µPD784031Y
Table 5-1. Types of Pin I/O Circuits and Connections for Unused Pins (2/2)
Pin Name
RESET
TEST
AVREF1 to AVREF3
AVSS
AVDD
I/O Circuit Type
2
1-A
–
I/O
Input
Recommended Connection for Unused Pins
–
Directly connect to VSS0.
Connect to VSS0.
Connect to VDD0.
Caution
Connect an I/O pin whose input/output mode is unstable to VDD0 via a resistor of several 10 kΩ
(especially if the voltage on the reset input pin rises higher than the low-level input level on power
application or when the mode is switched between input and output by software).
Remark Because the circuit type numbers shown in the above table are commonly used with all the models in the 78K
Series, these numbers of some models are not serial (because some circuits are not provided to some models).
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