RX-8581NB:B I2C-BUS

Product Overview

Category: Integrated Circuit (IC)

Use: The RX-8581NB:B I2C-BUS is a versatile integrated circuit used for real-time clock (RTC) applications. It provides accurate timekeeping and calendar functions, making it suitable for various electronic devices that require precise timing.

Characteristics: - I2C-BUS interface for easy integration with other devices - Low power consumption for extended battery life - Wide operating voltage range for flexibility in different applications - Small package size for space-constrained designs - Reliable and stable performance

Package: The RX-8581NB:B I2C-BUS is available in a compact and durable package, ensuring protection against environmental factors and mechanical stress.

Essence: This IC is designed to provide reliable and accurate timekeeping functionality, enabling synchronization of various processes within electronic devices.

Packaging/Quantity: The RX-8581NB:B I2C-BUS is typically packaged in reels or tubes, depending on the manufacturer's specifications. The quantity per package may vary, but it is commonly available in bulk quantities for efficient production.

Specifications

The key specifications of the RX-8581NB:B I2C-BUS are as follows:

• Supply Voltage: 1.8V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Timekeeping Accuracy: ±3 minutes per month at 25°C
• I2C-BUS Interface: Supports standard and fast mode (100 kHz and 400 kHz)
• Clock Output Frequency: Programmable from 32.768 kHz to 1 Hz
• Battery Backup: Integrated backup power supply for uninterrupted timekeeping during power loss

Detailed Pin Configuration

The RX-8581NB:B I2C-BUS features a compact pin configuration, as follows:

1. VCC: Supply voltage input
2. GND: Ground connection
3. SDA: I2C data line
4. SCL: I2C clock line
5. SQW/OUT: Programmable square wave output or interrupt output
6. VBAT: Backup battery input for power loss protection

Functional Features

The RX-8581NB:B I2C-BUS offers the following functional features:

1. Real-Time Clock: Provides accurate timekeeping and calendar functions.
2. Alarm Function: Allows setting of alarms for specific events or time intervals.
3. Timer Function: Supports countdown or elapsed time measurement.
4. Power Management: Efficient power consumption for extended battery life.
5. Oscillator Calibration: Automatic calibration to ensure precise timekeeping.

Advantages and Disadvantages

Advantages: - Accurate timekeeping and calendar functions - Low power consumption for extended battery life - Easy integration with other devices through the I2C-BUS interface - Compact package size for space-constrained designs - Reliable and stable performance

Disadvantages: - Limited timekeeping accuracy compared to more advanced RTCs - Lack of advanced features found in higher-end RTCs

Working Principles

The RX-8581NB:B I2C-BUS operates based on an internal oscillator that generates a 32.768 kHz clock signal. This clock signal is used to keep track of time and perform various time-related functions. The IC communicates with other devices using the I2C-BUS interface, allowing for seamless integration into larger electronic systems.

Detailed Application Field Plans

The RX-8581NB:B I2C-BUS finds applications in various electronic devices that require accurate timekeeping and scheduling. Some common application fields include:

1. Consumer Electronics: Used in digital cameras, portable media players, and smartwatches for time synchronization and event scheduling.
2. Automotive: Integrated into car infotainment systems, dashboard clocks, and GPS devices to ensure accurate time display and data logging.
3. Industrial Automation: Employed in programmable logic controllers (PLCs), industrial timers, and data loggers for precise timing and event triggering.
4. Medical Devices: Utilized in medical equipment such as patient monitors, infusion pumps, and diagnostic instruments to maintain accurate timestamps and scheduling.

Detailed and Complete Alternative Models

1. RX-8571NB:B I2C-BUS: Similar to the RX-8581NB:B, but with enhanced timekeeping accuracy and additional features.
2. DS3231: A popular alternative from Maxim Integrated, offering high accuracy and temperature compensation.
3. PCF8563: An alternative from NXP Semiconductors, featuring low power consumption and I2C-BUS compatibility.

These alternative models provide similar functionality and can be considered based on specific requirements and preferences.

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