Fixture: CMC Interface Board for STM iNEMO Sensor Module (SPI Extension)

Fixture: CMC Interface Board for STM iNEMO Sensor Module (SPI Extension)
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The CMC interface is composed of four components:

  • CMC interface board PCB
  • Connection cable to connect to STM iNEMO
  • Jumpers
  • Battery holder (2xAA) to solder in for DC/DC conversion

The CMC interface board is used to expand the connectivity of the STM iNEMO platform. There is also an embedded software library available for the CMC interface board, which allows a quicker start to integrate a sensor in an embedded software.


The barrier for sensor integration is lowered by providing an interface device between your sensor and iNEMO. The benefits of iNEMO with its processing capability and onboard sensors can be used for field testing a new sensor.


  • Analog-to-digital (A/D) conversion:
    • 16-bit
    • 4-channels (full scale or differential use)
    • Analog input voltage range from -0.3 V up to 3.6 V
    • Up to 860 samples per second (SPS)
    • Programmable gain amplifier (PGA)
  • General purpose input/output (GPIO) expansion:
    • 16 general purpose I/Os
    • I/O operating voltage from 1.65 V to 3.6 V (integrated level shifter)
    • Interrupt capable
  • Direct-to-direct current (DC/DC) voltage conversion:
    • Output voltage up to 25 V / 25 mA (maximum 1 W)
    • Input voltage range from 1.4 V to 5.5 V

Licensing Requirements or Restrictions

All CMC Microsystem account holders from a member university with a Prototyping or Designer Subscription are authorized to access this technology. Contact our Licensing Administrator at 613-530-4787 or

Acknowledging CMC

If your research benefits from products and services provided by CMC Microsystems, please acknowledge this support in any publications about your work. For more information, please visit Acknowledge CMC.