar to X1226S8I but with extended operating temperature range (-40°C to +105°C).
2. X1226V8I: Variant with a larger memory size of 512 bits.
3. X1226T8I: Offers additional tamper detection features for enhanced security.

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