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Real Time Clocks

What are Real Time Clocks?

A Real Time Clock, abbreviated as RTC, is a computer clock that is an electrical component designed to work as an integrated circuit. These devices are manufactured in an innovative way to keep track of time. In particular, they are designed to be used with streaming or real-time data. Therefore, the names are given. The computer's motherboard has an integrated real-time clock that keeps track of all the related things, as the calendar and alarm are also incorporated into this category. 

How do Real-Time Clocks function?

The memory is fixed on top of the clock system that stores system routine activities and descriptions and configures the values, such as the current time value. The information that is embedded in the Real-time clocks is defined by a microprocessor, which is commonly distributed over a serial interface that supports the reliability and performance of the software that is based on time. RTCs frequently run on a lithium battery supply but can also function on regular power because they are made to operate with extremely low power consumption. 

When a system is down, it can still operate and produce real-time data thanks to this power source. The power source for the most recent RTC devices is a rechargeable super-capacitor that is soldered to the board. Real-Time Clocks with synchronization to an external signal, like a power line frequency that has been compensated, are available. It enables the tool to deliver a precise result without an internal temperature correction system.

RTC Time Values

  • Seconds
  • Minutes
  • Hours
  • Date
  • Month
  • Year

What are the applications of real-time clocks?

These devices are available on any kind of electronic equipment that needs to keep track of accurate time in the application or system. This function is very reliable and secure even when the system is powered off, still maintains accurate time, and has the potential to store sufficient energy to be used even if the power is not connected for a long time. Real-time clocks are typically embedded in:

  • Personal Computers
  • Embedded systems, and 
  • Servers.

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Maxim Integrated
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DS1339AU+, Maxim Integrated
4644 In Stock
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£ 1.79
STMicroelectronics
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M41T80M6F, STMicroelectronics
6179 In Stock
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M48T12-150PC1, STMicroelectronics
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Micro Crystal
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RV-3049-C2-TB-008, Micro Crystal
116 In Stock
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MCP7940M-I/SN, Microchip
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MCP79521-I/MS, Microchip
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M48T18-150PC1, STMicroelectronics
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DS1050Z-001+, Maxim Integrated
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M41ST87WSS6F, STMicroelectronics
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PCF85063TP/1Z, NXP
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MCP79400-I/MS, Microchip
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ISL1219IUZ, Renesas Electronics
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M41T82RM6F, STMicroelectronics
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M48T18-100PC1, STMicroelectronics
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New Items
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DS1337+, Maxim Integrated

DS1337+, Maxim Integrated

IC RTC CLK/CALENDAR I2C 8-DIP
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ISL12020MIRZ, Renesas Electronics America Inc
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DS1305E+, Maxim Integrated

DS1305E+, Maxim Integrated

Real Time Clock with NV Memory, Integrated A range of real-time clock products from Maxim incorporating non-volatile RAM memory for data retention. The clock/calendar functions provide seconds, minutes, hours, day, date, month, and year information. The clocks generally operate in either the 12 or 24-hour format with an AM/PM indicator. Additional features may include watchdog timers, alarms and trickle-charging facilities for external back-up batteries; some devices are available which include an integrated crystal for the clock oscillator. Note Please note that any defect or non – conformance of this product must be discovered and reported to RS within 20 days of purchase.
New items
DS1682S+T&R, Maxim Integrated

DS1682S+T&R, Maxim Integrated

IC RTC ELAPSED CNT I2C 8-SOIC
New items
DS2417P+, Maxim Integrated

DS2417P+, Maxim Integrated

Real Time Clock ICs, Maxim Integrated Note Please note that any defect or non – conformance of this product must be discovered and reported to RS within 20 days of purchase.
New items
DS17287-5+, Maxim Integrated

DS17287-5+, Maxim Integrated

IC RTC CLK/CALENDAR PAR 24-EDIP
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MCP795W20-I/ST, Microchip Technology
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DP8573AV, National Semiconductor

DP8573AV, National Semiconductor

REAL TIME CLOCK, VOLATILE, 0 TIM
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DS1302+, Maxim Integrated

DS1302+, Maxim Integrated

IC RTC CLK/CALENDAR SER 8-DIP
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MCP79520T-I/MS, Microchip Technology
New items
ISL1208IU8, Intersil

ISL1208IU8, Intersil

IC RTC CLK/CALENDAR I2C 8-MSOP
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