51
CHAPTER 2 PIN FUNCTIONS
User’s Manual U15798EJ2V0UD
2.2.24 IC (mask ROM version only)
The IC (Internally Connected) pin is provided to set the test mode to check the
µ
PD780344, 780354, 780344Y,
780354Y Subseries at delivery. Connect it directly to the V
SS0
or
V
SS1
pin with the shortest possible wire in the normal
operation mode.
When a potential difference is produced between the IC pin and V
SS0
pin or V
SS1
pin because the wiring between
those two pins is too long or an external noise is input to the IC pin, the user’s program may not operate normally.
• Connect IC pins to V
SS0
pins or V
SS1
pins directly.
As short as possible
IC
V
SS0
or
V
SS1
Содержание mPD780344 Series
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