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ECS-RTC-3225-5699C3 Tight Stability RTC

The ECS-RTC-3225-5699C3 is a small form factor real time clock (RTC) with an embedded 32.768kHz TCXO at ±3 ppm stability.

The ECS-RTC-3225-5699C3 is an I2C bus interface real time clock (RTC) with an embedded 32.768 kHz TCXO with low power consumption. The precise temperature sensor and temperature compensated circuit ensure clock accuracy. The RTC supports calendar, clocking, VBAT and timer functions. The ECS-RTC-3225-5699C3 is available in a 3.2 mm x 2.5 mm x 1.0 mm package size making it suitable for portable, battery-powered and small electronic devices where stability is critical. 

View the real time clock application note here.


  • 3.2 x 2.5 x 1.0 mm footprint
  • Built-in 32.768 kHz TCXO
  • ±3 ppm stability at -40ºC ~ +85ºC
  • Low current consumption: 1.0 uA (Typ.)
  • Power supply voltage: 2.5 V ~ 5.0 V


  • Automatic backup power switchover function
  • Extended temperature range available
  • Frequency Range: 2.5 V ~ 5.0 V
  • Temperature compensated frequency output


  • Computers
  • Servers
  • Embedded Systems


  • IoT
  • Ultra-Low Power
  • Digital Clocks
Image Part Number Frequency Voltage Operating
Datasheet Check
RTC ecs inc ECS-RTC-3225-5699C3 32.768 kHz +2.0 ~ 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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