72CHAPTER 3 PIN FUNCTION (μPD78058F SUBSERIES)3.2.21 IC (Mask ROM version only)The IC (Internally Connected) pin is provided to set the test mode to check theμPD78058F Subseries at delivery.Connect it directly to the V SS with the shortest possible wire in the normal operating mode.When a voltage difference is produced between the IC pin and V SS pin because the wiring between those two pinsis too long or an external noise is input to the IC pin, the user's program may not run normally.Connect IC pins to V SS pins directly.VSS ICAs short as possible
