ISL12028IBZ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

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

Characteristics: - Low-power RTC with battery backup - I2C interface for communication - Programmable alarm and timer functions - Wide operating voltage range - Small package size

Package: 8-pin SOIC (Small Outline Integrated Circuit)

Essence: The ISL12028IBZ is a low-power real-time clock IC designed for applications that require accurate timekeeping. It provides a reliable time base for various electronic devices.

Packaging/Quantity: The ISL12028IBZ is available in a standard 8-pin SOIC package. It is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Timekeeping Current: 200nA (typical)
• Operating Temperature Range: -40°C to +85°C
• I2C Bus Frequency: Up to 400kHz
• Alarm and Timer Functions: Programmable
• Battery Backup Voltage Range: 1.3V to 5.5V

Pin Configuration

The ISL12028IBZ has the following pin configuration:

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| | | 1 8 | | | | 2 7 | | | | 3 6 | | | | 4 5 | |___________| ```

Pin Description: 1. VCC - Power supply input 2. SDA - I2C data line 3. SCL - I2C clock line 4. GND - Ground 5. ALM - Alarm output 6. VBAT - Battery backup input 7. SQW/INT - Square wave output / Interrupt output 8. NC - No connection

Functional Features

1. Accurate Timekeeping: The ISL12028IBZ provides precise timekeeping with low power consumption, making it suitable for battery-powered devices.
2. I2C Interface: It utilizes the I2C communication protocol for easy integration into various systems.
3. Programmable Alarm and Timer Functions: Users can set alarms and timers based on their specific requirements.
4. Wide Operating Voltage Range: The IC can operate within a wide voltage range, allowing flexibility in different applications.
5. Small Package Size: The compact 8-pin SOIC package enables space-saving designs.

Advantages and Disadvantages

Advantages: - Low-power consumption - Accurate timekeeping - Programmable alarm and timer functions - Wide operating voltage range - Compact package size

Disadvantages: - Limited number of pins for additional functionalities - Requires an external battery for backup

Working Principles

The ISL12028IBZ operates by utilizing an internal oscillator to keep track of time. It communicates with the host system through the I2C interface, allowing the system to read and write time-related data. The IC also features a battery backup input (VBAT) to ensure continuous timekeeping during power loss.

Detailed Application Field Plans

The ISL12028IBZ is commonly used in various applications, including but not limited to: - Consumer electronics (e.g., digital cameras, portable media players) - Home automation systems - Industrial control systems - Medical devices - Automotive electronics

Detailed and Complete Alternative Models

1. DS1307 - Real-Time Clock IC with I2C interface
2. PCF8563 - Low-power Real-Time Clock IC with I2C interface
3. MCP7940N - Real-Time Clock IC with battery backup and I2C interface

These alternative models offer similar functionalities to the ISL12028IBZ and can be considered as alternatives based on specific requirements.

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