The ConnectCore 6UL system-on-module contains an ultra-low power ARM Cortex-M0+ (NXP Kinetis KL03: MKL03Z32CAF4R) Micro Controller Assist chip. The MCA is connected to the i.MX6UL 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

    • Power button

    • 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 6UL product support page to check for the latest available MCA firmware version. See MCA management application for instructions about updating the MCA firmware.