X1227S8IZ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Real-time clock/calendar with non-volatile memory
• Characteristics:
  • Low power consumption
  • High accuracy timekeeping
  • Non-volatile memory for data storage
  • Small package size
• Package: S8 package
• Essence: Real-time clock and non-volatile memory integrated into a single IC
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on customer requirements

Specifications

• Supply Voltage: 2.7V to 5.5V
• Timekeeping Accuracy: ±2 minutes per month at 25°C
• Memory Size: 256 bytes of non-volatile RAM
• Operating Temperature Range: -40°C to +85°C
• Interface: I2C (Inter-Integrated Circuit) bus compatible

Detailed Pin Configuration

The X1227S8IZ IC has the following pin configuration:

1. VCC - Power supply input
2. GND - Ground connection
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. VBAT - Backup battery input for maintaining timekeeping during power loss
7. NC - No Connection
8. SQW/INT - Square Wave Output or Interrupt output pin

Functional Features

• Real-time clock/calendar functionality with seconds, minutes, hours, day, date, month, and year information
• Automatic leap year compensation
• Alarm function with programmable interrupt output
• Battery backup for continuous timekeeping during power loss
• Non-volatile memory for storing user-specific data
• Write protection feature to prevent accidental modification of stored data

Advantages and Disadvantages

Advantages: - High accuracy timekeeping - Low power consumption - Integrated non-volatile memory - Small package size

Disadvantages: - Limited memory size (256 bytes) - Requires an external backup battery for continuous timekeeping during power loss

Working Principles

The X1227S8IZ is based on a quartz crystal oscillator that provides accurate timing signals. It utilizes an I2C bus interface to communicate with the microcontroller or host system. The IC incorporates non-volatile memory to store time and user-specific data, ensuring data integrity even during power loss.

Detailed Application Field Plans

The X1227S8IZ IC finds applications in various fields, including:

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

Detailed and Complete Alternative Models

1. X1226S8IZ: Similar to X1227S8IZ but with a smaller memory size of 128 bytes.
2. DS1307: Real-time clock IC with 56 bytes of non-volatile RAM and I2C interface.
3. PCF8563: Integrated circuit with real-time clock/calendar and 240 bytes of non-volatile RAM.

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