Whether BKGD signal pin On S08 and S12 series MCU need to add pull resistance?
In the S08 case there is not necessary a pull up resistor on the BKGD pin, regarding to the S12 I believe also is not necessary but I am not expert on S12, you can ask on the S12 community
I see！Thanks for answer！
By the way.I can't program flash.
After identifying,BKGD pin was pulled low.
What causes the BKGD pins to be pulled low?
maybe the pin is set as a GPIO, please check if you can the BKGDPE = 1
If a debug system is connected to the 6-pin standard background debug header, it can hold BKGD/MS low during a POR or immediately after issuing a background debug force reset, which forces the MCU to active background mode.
Please also check the signal on the reset pin.
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