Andy,
Are you sure you are not confusing /PSEN (output, to be connected to code memory output enable pin), with /EA (input, determining whether external or internal code memory is to be used)?
/PSEN should be left floating.
Jan Waclawek
Are you sure you are not confusing /PSEN (output, to be connected to code memory output enable pin), with /EA (input, determining whether external or internal code memory is to be used)?
/PSEN should be left floating.
Jan Waclawek