unused pins in ADUC842/ADUC843

so I cant leave them floating.
if mains powered, write a '0' to them and they will be 'shorted' to ground
if you absolutotally have to do something externally, verify that your derivative does the standard 'reset state' of the pins, stay away from those pins in your code and tie them directly to Vcc.
if you are 'afraid' of the above tie them through a resistor to Vcc.

anyhow, what does this have to do with Keil siftware, for '51 hardware 8052.com is the place

Erik

so I cant leave them floating.
if mains powered, write a '0' to them and they will be 'shorted' to ground
if you absolutotally have to do something externally, verify that your derivative does the standard 'reset state' of the pins, stay away from those pins in your code and tie them directly to Vcc.
if you are 'afraid' of the above tie them through a resistor to Vcc.

anyhow, what does this have to do with Keil siftware, for '51 hardware 8052.com is the place

Erik

I do not know the ADUC and thus
if mains powered, write a '0' to them and they will be 'shorted' to ground and, if your derivative has configurable ports, configure them as input/open drain/quasi bi-directional.

if you absolutotally have to do something externally, verify that your derivative does the standard 'reset state' of the pins quasi bi-directional and '1', stay away from those pins in your code and tie them directly to Vcc.

if you are 'afraid' of the above and the conditions are as above tie them through a resistor to Vcc.

Erik