UPD78F9234MC-5A4-A Datasheet, PDF (28/419 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 2 PIN FUNCTIONS
2.3 Pin I/O Circuits and Connection of Unused Pins
Table 2-1 shows I/O circuit type of each pin and the connections of unused pins.
For the configuration of the I/O circuit of each type, refer to Figure 2-1.
Table 2-1. Types of Pin I/O Circuits and Connection of Unused Pins
Pin Name
P00 to P03
I/O Circuit Type
8-A
I/O
I/O
P20/ANI0 to P23/ANI3
11
P30/TI000/INTP0
P31/TI010/TO00/INTP2
P32 and P33
P34/RESET
P40
P41/INTP3
P42/TOH1
P43/TxD6/INTP1
P44/RxD6
P45 to P47
P120
P121/X1
P122/X2
P123
8-A
2
8-A
16-B
8-A
Input
I/O
P130
AVREF
AVSS
3-C
−
−
Output
Input
−
Recommended Connection of Unused Pin
Input: Independently connect to VDD or VSS via a resistor.
Output: Leave open.
Input: Independently connect to AVREF or VSS via a resistor.
Output: Leave open.
Input: Independently connect to VDD or VSS via a resistor.
Output: Leave open.
Connect to VDD via a resistor.
Input: Independently connect to VDD or VSS via a resistor.
Output: Leave open.
Input: Independently connect to VSS via a resistor.
Output: Leave open.
Input: Independently connect to VDD or VSS via a resistor.
Output: Leave open.
Leave open.
Connect directly to VDD.
Connect directly to VSS.
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User’s Manual U17446EJ5V0UD