The ConnectCore 8X system-on-module contains an ultra-low power ARM Cortex-M0+ (NXP Kinetis KL17: MKL17Z64VDA4) Micro Controller Assist chip. The MCA is connected to the i.MX8QXP CPU through the I2C0 port.

The MCA provides the following functionality through a multi-function device driver (MFD):

  • Core functionality

    • System-on-module reset logic

    • NVRAM

    • 32.768 kHz output

    • 1.2 V voltage reference

  • Multi-function drivers

    • ADC channels

    • GPIOs

    • Power button

    • Pulse Width Modulation (PWM)

    • Real time clock (RTC)

    • UART

    • Watchdog timer

Digi recommends you verify the current firmware version of the MCA and check for a more recent version on the Digi support site.

Go to the ConnectCore 8X software product page on the Digi web site to check for the latest available MCA firmware version. See MCA management application for instructions about updating the MCA firmware.

Functionality

See the following topics for more information on the MCA functionality: