CHAPTER 2 PIN FUNCTIONS
Preliminary User’s Manual U16315EJ1V0UD
43
2.3 Pin I/O Circuits and Recommended Connection of Unused Pins
Table 2-1 shows the types of pin I/O circuits and the recommended connections of unused pins.
Refer to
Figure 2-1
for the configuration of the I/O circuit of each type.
Table 2-1. Pin I/O Circuit Types
Pin Name
I/O Circuit Type
I/O
Recommended Connection of Unused Pins
P00/TI000
P01/TI010/TO00
P02
P03
P10/SCK10/TxD0
P11/SI10/RxD0
8-A
P12/SO10
P13/TxD6
5-A
P14/RxD6
8-A
P15/TOH0
5-A
P16/TOH1/INTP5
P17/TI50/TO50
8-A
I/O
Input:
Independently connect to EV
DD
or EV
SS
via a resistor.
Output: Leave open.
P20/ANI0 to P27/ANI7
9-C
Input
Connect to EV
DD
or EV
SS
.
P30/INTP1 to P32/INTP3
P33/TI51/TO51/INTP4
8-A
Input:
Independently connect to EV
DD
or EV
SS
via a resistor.
Output: Leave open.
P60, P61 (Mask ROM version)
13-S
P60, P61 (Flash memory version)
13-R
P62, P63 (Mask ROM version)
13-W
P62, P63 (Flash memory version)
13-V
Input:
Connect to EV
SS
.
Output: Leave open and keep this pin to low.
P70/KR0 to P77/KR7
P120/INTP0
8-A
I/O
Input:
Independently connect to EV
DD
or EV
SS
via a resistor.
Output: Leave open.
P130
3-C
Output
Leave open.
P140/PCL/INTP6
8-A
I/O
Input:
Independently connect to EV
DD
or EV
SS
via a resistor.
Output: Leave open.
RESET
2
−
XT1
Input
Connect directly to EV
DD
or V
DD
.
XT2
16
−
Leave open.
AV
REF
−
−
Connect directly to EV
DD
or V
DD
.
AV
SS
−
−
Connect directly to EV
SS
or V
SS
.
IC
V
PP
−
−
Connect directly to EV
SS
or V
SS
.