Motorola MCU 68HC912 Manual do Utilizador descarregar pdf (Página 44)

UPA-USB Device Programmer44

Check for shorted pins by an ohm meter

Plug the 912D60/DG128 test board in the 78K0/HC912 adapter ( J1 24 pins connector )

Look out for PIN1!

Plug the 78K0/HC912 Adapter in the UUSP - (DB9 Male Connector)

Connect the PC USB cable to the UUSP

Run UPA-USB Device Programmer Software and select a MCU - MC68HC912D60(A),

MC68HC912DG128(A) or MC68HC912DC128A

Select a 4MHz Oscillator frequency (The 78K0/HC912 adapter use a 4MHz quartz)

Push the Read button, look at the red LED on the Adapter - It have to blink during reading (also during

all other actions)

Blinking LED means that the MCU executes the code programmed in the external flash memory.

If in the future you'd like to access the MCU by BDM in circuit, push Disable BDM Lockout button. This

will set NOBDM bit to 1 (Shadow word)

Note:

It's possible the original software (in the MCU internal flash) to enable BDM Lockout again after

soldering of the MCU back on the target board.

Such MCU can be read/program by BDM Lockout Adapter only

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Motorola MCU 68HC912 Manual do Utilizador Página 44