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The ECS-RTC-3225-5699HS is a small form factor real time clock (RTC) with low power consumption and an embedded 32.768 kHz TCXO.

The ECS-RTC-3225-5699HS is an I2C bus interface real time clock (RTC) with low power consumption and an embedded 32.768 kHz TCXO. The precise temperature sensor and temperature compensated circuit ensure clock accuracy. The RTC supports calendar, clocking, and timer functions, including leap year compensation. The 3.2 mm x 2.5 mm x 1.0 mm package makes it suitable to be used in portable, battery-powered, and small size electronic devices.

View the real time clock application note here.


  • 3.2 x 2.5 x 1.0 mm footprint
  • Built-in 32.768 kHz TCXO
  • Power Supply Voltage: 1.6 ~ 5.0V
  • Low Current Consumption: 0.5 uA (Typ.)


  • Operation Temperature Range: -40°C to +85°C
  • High Stability
  • Automatic backup power switchover function
  • Timer output function with adjustable period


  • Computers
  • Servers
  • Embedded Systems


  • IoT
  • Ultra-Low Power
  • Digital Clocks
Image Part Number Frequency Voltage Operating
Datasheet Check
RTC ecs inc ECS-RTC-3225-5699HS 32.768 kHz +2.5 ~ 5.0V
-40°C ~ +85°C Datasheet Inventory

Please contact us if you need additional information or have a specific requirement in your application.

ECS, Inc. International
15351 West 109th Street
Lenexa, KS 66219

Tel: 913-782-7787
Toll Free: 1-800-237-1041
Fax: 913-782-6991


About ECS

Founded in 1980, ECS Inc. International has grown to become one of the most recognized and experienced manufacturers of frequency control management products in the world.
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15351 West 109th Street, Lenexa, KS 66219
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