PD78F9232CS_15 datasheet(11/30 Pages) RENESAS

11 / 30 page

Preliminary Product Information U18550EJ2V0PM

µ PD78F9232CS, 78F9234CS

1.3

Pin I/O Circuits and Connection of Unused Pins

Table 1-1 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 1-1.

Table 1-1. Types of Pin I/O Circuits and Connection of Unused Pins

Pin Name

I/O Circuit Type

I/O

Recommended Connection of Unused Pin

P00 to P03

8-A

Input:

Independently connect to VDD or VSS via a resistor.

Output: Leave open.

P20/ANI0 to P23/ANI3

Input:

Independently connect to AVREF or VSS via a resistor.

Output: Leave open.

P30/TI000/INTP0

P31/TI010/TO00/INTP2

P32 and P33

8-A

I/O

Input:

Independently connect to VDD or VSS via a resistor.

Output: Leave open.

P34/RESET

Input

Connect to VDD via a resistor.

P40

P41/INTP3

P42/TOH1

P43/TxD6/INTP1

P44/RxD6

P45 to P47

P120

8-A

Input:

Independently connect to VDD or VSS via a resistor.

Output: Leave open.

P121/X1

P122/X2

16-B

Input:

Independently connect to VSS via a resistor.

Output: Leave open.

P123

8-A

I/O

Input:

Independently connect to VDD or VSS via a resistor.

Output: Leave open.

P130

3-C

Output

Leave open.

AVREF

−

Directly connect to VDD.

AVSS

−

Directly connect to VSS.

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