All-In-One Devices Engineered to Outperform Discrete Components

ECS Inc. is a recognized industry leader in frequency control and power management products, one of which is the real time clock (RTC). A real time clock is a digital clock whose main function is to keep accurate track of time, even if the power to the device is cut off or it enters low-power mode. RTCs are comprised of a controller, oscillator and an embedded quartz crystal resonator. These all-in-one devices are engineered to outperform discrete components, simplify integration in new designs and accelerate time to market.

Our real time clocks come in voltage ranges of +1.6 to 5.0 V in a 3.2 mm x 3.2 mm x 1.0 mm package size with an embedded 32.768 kHz TCXO.The RTCs listed have a current consumption as low as 0.5μA (Typ.) and frequency stability options as tight as ±3 PPM. Learn more about our real time clocks by reading our technical guide called, “What Is a Real Time Clock?” Find the real time clock that best suits your application below.

Real Time Clocks (RTC) was last modified: December 7th, 2023 by iFocus Marketing
Support DocsPackage SizeSupply
ECS-RTC-SOP8-5101AECS-RTC-SOP8-5101A Datasheet
Support Docs
4.9mm x 6.0mm+1.2V ~ 5.6VExternal Crystal Required-40°C ~ 85°C
ECS-RTC-3225-5699HSECS-RTC-3225-5699HS Datasheet
Support Docs
3.2mm x 2.5mm+2.5V ~ 5.0V32.768 kHz±5ppm-40°C ~ 85°C
ECS-RTC-3225-5699C3ECS-RTC-3225-5699C3 Datasheet
Support Docs
3.2mm x 2.5mm+2.5V ~ 5.0V32.768 kHz±3ppm-40°C ~ 85°C
ECS-RTC-3225-5609ECS-RTC-3225-5609 Datasheet
Support Docs
3.2mm x 2.5mm+2.5V ~ 5.0V32.768 kHz±5ppm-20°C ~ 70°C

Applications for RTCs

Real time clocks are ideal for applications such as:

  • Internet of Things (IoT), such as GPS systems and smart home technology
  • Wearable technologies, such as smartwatches
  • Consumer products
  • Automotive electronics
  • Medical product applications
  • And more

Real Time Clocks and Other Clocks & Timing Resources

Get in touch with a sales representative if you need more information about programmable oscillators or have questions about a specific requirement in your application design. Contact the ECS engineering team at for assistance with products, board respins and any additional questions. Browse the extensive online resource library, complete with videos and other content about each of our products and their applications.

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