This Freescale StarterTRAK board is based on the SKEAZN8MFK4 which is a 48MHz device from the ultra-reliable EA automotive microcontroller family with Cortex-M0+ core. This KEA8 device has 8k Flash and 1k SRAM and is in a 24 pin QFN package, whereby the KEA8 is also available also in 16 pin TSSOP with the same Flash and SRAM size. There is no crystal on the board so the part is clocked from an internal source.

Full details and documentation for this board can be obtained from the NXP web site: TRK-KEA8

To configure the µTasker project for this board simply enable the define TRK_KEA8 in the project's config.h file. The compiler needs to be set to build for Cortex m0+ (and not Cortex M4) and the linker script KEA_8_1.ld should be selected {the linker script extension may vary for different compilers, whereby *.ld is valid for GCC}

TRK-KEA8 Binaries

Here are some binary files that can be loaded to the board. These were built using the µTasker V1.4 application and can be simply generated using the supported compilers/IDEs [these were built using GCC], built using different configuration options or modified to suit specific requirements or hardware derived from this board :

  • uTaskerV1.4.12_TRK-KEA8.bin OS based application showing the KEA8 running at 48MHz and serial interface (6.23kBytes in size and using 965 bytes of SRAM). The serial interface displays a welcome message and echos back input. When a carriage return is sent it also displays the state of memory utilisation.
    Initially it makes use of the WAIT state whenever it can to save power. When Switch 1 is pressed a Keyboard interrupt is used to command a move to STOP mode (STOP is displayed on the debug output) so that further power can be saved. Futher presses move through RUN, WAIT and STOP modes again. The current consumption can be measured by removing R76 and measuring in the J17 path.
    For the serial interface to operate it may be necesary to add jumpers to J10 (1-3 and 2-4).
    To disable the watchdog, reset the board with the push button SW2 held down.
    This binary image can be loaded using the TRK-KEA8's USB-MSD (OpenSDA) boot loader.

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µTasker TRK-KEA8 support. Copyright (c) 2004..2017 M.J.Butcher Consulting