µPD784214A, 784215A, 784216A, 784217A, 784218A, 784214AY, 784215AY, 784216AY, 784217AY, 784218AY
Table 5-1. Types of Pin Input/Output Circuits and Recommended Connection of Unused Pins (2/2)
Pin Name
RESET
XT1
XT2
AVREF0
AVREF1
AVDD
AVSS
TEST
I/O Circuit Type
2-G
16
−
I/O
Input
−
Recommended Connection of Unused Pins
−
Connect to VSS
Leave open
Connect to VSS
Connect to VDD
Connect to VSS
Connect this pin to VSS directly or via a pull-down resistor.
For the pull-down connection, it is recommended to use a resistor
with a resistance ranging from 470 Ω to 10 kΩ.
Remark Because the circuit type numbers are standardized among the 78K Series products, they are not
sequential in some models (i.e., some circuits are not provided).
Data Sheet U14121EJ2V0DS00
19