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2.3 Pin I/O Circuits and Recommended Connection of Unused Pins
Table 2-2 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.
Pin Name
P00/TI000
P01/TI010/TO00
Note
P02/SO11
Note
P03/SI11
Note
P04/SCK11
Note
Note
P05/SSI11
/TI001
Note
Note
P06/TI011
/TO01
P10/SCK10/TxD0
P11/SI10/RxD0
P12/SO10
P13/TxD6
P14/RxD6
P15/TOH0
P16/TOH1/INTP5
P17/TI50/TO50/FLMD1
P20/ANI0 to P27/ANI7
P30/INTP1
P31/INTP2
µ
(except
PD78F0138HD)
µ
P31/INTP2 (
PD78F0138HD)
P32/INTP3
P33/TI51/TO51/INTP4
P40 to P43
P50 to P53
P60, P61
P62, P63
P70/KR0 to P77/KR7
P120/INTP0
P130
P140/PCL/INTP6
P141/BUZ/INTP7
Note SO11, SI11, SCK11, SSI11, TI001, TI011, and TO01 are available only in the
78F0136H, 78F0138H, and 78F0138HD.
CHAPTER 2 PIN FUNCTIONS
Table 2-2. Pin I/O Circuit Types (1/2)
I/O Circuit Type
I/O
8-A
I/O
5-A
8-A
5-A
8-A
9-C
Input
8-A
I/O
5-A
13-R
13-W
8-A
3-C
Output
8-A
I/O
User's Manual U16899EJ2V0UD
Recommended Connection of Unused Pins
Input:
Independently connect to EV
Output: Leave open.
Connect to EV
or EV
.
DD
SS
Input:
Independently connect to EV
Output: Leave open.
Connect to EV
via a resistor.
SS
Input:
Independently connect to EV
Output: Leave open.
Input:
Connect to EV
.
SS
Output: Leave this pin open at low-level output after clearing
the output latch of the port to 0.
Input:
Independently connect to EV
Output: Leave open.
Leave open.
Input:
Independently connect to EV
Output: Leave open.
or EV
via a resistor.
DD
SS
or EV
via a resistor.
DD
SS
or EV
via a resistor.
DD
SS
or EV
via a resistor.
DD
SS
or EV
via a resistor.
DD
SS
µ
PD78F0133H, 78F0134H,
41
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