
16
μ
PD78074B, 78075B
Pin Name
Input/Output
I/O
Recommended Connection for Unused Pins
Circuit Type
P70/SI2/RxD
8-C
Input/output
Connect to V
DD0
or V
SS0
via a resistor individually.
P71/SO2/TxD
5-H
P72/SCK2/ASCK
8-C
P80/A0 to P87/A7
5-H
P90 to P93
13-J
Input/output
Connect to V
DD0
via a resistor individually.
P94 to P96
5-H
Input/output
Connect to V
DD0
or V
SS0
via a resistor individually.
P100/TI5/TO5
8-C
P101/TI6/TO6
P102, P103
5-H
P120/RTP0 to
P127/RTP7
P130/ANO0,
12-C
Input/output
Connect to V
SS0
via a resistor individually.
P131/ANO1
RESET
2
Input
—
XT2
16
—
Leave open.
AV
REF0
—
Connect to V
SS0
.
AV
REF1
Connect to V
DD0.
AV
SS
Connect to V
SS0
.
IC
Connect directly to V
SS0
.
Table 3-1. Types of Pin Input/Output Circuits (2/2)