ISL12028IV27AZ-T

Product Overview

Category: Integrated Circuit (IC)

Use: Real-Time Clock (RTC) with Battery Backup

Characteristics: - Low-power RTC - Accurate timekeeping - Battery backup for continuous operation - I2C interface for easy integration - Small form factor

Package: SOIC (Small Outline Integrated Circuit)

Essence: The ISL12028IV27AZ-T is a real-time clock IC designed to provide accurate timekeeping in various electronic devices. It offers low power consumption and can operate using a backup battery, ensuring uninterrupted timekeeping even during power outages.

Packaging/Quantity: The ISL12028IV27AZ-T is available in a SOIC package. The quantity per package may vary depending on the supplier.

Specifications

• Supply Voltage: 1.8V to 5.5V
• Timekeeping Accuracy: ±5ppm (parts per million)
• Operating Temperature Range: -40°C to +85°C
• I2C Bus Interface
• Battery Backup Voltage: 2.7V to 5.5V
• Battery Backup Current: 0.35μA (typical)

Detailed Pin Configuration

The ISL12028IV27AZ-T has a total of 8 pins. Here is the detailed 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. SQW/INTB: Square Wave Output / Interrupt Output
6. VBAT: Battery Backup Input
7. X1: Crystal Oscillator Input
8. X2: Crystal Oscillator Output

Functional Features

• Real-time clock with calendar functionality
• Battery backup for continuous operation during power loss
• Programmable alarm and interrupt functions
• Square wave output with selectable frequencies
• Automatic leap year compensation
• Power management features to minimize power consumption

Advantages and Disadvantages

Advantages: - Accurate timekeeping - Low power consumption - Small form factor - Easy integration with I2C interface - Battery backup ensures uninterrupted operation

Disadvantages: - Limited quantity of pins for additional functionalities - Requires an external crystal oscillator for clock accuracy

Working Principles

The ISL12028IV27AZ-T utilizes an internal oscillator and a real-time counter to keep track of time. It communicates with the host microcontroller through the I2C bus, allowing the microcontroller to read and set the time and date. The IC can operate using the main power supply or a backup battery, ensuring continuous timekeeping even when the main power is disconnected.

Detailed Application Field Plans

The ISL12028IV27AZ-T is commonly used in various electronic devices that require accurate timekeeping. Some potential application fields include:

1. Consumer Electronics: Used in digital clocks, watches, and home appliances with time-based functions.
2. Industrial Automation: Integrated into programmable logic controllers (PLCs) and industrial control systems for precise time synchronization.
3. Automotive: Incorporated into car dashboards, infotainment systems, and navigation devices.
4. Medical Devices: Utilized in medical equipment that requires accurate time tracking, such as patient monitors and infusion pumps.
5. Internet of Things (IoT): Integrated into IoT devices for time synchronization and data logging.

Detailed and Complete Alternative Models

1. DS3231 - Real-Time Clock IC with I2C interface and temperature compensation.
2. PCF8563 - Low-power RTC IC with I2C interface and alarm functionality.
3. MCP7940N - Real-Time Clock IC with I2C interface and battery backup.

These alternative models offer similar functionalities to the ISL12028IV27AZ-T and can be considered as alternatives based on specific requirements and preferences.

Word count: 498 words