FRDM-KEAZ64Q64

This NXP Freedom board is based on the S9KEAZ64AMLH which is a 48MHz device from the ultra-reliable EA automotive microcontroller family with Cortex-M0+ core. This KEA64 device has 64k Flash and 4k SRAM and is in a 64 pin LQFP package, whereby the KEA64 is also available also in 32 pin LQFP and its memory ranges from 32k..64k Flash and 2k..4k SRAM. There is an 8MHz crystal on the board for clocking the part.

Full details and documentation for this board can be obtained from the NXP web site: FRDM-KEAZ64Q64

To configure the µTasker project for this board simply enable the define FRDM_KEAZ64Q64 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_64_4.ld should be selected [KEA_64_4_BM.ld for downloadable version] {the linker script extension may vary for different compilers, whereby *.ld is valid for GCC}

FRDM-KEAZ64Q64 Binaries

Here are some binary files that can be loaded to the board. These were built using the µTasker applications (serial loader and 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 :

  • uTaskerSerialBoot_FRDM-KEAZ64Q64_KBOOT_UART.bin KBOOT compatible UART loader [6.79k] allowing applications to be loaded at link address 0x8000. When operating, the green LED blinks at 5Hz. To force the loader reset the board with the push button SW2 held down. To disable the watchdog reset the board with the push button SW3 held down. This can be loaded using the FRDM-KEAZ64Q64's USB-MSD (OpenSDA) boot loader. Note that the loader limits application sizes to 28k - it can be built without limits using the µTasker project.
  • uTaskerV1.4.12_BM_FRDM-KEAZ64Q64_8000.bin KEA64 application with command-line menu on the virtual COM connection (at 115.2kBaud). Low power modes can be set in the application menu and the processor runs at 40MHz [20.4k]. Linked to 0x8000, it can be loaded using the KBOOT PC tool. When the application is running the green LED blinks at 2.5Hz.
  • uTaskerV1.4.12_FRDM-KEAZ64Q64.bin The same KEA64 application as stand-alone software that can be loaded using the FRDM-KEAZ64Q64's USB-MSD boot loader [21.4k].


  • uTaskerSerialBoot_FRDM-KEAZ64Q64_SREC_UART_38400.bin SREC UART loader [8.0k] allowing applications to be loaded at link address 0x8000. When operating, the green LED blinks at 5Hz. To force the loader reset the board with the push button SW2 held down. To disable the watchdog reset the board with the push button SW3 held down. The Baud rate of the UART (on the OpenSDA virtual COM port connection) is 38.4k. This can be loaded using the FRDM-KEAZ64Q64's USB-MSD (OpenSDA) boot loader. Note that the loader limits application sizes to 28k - it can be built without limits using the µTasker project.
  • uTaskerV1.4.12_BM_FRDM-KEAZ64Q64_8000.SREC KEA64 application with command-line menu on the virtual COM connection (at 115.2kBaud) [56.1k]. Linked to 0x8000, it can be loaded using the SREC loader. When the application is running the green LED blinks at 2.5Hz.


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µTasker FRDM-KEAZ64Q64 support. Copyright (c) 2004..2016 M.J.Butcher Consulting