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2.3 Pin I/O Circuits and Recommended Connection of Unused Pins
The input/output circuit type of each pin and recommended connection of unused pins are shown in Table 2-1.
For the input/output circuit configuration of each type, refer to Figure 2-1.
Table 2-1. Types of Pin I/O Circuits and Recommended Connection of Unused Pins (1/2)
Pin Name
I/O Circuit Type
P00/INTP0
8-K
P01/INTP1
P02/INTP2/NMI
P03/INTP3 to P05/INTP5
P10/ANI0 to P17/ANI7
9
P20/RxD1/SI1
10-I
P21/TxD1/SO1
10-J
P22/ASCK1/SCK1
10-I
P23/PCL
10-J
P24/BUZ
Note
P25/SDA0
/SI0
10-I
P26/SO0
10-J
Note
P27/SCL0
/SCK0
10-I
P30/TO0 to P32/TO2
8-M
P33/TI1, P34/TI2
8-K
P35/TI00, P36/TI01
8-L
P37/EXA
8-M
P40/AD0 to P47/AD7
5-H
P50/A8 to P57/A15
P60/A16 to P63/A19
P64/RD
P65/WR
P66/WAIT
P67/ASTB
P70/RxD2/SI2
8-K
P71/TxD2/SO2
8-L
P72/ASCK2/SCK2
8-K
Note The SDA0 and SCL0 pins are provided only for the µ PD784225Y Subseries.
CHAPTER 2 PIN FUNCTIONS
I/O
Recommended Connection of Unused Pins
I/O
Input:
Independently connect to V
Output: Leave open.
Input
Connect to V
SS0
I/O
Input:
Independently connect to V
Output: Leave open.
User's Manual U12697EJ3V0UM
via a resistor.
SS0
or V
.
DD0
via a resistor.
SS0
53
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