ISL12022MIBZ

Interface:	I²C, 2-Wire Serial
Base Part Number:	ISL12022
Supplier Device Package:	20-SOIC
Package / Case:	20-SOIC (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Current - Timekeeping (Max):	14µA ~ 15µA @ 3V ~ 5V
Voltage - Supply, Battery:	1.8 V ~ 5.5 V
Voltage - Supply:	2.7 V ~ 5.5 V
Series:	--
Date Format:	YY-MM-DD-dd
Time Format:	HH:MM:SS (12/24 hr)
Memory Size:	128B
Features:	Alarm, Daylight Savings, Leap Year, SRAM
Type:	Clock/Calendar
Part Status:	Active
Packaging:	Tube

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The ISL12022MIBZ is a Real Time Clock (RTC) that is a highly accurate and low power clock circuit, providing an interface to an external 32.768kHz quartz crystal oscillator. It is primarily used to provide timekeeping functionality when other power sources such as AC or DC power are NOT available.The ISL12022MIBZ has a wide application field and can be found in products ranging from home appliances and consumer electronics to critical communication systems, medical equipment and process control applications.The ISL12022MIBZ can keep accurate time even when the power supply is intermittent or when the system is powered off for long periods of time.
Specifically, the ISL12022MIBZ has application areas in the following fields:

• Automotive: RTCs are implemented in many automotive systems including in-vehicle network systems, navigation systems, multimedia systems, wireless communication systems, and many other embedded systems.


• Telecommunications: RTCs are used in critical communication systems for keeping track of time, date and other important information in settings such as aircraft and other mission-critical operations.


• Industrial: RTCs are used in industrial settings such as factory automation and process control systems. This includes robotic systems and other time-critical operations.


• Medical: RTCs are also employed in medical settings, providing reliable timekeeping for monitoring and reporting patient vital signs, as well as other important information.


• Consumer Electronics: RTCs are widely used in consumer electronics, including in televisions, radios, and many other home appliance products.

The ISL12022MIBZ\'s low power operation and high accuracy make it an ideal choice for applications that require precise timekeeping and reliability.

Working Principle

The ISL12022MIBZ provides a sophisticated RC oscillator circuit, integrated crystal oscillator, oscillator output control, and clock function control functions. The ISL12022MIBZ also provides previously implemented synthesized adjustable clock frequencies necessary for applications such as switching frequency control and overload protection.The ISL12022MIBZ includes an onboard microprocessor and a battery backup system ensuring that the clock is continuously accurate, even when the system is powered off for extended periods of time.The ISL12022MIBZ is designed using one of two different implementation methods. The first implementation method uses the external quartz crystal oscillator to generate the clock frequency and the microcontroller to control the oscillator output. The second implementation method uses a fully integrated crystal oscillator for clock generation.The output of the oscillator can be controlled using control pins. The external crystal oscillator can be used to drive a low-speed frequency clock to control the oscillator, or a high-speed frequency can be used to drive a high-speed frequency clock.The ISL12022MIBZ also provides an interface to an external 32.768kHz quartz crystal oscillator. This external quartz oscillator allows the RTC to maintain its accuracy even in extreme conditions, such as low-power mode or when the system is powered down for long periods of time.The ISL12022MIBZ includes a wide range of features including a low-battery detector, programmable interrupts, adjustable clock frequencies, selectable output pins, and an integrated Digital Time-Keeping Circuit. All of these features contribute to the ISL12022MIBZ\'s high accuracy and reliable operation.The ISL12022MIBZ is also programmable and provides a variety of options for the user, such as setting the time, date and alarm settings. This allows for more flexibility when using the RTC in various applications.
In summary, the ISL12022MIBZ is a highly accurate and low-power clock circuit with a wide application field. It is ideal for use in systems that require precise timekeeping and reliability, including automotive, telecommunications, industrial and medical applications. The sophisticated RC oscillator circuit, integrated crystal oscillator, oscillator output control, clock function control, low-battery detector, programmable interrupts, adjustable clock frequencies, selectable output pins, and integrated Digital Time-Keeping Circuit, make the ISL12022MIBZ an ideal choice for a wide range of applications.

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