The ConnectCore 8M Nano system-on-module contains an ultra-low power ARM Cortex-M0+ (NXP Kinetis KL17: MKL17Z64VFM4) Micro Controller Assist chip. The MCA is connected to the i.MX8M Nano CPU through the I2C1 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

    • Keypad

    • LED controller

    • 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 8M Nano product support page 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: