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2.3 Input/Output Circuits and Recommended Connection of Unused Pins
Table 2-1 shows the input/output circuit types of pins and the recommended connection for unused pins.
See Figure 2-1 for the configuration of the input/output circuit of each type.
Pin Name
Input/Output Circuit Type
P00/INTP0 to P02/INTP2
P03/SCK2
P04/SO2
P05/SI2
P06, P07
P10/ANI0 to P14/ANI4
P20/SM11 to P23/SM14
P24/SM21 to P27/SM24
P30/SM31 to P33/SM34
P34/SM41 to P37/SM44
P40/TI00 to P42/TI02
P43/TIO2
P44/TIO3
P50/SCK3
P51/SO3
P52/SI3
P53/RxD
P54/TxD
P60/PCL/TPO
P61/SGO
P81/S19 to P87/S13
P90/S12 to P97/S5
S0 to S4
COM0 to COM3
V
LCD
RESET
SMV
DD
SMV
SS
AV
REF
AV
SS
V
PP
IC
CHAPTER 2 PIN FUNCTION
Table 2-1. Pin Input/Output Circuit Types
Input/Output
8-A
Input/output
9
Input
4
Output
8
Input/output
5
8
5
17-G
17
Output
18
—
—
2
Input
—
—
Preliminary User's Manual U14581EJ3V0UM00
Recommended Connection of Unused Pins
Independently connect to V
SS0
Independently connect to V
DD0
Leave open.
Independently connect to V
DD0
Leave open.
—
Connect to V
.
DD0
Connect to V
.
SS0
Connect to V
.
DD0
Connect to V
.
SS0
Connect directly to V
or V
SS0
SS1
via a resistor.
or V
via a resistor.
SS0
or V
via a resistor.
SS0
.
43
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