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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