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ISL12028IB27AZ-T
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ISL12028IB27AZ-T

Product Overview

Category

ISL12028IB27AZ-T belongs to the category of Real-Time Clocks (RTCs).

Use

It is primarily used for timekeeping and calendar functions in various electronic devices.

Characteristics

  • Low power consumption
  • High accuracy
  • Integrated oscillator
  • Non-volatile memory for data storage
  • I2C interface for communication

Package

ISL12028IB27AZ-T is available in a small surface-mount package, making it suitable for compact electronic devices.

Essence

The essence of ISL12028IB27AZ-T lies in its ability to provide accurate timekeeping and calendar functions with low power consumption.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

  • Supply Voltage: 1.8V to 5.5V
  • Timekeeping Accuracy: ±5ppm at 25°C
  • Operating Temperature Range: -40°C to +85°C
  • Memory Size: 256 bytes
  • I2C Bus Frequency: Up to 400kHz
  • Battery Backup Voltage: 1.3V to 5.5V

Detailed Pin Configuration

ISL12028IB27AZ-T has the following pin configuration:

  1. VCC - Power supply input
  2. GND - Ground
  3. SDA - Serial Data Line for I2C communication
  4. SCL - Serial Clock Line for I2C communication
  5. SQW/INT - Square Wave Output / Interrupt output
  6. VBAT - Battery backup input

Functional Features

  • Real-time clock with calendar functions
  • Alarm and timer functions
  • Automatic leap year compensation
  • Power-fail detection and switch circuitry
  • Programmable square wave output
  • 12/24-hour time format

Advantages and Disadvantages

Advantages

  • Low power consumption extends battery life
  • High accuracy ensures precise timekeeping
  • Integrated oscillator simplifies design
  • Non-volatile memory retains data during power loss
  • I2C interface allows easy integration with microcontrollers

Disadvantages

  • Limited memory size for data storage
  • Operating temperature range may not be suitable for extreme environments

Working Principles

ISL12028IB27AZ-T utilizes an integrated oscillator to generate accurate clock signals. It uses a combination of internal registers and non-volatile memory to store time, date, and alarm settings. The I2C interface enables communication with external microcontrollers or host systems.

During normal operation, the RTC keeps track of time and date, compensating for leap years automatically. In case of a power failure, the device switches to battery backup mode, ensuring uninterrupted timekeeping. The programmable square wave output can be used for various timing applications.

Detailed Application Field Plans

ISL12028IB27AZ-T finds applications in a wide range of electronic devices, including but not limited to:

  1. Smartwatches and fitness trackers
  2. Home automation systems
  3. Industrial control systems
  4. Medical equipment
  5. Automotive electronics
  6. Consumer electronics

Detailed and Complete Alternative Models

  1. DS3231 - Real-Time Clock Module with I2C Interface
  2. PCF8563 - Ultra-Low Power Real-Time Clock with I2C-Bus Interface
  3. MCP7940N - I2C Real-Time Clock/Calendar with SRAM

These alternative models offer similar functionalities and can be considered as alternatives to ISL12028IB27AZ-T.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de ISL12028IB27AZ-T en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of ISL12028IB27AZ-T in technical solutions:

  1. Q: What is ISL12028IB27AZ-T? A: ISL12028IB27AZ-T is a real-time clock (RTC) module with an integrated crystal oscillator, designed for accurate timekeeping in various technical applications.

  2. Q: What are the key features of ISL12028IB27AZ-T? A: Some key features include low power consumption, I2C interface, battery backup, alarm functionality, and a wide operating temperature range.

  3. Q: How does ISL12028IB27AZ-T connect to a microcontroller or system? A: ISL12028IB27AZ-T uses the I2C interface to communicate with the microcontroller or system, allowing for easy integration into existing designs.

  4. Q: Can ISL12028IB27AZ-T operate on battery power? A: Yes, ISL12028IB27AZ-T has a built-in battery backup feature that allows it to continue keeping time even when the main power source is disconnected.

  5. Q: What is the accuracy of ISL12028IB27AZ-T? A: ISL12028IB27AZ-T offers high accuracy timekeeping with typical deviations of only a few seconds per month.

  6. Q: Can ISL12028IB27AZ-T generate alarms or interrupts? A: Yes, ISL12028IB27AZ-T has programmable alarm functionality that can trigger interrupts or set an output pin high when a specific time condition is met.

  7. Q: Is ISL12028IB27AZ-T suitable for industrial applications? A: Yes, ISL12028IB27AZ-T is designed to operate reliably in industrial environments, with a wide temperature range of -40°C to +85°C.

  8. Q: Can ISL12028IB27AZ-T be used in battery-powered devices? A: Yes, ISL12028IB27AZ-T's low power consumption makes it suitable for use in battery-powered devices, helping to extend battery life.

  9. Q: Does ISL12028IB27AZ-T require external components for operation? A: No, ISL12028IB27AZ-T integrates a crystal oscillator and does not require any external components for basic timekeeping functionality.

  10. Q: Are there any development resources available for ISL12028IB27AZ-T? A: Yes, Intersil (now Renesas Electronics) provides datasheets, application notes, and evaluation boards that can help developers integrate ISL12028IB27AZ-T into their designs.

Please note that the answers provided here are general and may vary depending on specific requirements and use cases.