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37
CHAPTER 2 PIN FUNCTION
2.2.20 V
PP
(
µ
PD78F0974)
A high voltage should be applied to this pin when the flash memory programming mode is set and when the program
is written or verified. Directly connect this pin to V
SS
in the normal operating mode.
2.2.21 IC (
µ
PD780973(A))
The IC (Internally Connected) pin is provided to set the test mode to check the
µ
PD780973(A) before shipment.
In the normal operating mode, directly connect this pin to the V
SS
pin with as short a wiring length as possible.
When a potential difference is generated between the IC pin and V
SS
pin because the wiring between those two
pins is too long or external noise is input to the IC pin, the user's program may not run normally.
• Directly connect the IC pin to the V
SS
pin.
Keep short
IC
V
SS
Содержание mPD780973 Series
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